While we may think that installing photovoltaic solar panels is expensive, they are actually quite affordable. The cost has come down considerably as the demand for alternative energy sources has increased. Today, they cost half as much as they did in 2008 and the solar market has increased substantially.
When solar panels are fitted onto the roof, they are positioned in such a way as to maximise the harvesting of solar energy. Throughout the day, this photovoltaic system will harvest as much solar power as is needed for the home. Anything over and above what is used will be stored in batteries. These batteries, if full, are able to supply the home’s power needs for approximately one whole day.
The sun will run your home’s power while it is shining. But any excess power will be stored. This allows your home to continue running off the grid at night or during thick cloud cover.
As a failover mechanism, the home isn’t physically taken off the grid, and instead the home’s photovoltaic off-the-grid system is tied into the utility electrical grid.
It’s the ultimate dream for every homeowner—being able to produce enough electricity to run your home without ever relying on the grid. The benefits to homeowners are twofold. First, it can significantly reduce your monthly electricity bill. Second, you’ll never be without power. Even if the grid goes down, your appliances and lights will carry on working.
Existing homes can also be retro-fitted with a photo-voltaic system, although this may incur some additional costs. We’ll look at what’s involved, how the system works and what costs and saving you can expect from using such solar power.
What is a photo-voltaic system?
Essentially, photo-voltaic means harnessing the power of the sun and converting it into electricity that can be used to power your home. The system can be independent or work in conjunction with your existing electricity supply. It consists of the following components:
- Solar panels
- An inverter (which converts direct current (DC) power from the solar panels into alternating current (AC) for powering appliances
- Batteries to store electricity which is not used immediately (these are for when the sun isn’t shining)
While there are currently no incentives offered to homeowners who install such a system, this may change in the future. And it may be possible that local councils will purchase electricity back from homeowners as more people install these systems in their homes. In other words, installing a photo-voltaic system in your home will not just save you money, but earn you money too.
What do you need and how does it work?
These are the main components of any photo-voltaic system:
- Solar panels
The solar panels are made up of a series of cells that convert the power of the sun into electricity you can use in your home. They are often installed on the roof where they can capture the most sunlight during daylight hours. They are made from semi-conductor materials such as silicon. When light strikes the surface of the panel, the energy penetrates the cells and dislodges electrons from the material’s surface. Chemicals added to the surface of the panel help to create a path for the electrons to travel down. And this is what creates an electrical current.
- DC-AC inverter: This device converts the electrical current into one that can be used to power the appliances in your home.
- Solar storage batteries: Considering our sunny climate it is possible to generate more electricity than you need during the day. In this case, batteries can be used to store the excess electricity generated, ensuring that you have an uninterrupted and constant supply of power whenever you need it.
- Charge controller/regulator: These prevent excessive discharge or overcharging which may damage the storage battery.
The system is a simple but effective way on powering your home for free. But there are two different systems, each with its own advantages and disadvantages.
Types of Solar Power Systems
Either of these systems is suitable for the home or office. Which one you chose will depend on your needs. They are:
The stand-alone solar power system
This system only consists of two components: the solar panels and the DC/AC converter. It’s a popular choice for powering ventilation fans, water pumps and with small circulation pumps with solar water heating systems.
Because it doesn’t include batteries, there is no way to store the power generated for use when there is no direct sunlight. So it’s worth considering adding batteries to your solar panel that will allow you to store energy for use during periods of insufficient sunlight.
The grid-connected hybrid power system
This kind of system works hand-in-hand with your regular supply of grid power. Because the inverter changes the current of the photo-voltaic solar panels from DC to AC, the electricity is consistent with the voltage and power quality requirements of the grid. Therefore the self-generated electricity is automatically either supplied to the home, the batteries or the grid.
When it generates more electricity than the home needs, and the batteries are fully loaded, the system feeds power back into the grid. It also means that you will still have a supply of power, from the batteries to your home when your panels aren’t producing power due to lack of sunlight, or if it has been disabled to carry out repairs or is being serviced, in which case it either draws power from the batteries or the grid; based on the lower threshold of the batteries, or which part of the system is being repaired or serviced.
The automation ensures optimal use of the self-generated and grid electricity of the hybrid system.
Determining the size of the system you require
A photo-voltaic system can be pricey, but it doesn’t have to break your budget. The first step in determining whether the long term savings it offers are worth it, is to figure out how much energy you need to run your home comfortably. This is how you should go about it:
- Make a list of all the electrical appliances you use, how many watts they need to work and how many hours you use them every day.
- Now multiply the number of watts by hours of use to get the total needed for each appliance.
- Add these figures together and you’ll have the total number of watts your system needs to generate on a daily basis.
- Work out how many hours of daylight you get every day.
- Finally, divide the total watts you require by the number of daylight hours and you’ll have a figure that indicates how many watts your system needs to produce on a daily basis.
Let’s use your TV as an example. Say you watch about 2 hours of TV every evening, and it uses about 14 Watts, multiply that by 2 and you end up with 28 Watts to run your TV. You’ll need to do this calculation for every appliance in your home.
And let’s say that you work out your home needs an average of 3000 Watts a day to keep all these appliances working. If you get an average of 4.3 hours of daylight, then divide the 3000 Watts by 4.3 and you’ll need a solar panel system that can deliver at least 698 Watts to power your home without relying on the national grid.
Remember, if you use your solar panels in conjunction with the main grid, you can start small and add more panels as you can afford them. This way you can start reaping the benefits of solar power without spending a large amount of money.
And if you consider how much a photo-voltaic system will save on your monthly electricity bill, it won’t be long before you can afford to increase your system to cope with your demands.
Photo-voltaic Solar Panel Installation
If you don’t have the required technical skills, it is best to leave the installation of your solar panel system to the experts. A company that is properly accredited will be able to install the system correctly and safely.
You have three different options when it comes to installing the solar panels:
- Ground mounted solar panels
- Roof mounted solar panels
- Thin film solar panels
Each method has its advantages and disadvantages. Whether you are buying a green home with this feature or retro-fitting an existing home, you’ll need to consider the cost and practicality of each system before you make a decision. Here is some more information about each kind of installation to help you:
- Ground mounted solar panels
In this case the solar panels are fastened to the ground, and you have a few more options to choose from:
- Static Mounted System:This is the most cost-effective type of installation, provided you have the space for it. The panels are mounted in a position to capture the maximum amount of sunlight.
- Active Solar Tracker:These panels actively track the sun during the day to absorb the maximum amount of sunlight.
- Passive Solar Tracker:This system uses heat from the sun to move a liquid inside the tracker from side to side. So gravity does the work of moving the panels and it eliminates the need for motors, gears and controls. This makes it slightly cheaper than an active solar tracker.
Ground mounted solar panels are ideal if you have a large area of unused land. You can install more panels and enjoy higher savings. And you don’t have to make any changes to rooftop to accommodate the panels.
- Roof mounted solar panels
You can mount photo-voltaic solar panels on just about any kind of roof, although tiled roofs can present a bit of a challenge. The panels are mounted directly on the roof and will not interfere with the aesthetics of your home.
They don’t take up any space on land that you may want to use for other projects and they offer additional protection from the weather and general wear and tear. This increases the value of your property. They’re also faster and easier to install than ground mounted systems.
- Thin film solar panels
Although these aren’t more efficient at collecting sunlight than other solar panels, they have some attractive advantages. They are literally glued onto the roof which eliminates the risk of damage to your roof. They’re lighter than other panels too and in very hot climates they tend to work better than conventional panels.
The size of your property, the position of your roof, how much energy you need to generate and the installation costs all need to be taken into consideration. You should also work out how much you’ll save to determine your return on investment. You might be surprised to find that solar panels are not that expensive to install.
The benefits of a photovoltaic system
The energy generated from solar panels is a renewable resource. Unlike coal and gas it will never run out and you’ll enjoy free electricity for at least 25 – 30 years (this is the average lifespan of a solar panel).
Solar panels provide a safe, non-toxic and environmentally friendly form of power for your home. It doesn’t produce any harmful emissions and you’ll never have to suffer the inconvenience of a power blackout again. With the savings it generates, you’ll have more money to spend down the line as the cost of electricity continues to rise.
Light, heat and power have become a part of our modern lives. Without a steady supply of electricity we cannot work, cook, communicate or play. Unfortunately, increasing demand from businesses and individuals is placing a strain on our national grid. Not only can the national supplier not cope with this demand, but it is also forcing the price of electricity up all the time.
There has never been a better time to invest in this green technology. You will quickly recover your initial costs in the form of regular savings on your monthly running costs. And you can always start small and increase the number of panels as you can afford them.
Is the only thing holding you back from investing in a green home the fear that you simply can’t afford it? It’s a common misconception that living off the grid is only possible for the rich. While other’s think that converting their existing home will result in over-capitalization. By the end of this article you’ll come to realise that green homes are not just affordable, but actually add more value to your biggest investment.
Starting from scratch
If you’re in the market for a new home, it makes sense to look for one that already has many green features. Although there are not many of these homes available yet, these homes boast several innovative features that are not only eco-friendly, but contribute significant savings to the running of your household.
Knowing what to look for in a green home is the first step to evaluating whether it will be a good investment. Here are some pointers that you can use:
- It makes the best use of the location: An eco-friendly home should work with the environment to achieve maximum efficiency. If it’s correctly orientated, a green home can use natural sunlight to ensure that it’s easier to heat in winter, and just as easy to cool in summer. Taking advantage of natural sunlight and shadow means you spend less money keeping your living space at a comfortable temperature throughout the year.
- It is properly insulated:Most regular homes aren’t well insulated at all. This means that any money you spend trying to make your home comfortable just goes to waste. A green home is not just well-insulated; it also makes use of eco-friendly materials to ensure comfort and sustainability. The floors, walls and roof of your green home should all be insulated.
- It uses efficient heating and cooling systems:Underfloor heating and cooling may sound like an expensive luxury, but in a green home it provides a more efficient method of keeping your home at the right temperature. Use the innovative hydronics heating and cooling system to achieve this. Pipes laid throughout the house enables hot and cold water to be pumped under the flooring. This is far more efficient and affordable than using heaters in winter or air conditioners in summer to adjust the temperature of your interior spaces.
- It relies on solar energy:This may seem to be the most obvious feature of green homes. At the very least, a solar water heater provides free energy for heating the water that you use on a daily basis. If you instead add different panels and batteries, you can generate enough power to run your entire home without relying only on the grid.
- It’s water-wise:Clean water is rapidly becoming one of the most precious resources on the planet. And as time goes on, accessing water will become even more expensive. That’s why most green homes make use of water tanks to collect rainwater which can be used for everything from washing your car to flushing your toilet, and importantly to irrigate your garden. And the good news is that this doesn’t have to take the form of an unsightly tank in your garden. Instead, they are buried underground and fitted with energy efficient pumps to make the water available where you need it.
While these are just some of the basic features that any good green home should have, look out for those that offer little extras. Double-glazed windows, a garden with indigenous plants and bamboo flooring or counter tops all go a long way to making your home efficient and sustainable.
Counting the cost
Understanding the true cost of a green home requires you to do some serious calculations. While it’s true that you initial investment is higher than normal, you should factor in your future costs to see how much you’ll save in the long term.
To do this, you’ll need to calculate how much energy and water you currently consume and what it costs you every month. You can do this by monitoring your consumption and bills for a month or two. Then, you’ll need to estimate how much your expenses will increase as the cost of these resources continues to rise. Finally, you can offset this against the initial costs of buying a green home.
You’ll realise, as others have, that investing in a green home offers you substantial future savings. On average, you’ll find that it takes between 8 – 10 years to recoup your green investment. And, you’ll have many years of future savings to look forward to. As the costs of electricity rises, you’ll actually end up saving even more with each passing year.
Buying a green home is a serious commitment though. To really appreciate the savings you can enjoy, you’ll remain in your home longer—and when moving, you’ll move to another eco-friendly home of course.
The good news doesn’t end there. Should you ever sell your green home, you’ll find that you can command a higher price for your property. And because green homes require less maintenance, you won’t have to spend a lot of money preparing your home for resale.
Retrofitting your existing home
Even if you’re not in a position to buy a ready-fitted green home, there are several things you can do to make your existing home more energy-efficient. Retro-fitting an existing home with green features is often considered expensive. But once again, you need to take into account your future savings to determine how cost-effective these measures are.
Aside from cost, most people are unsure of where to start greening an existing home. However, it’s always a good idea to start small and build-up to bigger projects. Very often, some serious research is required to determine just what the final cost and savings may be. If you need help, consult with experts who will be able to give you the right advice. Some of these projects require specific knowledge and tools, so don’t be tempted to take the DIY route if you don’t have the necessary skills.
There’s more to owning a green home than just enjoying the cost savings. It requires a mind-shift to start living in a different way. So if you think that you’re ready to embrace a new way of living, try out some small projects before committing to the bigger ones.
- Be aware of how much energy you use: Simply turning off the lights as you leave a room is a good habit to develop. If you do eventually install photo-voltaic solar panels to power your home, you’ll need to be conscious of your energy consumption. That way, if you do make the switch to solar power, you’ll use it wisely and not waste it.
- Use energy efficient products: Light bulbs, dishwashers and fridges all consume electricity. If you ever get to the point where you generate your own electricity, you’ll want to make sure your household appliances are energy efficient.
- Monitor your water usage: Cutting down on your time in the shower can be difficult. But ultimately, it will help you save money on both your water and energy consumption. If you’re going to install a solar water heater, you’ll appreciate just what it takes to have a hot shower in the morning.
- Get water-wise: It’s so easy to just turn on a tap and have access to fresh water that we tend to take it for granted. So start thinking about all the water you use during the day and what steps you can take to cut down. Plant indigenous in your garden, pop a brick in your toilet and re-use your grey water for washing your car.
Once you’re aware of your consumption habits, it will become easier for you to see the value in investing in the bigger projects. When you’re ready to make the change, here are some of the ways you can retro-fit your home:
- Solar water heaters: Installing a solar water heater can knock a good 30% off your monthly electricity bill. When measured against the installation costs, it means you can re-coup your investment within 4 – 5 years. Most solar water heaters come with a five year guarantee and last between 15 – 20 years. As they don’t require much maintenance, this makes them one of the easiest green features you can use in an existing home.
- Insulation:An energy-efficient home is one that is well insulated. With existing homes it may be difficult or costly to add more insulation, but the investment is well worth it. Often your roof is the best place to start as it’s quite easy to add a layer of insulation here. But be sure to use environmentally-friendly material for this project. You can also check your windows and doors for air leaks and use insulating strips or caulk to seal them from draughts.
- Rainwater harvesting tanks:This very much depends on the space you have available on your property. However, there are plenty of options available on the market; your bound to find one that suits your requirements. These tanks can also be buried underground so they won’t detract from the appearance of your property. And they can be fitted to work with the existing municipal supply so you’ll never have to worry that you won’t have access to water when you need it.
- Photo-voltaic solar panels:Living off the grid is possible, but for existing homes it requires a significant investment. However, you can easily start with some panels and add to them as you save on your monthly bills. As with the rainwater tanks, you can supplement your solar panel with the municipal electricity supply.
Once you start investigating the options available for retro-fitting an existing home, you’ll see just how easy and affordable it can be. Not only will you enjoy considerable savings on your monthly running costs, you’ll also be adding significant value to your home. And should you ever want to sell your home, you’ll be able to command a higher price.
What’s more affordable?
The answer to this question will depend on your current situation. If you’re considering buying a new home, it would make sense to find one that has all the green features you want. And while this may mean that you spend more money initially, you will end up saving immediately and continuously.
If moving is not an option, then this article should prove to you that it’s still possible to go green without spending a fortune. Researching various green features will help you make a decision on where to start. And you’ll find that once you have implemented some of these suggestions, you’ll save money which you can put towards your next project.
It’s safe to say that being environmentally conscious isn’t just for the rich. With proper planning and dedication, anyone can change their home into green home. Are you ready to make the change?
What’s the first thing that springs to mind when you hear the words ‘solar power’? Do you picture an eco-friendly home with solar panels on the roof? You’re not wrong, though there are some other ways to harness the power of the sun for your home. Using solar power can help you reduce your reliance on the grid and put cash back in your pocket.
Solar power is a versatile and sustainable source of energy. Here are some unusual ways you can use it to power your home:
Solar water heaters
Heating water for your home accounts for a significant portion of your monthly energy bills. A family of four needs a lot of hot water for their daily cleaning, bathing and cooking needs. Installing a solar water heater can reduce the cost of generating hot water by as much as 80%. Solar heaters use either evacuated tubes or solar thermal panels to heat the water directly. The heat is then used to warm up water for your household needs.
Apart from saving on costs, a solar water heater can also save water and time. With green homes, during building by installing a linked-loop throughout the home, enables that as soon as you turn on the tap, hot water is available. You don’t have to let the tap run and wait for the water to reach your desired temperature. Few people realise that greener living can actually be more convenient.
Keeping the lights turned on in a dark area of your home is a sure way to run up your energy bill. Installing a skylight in a poorly lit area is a cheaper and better way to bring light into your home. Sunlight is healthier and completely free. If you install a skylight that opens, you can use it to release warm air and keep your home cooler during the hot summer months.
You don’t always need a large skylight either. Tubular skylights are a good option for smaller areas and allow you to funnel daylight into the areas where you need it. They’re inexpensive and relatively easy to install.
Solar garden lights are the perfect way to light up your outdoor areas without flipping the switch. With a tiny solar panel, battery and LED lamp, you can set your garden lights to turn on automatically when the sun goes down. They come in a variety of forms: string lighting, fairy lighting, tube lighting and even Christmas lights. You can get creative and make your garden look even more beautiful without spending a cent on electricity.
Solar chargers for electronic devices
Although they aren’t common, you can find solar charges available in South Africa. These handy devices can be used to charge small electronic devices such as your cell phone or tablet. Depending on your needs, they are inexpensive and portable. Essentially they consist of a small solar panel and some models may include a battery.
You can use them at home to charge your electronics for free and they’ll help to reduce your carbon footprint. Solar charges are the perfect example of how green living can be affordable and convenient.
You’ll find over 60 different types of solar cookers and are categorised as follows:
- Box solar cookers
- Panel solar cookers
- Solar kettles
- Parabolic solar cookers
- Hybrid cookers
What they all have in common is that they use energy from the sun for a chore that you have to do every day—cook food. Not only do they provide you with massive energy savings, they’re much safer to use. They don’t require any kind of fuel and they don’t produce any flames or fumes. Solar cookers provide a clean and efficient form of energy which is completely free.
Going solar doesn’t mean having to sacrifice your creature comforts. If anything, using sunlight to heat your water and charge your electronics makes your life easier. If you’re reluctant to incorporate solar power into your home, perhaps these examples will change your mind. Aside from the cost savings you’ll enjoy, there are some other very good reasons to use solar power in your home.
Reasons to go photovoltaic solar
Photovoltaic cells are incredible. They generate an electric charge when photons in the sunlight hit them. These solar cells are usually made from silicon and mounted in panels on the roof of the home where they are exposed to the maximum amount of sunlight.
By absorbing photons from the sun they generate enough electricity to run your home without relying on the grid. This makes them perfect for eco-friendly houses which are designed to reduce your carbon footprint. The cost saving alone are a good reason to consider installing photovoltaic solar panels.
But there are some other reasons why solar photovoltaic panels are a good investment, particularly if you’re interested in green living.
Photovoltaic solar energy is affordable
While you may think that installing photovoltaic solar panels is expensive, they are actually quite affordable. The cost has come down considerably as the demand for alternative energy sources has increased. Today, they cost half as much as they did in 2008 and the solar market has increased substantially.
Photovoltaic solar panels are easy to install
If you’re retrofitting an existing home, you’ll be pleased to hear that installing photovoltaic solar panels is not that difficult. If you have the knowledge you may be able to do the installation yourself. Though it’s always wise to work with an expert. They’ll be able to provide you with the right advice when it comes to choosing and fitting the panels for your home. Your energy requirements should be assessed and the size and position of your roof taken into account before installation begins.
Photovoltaic solar panels require little maintenance
Green technologies are surprisingly robust and photovoltaic solar panels are an excellent example of this. They are strong enough to survive some tough weather conditions such as rain, wind and hail. A high quality installation can last as long as 30 years and requires hardly any maintenance. Monitoring and operating your photovoltaic solar panels and battery back-up will be no hassle at all.
Photovoltaic solar energy is reliable
This is of particular importance in South Africa where the power supply can be erratic. Load shedding can be frustrating and inconvenient. But with photovoltaic solar panels you never have to worry about coming home to a house without power. Given our sunny weather, you can look forward to a constant and free supply of energy throughout the year.
Photovoltaic solar energy is safe and clean
Solar cells are environmentally friendly. They do not burn fuel, produce noise or pollute the atmosphere. You get all the benefits of a constant supply of power without damaging the environment or contributing to the load on limited resources. Your carbon footprint is reduced without having to sacrifice any modern conveniences.
Photovoltaic solar panels conserve water
And while you’re reducing the strain on the national grid, you’re also saving water. Electricity generated from a photovoltaic system use 100% less water per kWh of electricity than coal power plants. That’s a double saving for greener living enthusiasts.
The big benefit of photovoltaic solar power for home owners still lies in the impressive long term saving you achieve. If you take into account the fact that electricity costs will only continue to rise, investing in photovoltaic solar power now makes it the best investment you can make for your home. While the initial installation costs are high, your savings will enable you to offset that in just a few years. And you can always start small and add on more panels as you can afford them.
The more you understand photovoltaic solar power, the more you’ll be convinced that it’s worth investing in. Here is some information you may find useful.
Photovoltaic solar power components
A photovoltaic system comprises of the following components:
- Photovoltaic solar panels: Made from silicon, these panels are mounted on your roof where they catch the sun and convert that energy into power for your home.
- DC-AC inverter: This unit is responsible for converting the current generated by the panels into a form that can be used for running your appliances and devices.
- Storage batteries: South Africa averages upwards of 2500 hours of sunshine a year. It’s entirely possible that your system could generate more energy than you need. Storage batteries are used to store the power providing you with a constant and uninterrupted supply every day.
- Charge controller or regulator: This prevents damage to your batteries as a result of excessive discharging or overcharging.
All these elements are required, and you can alter the size and number of photovoltaic solar panels depending on your budget and needs. The beauty of a photovoltaic system is that you can add to it at a later stage. This allows you to start small and increase capacity when you can afford it.
Photovoltaic solar power installations
You can choose from three types of installations depending on the size of your property:
- Ground mounted: This type of installation is ideal if you have a large, clear area of land to work with. You can install as many photovoltaic solar panels as you need.
- Roof mounted: Mounting your photovoltaic solar panels on the roof ensures that they receive maximum exposure to the sun.
- Thin film photovoltaic solar panels: These panels are glued onto your roof which eliminates the risk of damage to your tiles. They are perfect for sunny climates as they collect more energy than conventional panels.
Take some time to work out how photovoltaic solar panels could make a difference to your monthly expenses and weigh that against the costs of your preferred installation type. You’ll see why going photovoltaic makes sense.
Though retrofitting photovoltaic solar panels is a big investment to make, it’s the perfect way to start living green. Alternatively, if you’re in the market for a new home, look for one that already has this feature.
Photovoltaic solar energy can be used in different ways to help you cut costs and start living green. Whether you’re ready to say goodbye to the grid for good, or just make small changes to reduce your consumption, the technology does exist. And with each passing year, new developments make eco-friendly homes that utilise photovoltaic solar power easier to afford. Don’t wait too long, the sooner you start living green, the more you’ll save.
Despite the lack of rolling blackout in recent months, South Africa is still facing a power crisis. Investing in eco-friendly homes with photovoltaic solar panels is one solution to the problem. Though these homes are more expensive than traditional ones. If you’re a first time home buyer, does it make sense to splurge now and to save in the future? Here’s everything you need to know about owning a photovoltaic solar powered home.
The advantages of photovoltaic solar power
Beyond the obvious savings on the monthly electricity bill, photovoltaic solar power makes sense for a number of good reasons. Eco-friendly homes that run on photovoltaic power systems include the following benefits for homeowners:
Never run out of electricity
As long as the sun is shining, we’ll be able to run the home. The sun is a renewable source of energy unlike coal and gas. It’s not subject to price increases, and isn’t likely to run out any time in the next 5 billion years!
Get paid for excess electricity
In the future, we may get paid by the national supplier when generating more electricity than required, by feeding that excess back into the grid. Adopting green living habits could prove to be profitable.
Many Electicity Suppliers are already paying for excess electircity to be fed back into the grid.
Always have electricity when needed
By adding backup batteries to the photovoltaic solar system, excess energy is stored for use during the evenings. And when batteries aren’t installed, by using a hybrid grid-tied system, switching between photovoltaic solar power and the grid is enabled. That way electricity is always available.
Low maintenance costs
While photovoltaic solar panels seem futuristic, they are easy to care for. With few moving parts, there’s little chance that of spending a fortune on repairing or replacing parts. The only thing needed is to keep the panels free of dust and debris. If the panels are dirty they won’t absorb as much energy from the sun. All it takes to keep the panels clean is a hose and a little soapy water. Eco-friendly houses are generally cheaper and easier to maintain.
New developments are finding ways to integrate photovoltaic solar power and other green living features into the design of a home. Rainwater harvesting tanks, for instance, are installed underground to ensure they don’t detract from the appearance of eco-friendly houses. The benefits of photovoltaic solar power has resulted in more homeowners retrofitting this green technology to their existing homes.
ROI of a photovoltaic solar power system
After a few years, monthly savings on electricity pays for the photovoltaic solar power system – thus it pays for itself. Depending on the size of the system ROI is within five to eight years. Calculating current electricity costs over say 10 years, adding a modest price increase; keeping in mind the home is fully temperature controlled too, is an easy indication of the ROI period.
After that, savings continue progressively as the price of electricity increases. Keeping in mind when the green smart home is sold on, the cost of the green features is fully recouped. Living green adds value in surprising ways.
The photovoltaic solar power system will last for many years
Photovoltaic solar panels are built to last for many, many years. Improvements in the technology will bring the cost of components down over time. Nevertheless, we’re able to start saving by installing a photovoltaic solar power system.
How does solar power work?
Greener living is the way to go. Photovoltaic solar power is a main green feature. Broadly speaking, here is how it works.
The sun operates like a nuclear reactor, sending out packets of energy known as photons which reach the surface of Earth in eight-and-a-half minutes. Every hour, enough photons bombard our planet to satisfy global energy needs for a whole year!
Such a system is made up of photovoltaic solar panels and an inverter. The panels capture the energy from the sun and transform it into Direct Current. The inverter takes this and converts it into Alternating Current. It is this Alternating Current that is used to power the appliances in the home.
How much do solar panels cost?
There is no standard answer to this question. It all depends on how much power is needed to provide for a family’s needs. When designing eco-friendly houses, developers take the following into consideration:
- How much sun does the rooftop receive?
- What is the size of the roof?
- How much power is required?
- What is the budget?
- Whether it’s a hybrid grid-tied system?
- Whether backup batteries are required?
- Whether smart technology is required?
These are the questions to consider when investigating the idea of installing a photovoltaic solar power system; to an existing property or when it’s being designed for a ready-built eco-friendly home.
Which solar power system is the best?
There is a choice of three systems. Let’s take a closer look at them:
Stand-alone photovoltaic solar system
This type of photovoltaic system is also known as an ‘off-grid’ system. It operates independently of the national grid and makes use of backup batteries to store the power generated by the photovoltaic solar panels during the day. This means solar energy is used to run the home late into the night and during periods of bad weather.
Hybrid grid-tied system
The system works with the national grid. It reduces the electricity bill and is able to switch over to the national supply when needed.
The system also acts as a backup during load shedding and power disruptions.
Ideal green smart system: hybrid grid-tied, photovoltaic with battery backup
When implementing a photovoltaic solar system, adding backup batteries and tying these to the grid, is the ideal green smart home system.
Such a system works like this:
During the day, the photovoltaic system runs the green home directly from the sun. Excess power is stored in the backup batteries. When the backup batteries are replenished, further self-generated excess power is fed into the grid, accumulating a credit with the grid service provider. On most days, by 11h00 the backup batteries are loaded and excess is going to the grid. From around 18h30 the home is run from the backup batteries. Once the batteries reach their evening threshold, the grid is used; first depleting the previously earned credit. Thereafter the grid usage is paid for. The backup batteries evening threshold allows for battery power to run the home during the morning peak period, after which the sun kicks in again. This cycle is repeated each day.
By designing the system to use the home’s own electricity during the morning and evening peak periods, should tiered electricity tariffs be implemented, the highest tariffs is never paid!
The number of photovoltaic solar panels and backup batteries installed is calculated based on evening usage and how much excess is fed into the grid. This is the ideal green smart electricity system. Becoming independent of the grid on own terms.
How much will I save?
The main reason for investing in any kind of green technology comes down the savings. When determining whether spending a substantial amount of money on a photovoltaic system is worth it, understanding the potential savings is necessary. With photovoltaic solar power there are three areas where savings are achieved:
- Electricity bill
As mentioned earlier, monthly savings will be determined by how much energy is needed to run the home. The up-front cost of installing a photovoltaic solar system will be offset by the savings. The more that is spent on electricity now, the more the savings are in the future.
Photovoltaic solar systems require little maintenance so apart from the initial installation costs, there is the maintenance costs.
- Property value
Although it’s not a direct saving, the cost of the photovoltaic system is incorporated in the property value when selling it on. Eco-friendly homes will become more valuable as the trend grows in South Africa, resulting in higher resale values.
- Avoid future price increases
The cost of electricity will continue increasing. Though South Africans have enjoyed cheaper electricity for years, that’s changing. Opting for photovoltaic solar power arrests any future price increases.
Green living is here to stay. It’s a real solution to the challenges we face of limited resources that will become more expensive in the future. To maintain our standard of living, it’s worth embracing green living philosophies to reduce our dependence on these resources without sacrificing comfort.
Photovoltaic solar energy makes a lot of sense for home buyers and existing home owners. Be prepared for the future!
Finding the perfect home is hard work. As it’s the biggest investment we’ll ever make, it’s worth taking our time to consider the advantages and disadvantages of every property. We’d also need to consider how much maintenance our home requires. If our preference is to spend more time enjoying our home, and less time maintaining it, eco-friendly homes are ideal.
The importance of maintaining your home
It’s something that first time home buyers rarely consider—how much will it cost to maintain a dream home? It’s easy to fall in love with a property that we’ve only seen a few times. Only when living in the home will we realise the work it requires to keep it in tip-top shape and in perfect working order. Maintenance is essential to maintain or improve the value of our home for years to come.
A swimming pool or a large garden might be a pre-requisite: They both need a lot of work; to keep the pool clean and sparkling; and a lot of water is required to keep the garden. Maintenance requires time, effort and money. By adopting a greener living philosophy reduces the aforementioned multiple fold. Looking at purpose built eco-friendly homes thus becomes an attractive option.
Do eco-friendly homes require special maintenance?
Does green living features such as photovoltaic solar panels and a rainwater harvesting system require special maintenance with prohibitive costs? Although these are cutting-edge green technologies, they been designed to be simple and easy to maintain. Let’s look at each of the features typically found in eco-friendly homes and how much they cost to maintain:
- Photovoltaic solar panels
Photovoltaic solar panels are made of semiconductors, a material that absorbs energy from the sun and converts it into electric current to power appliances and devices in our homes. They’re a standard feature of eco-friendly homes and are often the first image that comes to mind when we hear the words ‘eco-friendly’. They help homeowners reduce their reliance on the grid for electricity.
While they look impressive, photovoltaic solar panels actually require very little maintenance. They’re built to last and to withstand hail and storms. Photovoltaic solar panels don’t have moving parts that rust or break. The only maintenance needed is cleaning.
Safety first! When working on the roof to clean the photovoltaic solar panels requires safety precautions.
Dirt, grime, bird droppings and debris block the sun from being absorbed efficiently by the panels. So cleaning is a key aspect of photovoltaic solar panel maintenance. Inspecting the photovoltaic solar panels periodically, around once per year. If they do need cleaning it’s as easy as using a garden hose to rinse off the worst of the dust and grime. If they need more attention, using a squeegee and some soapy water gives them a good clean. Then using a hose to rinse off the soapy water and they’ll be as good as new. This is an easy task for DIY enthusiasts. Or is easily done by a professional. Remember safety first!
Aside from a simple wash down, photovoltaic solar panels do not require any expensive, specialist maintenance.
- Rainwater harvesting tanks
Harvesting rainwater for use in the garden and home is an effective way to reduce our reliance on the municipal supply. Harvested rainwater reduces the use of municipal water over the year by around 60% and fits in with living green. Here are some preventative maintenance points to consider:
- Clear your roof and gutters
Remove leaves, debris and overhanging branches from the roof and gutters. That way, bird dropping won’t find their way into the tank and cause water discolouration, odours or bacterial growth.
- Check the screens
Periodically check the inlet/s and outlet/s screens and filters for leaves and insects, any blockages and damage, and clean or repair the screens or filters. Some systems come with self-cleaning options.
- Keep the pump clean
Depending on the type of system, the pump needs regular checking to make sure it is working properly. Cleaning/replacing the filter is a necessity. This is another DIY job; by following the manufacturer’s instructions.
- Check the first-flush diverters and rain-heads
Regularly clean and empty the first-flush diverters and rain-head. This is necessary to prevent roof debris, insects and plant particles from getting into the system. Certain systems do this automatically.
- Check for cracks, holes and gaps
With some tanks it is necessary to ensure they are structurally sound. Repairing any gaps or holes stops animals and insects from getting into the tank and reduces the risk of algae and bacteria infecting the system.
- Taking care of the water filters
If the tank is used to provide water to toilets and the washing machine, it will have a water filter. These filters generally need to be rinsed and where required replaced. This is another small maintenance job for the DIY enthusiast.
- Inspect the tank for accumulated sludge
Sludge will accumulate in the tank and needs to be checked and cleaned professionally.
For all the added value and savings rainwater harvesting tanks provide, the maintenance they require is minimal. Most eco-friendly houses install water tanks underground to save on space and maintenance costs. Because these tanks aren’t exposed there’s minimal chance for them to crack or leak.
- Heat pumps
Although heat pumps may not be the most eco-friendly option for some scenarios, they are incredibly efficient. This makes them a popular choice for eco-friendly houses. They require professional servicing twice per year.
- Bamboo countertops
A popular choice for eco-friendly houses; bamboo is a material that’s renewable, solid and durable. It looks beautiful and doesn’t need too much maintenance. And it’s not limited to countertops. Bamboo can be used as flooring, furniture and in construction.
A professionally installed bamboo countertop gives many years of pleasure. Here are some pointers to keep bamboo countertops looking as good as the day they were fitted:
- Wipe the surface down on a regular basis with a damp cloth and an all-purpose, non-abrasive cleaning product. Avoid ammonia based cleaners as this may damage the surface.
- Never use harsh chemicals or thinners based products on the countertop.
- Don’t chop anything directly on the surface. Bamboo is tough, but knives and other sharp instruments will damage them.
- If the surface is damaged, a light sanding and re-sealing should restore it to its previous condition.
- If the bamboo countertop is severely damaged, it can be repaired and re-sealed by a professional.
- Avoid putting hot pots and pans directly on the bamboo countertops. The heat will damage the surface.
Bamboo is a beautiful material that is very easy to care for. Looking after the bamboo countertops will avoid any expense repairs. In fact, as part of green living, it’s easy to make a natural cleaning solution to clean the countertops safely.
- Aluminium and stainless steel
You cannot speak of durable building materials without mentioning stainless steel and aluminium. Green living is focused on using quality materials that last well and don’t have to be replaced often. Both of these metals live up to that philosophy.
As both of these materials are so easy to maintain, it’s worth investing in a home that utilises them.
- Stainless steel
Used to construct the frame of eco-friendly homes, stainless steel is one of the recyclable materials in the world. Every year, millions of tonnes of stainless steel is recycled and used in a variety of construction projects. It’s is durable and strong and doesn’t rust. Stainless steel is a first choice for balustrades.
Aluminium window and door frames requires far less maintenance than wooden or steel frames. They don’t need to be painted or varnished and are easy to clean. When powdercoated almost no maintenance is required.
- Face brick and naturally coloured roof tiles
There are few building materials requiring as low maintenance as face brick. With no plaster and paint, big maintenance projects are not required to keep the outside of the home looking neat. Eco-friendly houses favour face brick because it’s a durable material that doesn’t need any special care.
And when combined with naturally coloured roof tiles, maintenance is reduced even more. Naturally coloured tiles never fade and stand up well to hail, wind and other harsh weather conditions. Making smarter choices is a key element of green living.
- A water wise garden
A water-wise garden cleverly landscaped and combined with indigenous plants and natural pest care saves time and money on maintenance. And requires very little water.
Greener living focuses on preserving resources and making our lives comfortable and efficient. A water-wise garden is the perfect example of this philosophy. Indigenous plants are well suited to the local environment and will thrive with little attention.
First-time home buyers get caught up in the excitement of house-hunting and don’t stop to consider the amount of effort and expense it takes to maintain a home. Being aware of the maintenance and costs, and of eco-friendly homes, creates more options. Green living and eco-friendly homes bring about benefits now and in the future as a green home increases in value and remains attractive to future buyers who recognise the benefits of living green.
Environmentally friendly homes are not the norm in South Africa. Homeowners are however slowly realising that green homes are sound investments. They have significant advantages over traditional homes that will become important as the years go by. If you’re unaware or unconvinced that investing in eco-friendly homes is a wise move, here are some reasons why greener living is a smart move.
Eco-friendly homes have a longer lifespan
Would it surprise you to learn that green homes age better than traditional homes? That’s because eco-friendly building materials are tougher. For example, steel beams equip a home with a solid frame that is much stronger than wood. As a result, green homes can withstand high winds without damage. And steel beams aren’t at risk from rot or termites.
Even natural, sustainable construction materials are treated so that they last as long. In order to minimise waste, green living demands that every element of a home is used to maximum effect.
Green homes are healthier
Paints, adhesives, upholstery, carpets and other materials all emit Volatile Organic Compound (VOCs) into your home environment. You may not be aware of it, that breathing in these dangerous chemicals can affect your health. They are responsible for a variety of conditions that range from mild to serious. One thing is certain; being exposed to these VOCs for long periods of time result in being more susceptible to illness.
On the other hand, green living focuses on using products that are non-toxic and not harmful to the environment or people. Low VOC paints, varnishes and adhesives are available and used in the construction of eco-friendly houses. Wooden flooring is an alternative to carpets. Even tiles made from recycled materials are available to ensure that green living principles are followed throughout the construction of a home.
The result is that green homes have a better air quality. And good air quality reduces risk of illness and allergies. It’s difficult to imagine that a home could be a source of becoming sick, though those living in eco-friendly homes know that being environmentally conscious makes a difference to their health.
Eco-friendly houses are more valuable
Should the time ever come to sell, green homes command more money. As the trend towards greener living gains popularity, buyers will be on the look-out for eco-friendly homes. Features such as photovoltaic solar panels, comprehensive insulation and a rainwater harvesting system make such homes attractive to eco-conscious buyers.
It’s these features that make green homes comfortable. Green living is about modern conveniences, about luxury living. Photovoltaic solar power and rainwater harvesting means efficient access and use of two important resources. Why be solely dependent on the grid for electricity when it’s easy to generate electricity. And the same with water, why be solely dependent on municipal water, when it’s easy to harvest rainwater.
When compared to traditional homes, taking the benefits of the aforementioned translated into monthly savings, and that green homes are fully temperature controlled throughout the year, and that the temperature of each zone is individually adjustable, it stands to reason that eco-friendly homes are valuable assets.
Green homes are cheaper to run
One of the noteworthy points of eco-friendly houses is their low running costs. Other points are their convenience and benefits to the environment. In fact, living green saves a substantial amount of money. In comprehensive tests, calculated savings of up to 65% can be achieved – that is – including the Hydronics Radiant heating and cooling – registering better than optimal temperatures during the tests in summer and winter.
Harvesting rainwater reduces monthly water costs by as much as 60% averaged over the year. Installing a solar water heater reduces water usage slightly and saves electricity based on usage patterns. Using photovoltaic solar electricity to power a home reduces electricity costs by almost by 100%.
Even small actions result in big savings over time. For example, switching to Compact Fluorescent Lights (CFLs) reduces electricity consumption immediately. Green living is about finding efficient ways to achieve things.
And with costs of basic services such as electricity, water and refuse removal continuously increasing, living in a green home makes solid economic sense.
Eco-friendly homes are attractive
Homes fitted with green technology is not unattractive. When building eco-friendly homes from scratch, designers and developers find ways to incorporate green features so they don’t stand out. Photovoltaic solar panels are indeed visible. And large rainwater harvesting tanks are usually installed underground and out of sight. It’s even possible that an eco-friendly home isn’t distinguishable unless told.
Very often, the natural materials used to decorate eco-friendly homes are as beautiful as traditional materials. Bamboo floors and countertops add a touch of luxury to any home. Recycled materials that have been re-purposed have a charm of their own. Finding eco-friendly tiles, paints or finishing’s to decorate interior spaces are easy to find. More suppliers are recognising the demand for green living alternatives.
All that is needed is educating about these choices and asking manufacturers the right questions. Take into account how products are sourced and handled and to decide whether they match green living principles.
Green homes keep working during shortages
There’s nothing worse than arriving home after a long day to discover a power or water outage. With a green home, this won’t be the case often. Even during rolling black-outs, cooking, having a hot shower and lighting the home continues. Investing in back-up batteries to store the power generated by the photovoltaic solar panels, though expensive, provides power when needed.
Likewise, rainwater harvesting tanks supply water as designed even when the municipal supply is turned off. Or, if water restrictions are instituted, rainwater is likely available from the previous rains for flushing the toilets and irrigation.
These are examples of how green living make life easier. Being self-sufficient enables the use of resources as implemented for the home. And reduces the impact of price increases for power and water. In a green smart home, it is easy to monitor and manage usage to retain basic comforts.
Eco-friendly homes are the future
The idea of building sustainable homes has already taken off in many parts of the world. Designers and builders are constantly coming up with innovative ways to build homes that work with the environment and use limited resources efficiently.
At the same time, more homeowners are becoming aware of how green living saves money. Swapping out old lightbulbs for more cost-efficient CFLs or buying a geyser blanket, is beneficial to our pockets and the environment. These are small aspects of being eco-friendly. Image implementing green features comprehensively.
If you’re in a position to buy a purpose-built eco-friendly home, don’t hesitate. It’s worth the investment. Not only will you save on your monthly costs, you’ll be investing in the future. An eco-friendly home is a home for life. You’re investing in a home that will last you well into your retirement, a home that you can leave to your children.
Green homes are better for the environment
It’s worth stating this advantage again. The benefits of eco-friendly homes extend well beyond the construction phase. As time goes on, green homes continue to reduce impact on the planet: Using less resources and releasing fewer toxins into the environment.
Although the full impact of current habits is yet to be felt, by adopting green living habits, we’re contributing to an improved environment. Few people appreciate how uncomfortable life would become if steps aren’t taken to stop pollution or reduce the consumption of precious resources.
Greener living doesn’t require much. It requires changing just a few habits, and we stand to benefit as much as the planet does. Being committed to leaving our children and grand-children with a bright future, we’ll need to take action, rather sooner than later.
As is evident, there are many reasons to invest in a green home. In the future, eco-friendly homes will be in demand. Be an early adopter. Start saving money and reducing your impact on the environment.
What to look for in a green home?
If you’ve already decided that your next home should be a green home, here are some features to look out for when you go house hunting:
- Comprehensive insulation
One important feature of eco-friendly houses is how well they’re insulated. Retrofitting an existing home with ceiling insulation is not enough. An eco-friendly home will have:
- Ceiling insulation
- Floor insulation
- Exterior wall insulation
- Double-glazed windows
- Water pipe insulation
A home that is properly insulated will significantly reduce your cooling and heating costs. An underfloor Hydronics Radiant heating and cooling system will eliminate your need for heaters and air-conditioners. You’ll be able to control the temperature in separate zones for maximum comfort all year round without using much electricity.
Being well insulated contributes to sound proofing the home.
- Rainwater harvesting tanks and a water-wise garden
All eco-friendly homes have some kind of rainwater harvesting system. Whether tanks are installed underground or above ground, a pump and filter enables using harvested rainwater inside and outside.
Combined with a garden that features indigenous plants, water usage is minimal. And the harvested rainwater is available to flush your toilets and supply the washing machine.
- Heat pump or solar geyser
Both options provide you with hot water. Not only does this make eco-friendly homes more comfortable and convenient, it saves on water and electricity. With a linked-loop system, hot water is immediately on tap, reducing the need to run the water until it reaches the right temperature.
- Photovoltaic solar panels and backup batteries
For the full green living experience, include photovoltaic electricity. Reducing dependence on the grid provides massive savings on monthly bills. Backup batteries ensure that electricity is available during the evening when the sun is down.
- Eco-friendly fixtures
Bamboo countertops, reclaimed wooden floors and tiles and efficient use of building materials are all features of eco-friendly homes. The environmental impact of every material used in the home needs to be investigated. It’s the only way to ensure that building a green home creates the least possible impact on the environment.
Speak to the builders and designers and ask them about the various features they include in their eco-friendly houses. Work out how much you can save by living in a green home and compare it to the cost of living in a traditional home. You’ll discover how well-designed and efficient they are. Once you understand how greener living can make a difference to your life, you’ll realise that buying an eco-friendly home will be one of the best decisions you’ll ever make.
Title: Transcript of Interview with Jonathan Harf, CEO of Jex Energy
Presented by: Emmanuel van der Meulen
Guest Speaker: Jonathan Harf
Date: 9 May 2017
Number of Speakers: 2
File Duration: 11:48
Transcriptionist: Jacqui Jonk
Links are at the end of the transcript.
00:01 Introduction to Radio Live Green Smart
00:54 Introduction to alternative energy sources
01:57 What is solar energy?
02:33 Start of interview with Jonathan Harf
06:36 Three options for solar power
08:43 Benefits of solar power to the domestic user
11:43 Wrap Up
[Righto] so I’m just going to give a short introduction and then I’ll come back to you.
Emmanuel: Welcome to Radio Live Green Smart and to our interview this evening with Jonathan Harf, of Jex Energy. I’m the presenter Emmanuel, and a little bit of background on Radio Live Green Smart: it’s a forum to discuss green living and eco-friendly living and importantly a forum to discuss where you see any disrespect for the environment first hand. Bring such disrespect to us, we’ll assist to expose that environmental disrespect, use the contact us form to send the details of the disrespect, please provide comprehensive information.
Tonight’s talk is about alternative energy sources, most of the worlds current [electric] electricity supply is produced from fossil fuels such as coal, oil and natural gas. These traditional energy sources have various challenges including but not [limit] limited to rising prices, growing environmental concerns over the climate changes and limited supply of fossil fuels. As a result, governments, businesses and consumers are increasingly supporting the development of alternative energy sources. [Renewed] renewable energy sources such as solar, biomass, geo thermal, hydroelectric and wind power generation have emerged as potential alternatives which address some of these concerns. Top
What is solar energy? Solar energy refers to energy from the sun. The sun has produced energy for billions of years [it is most] it is the most important source of energy for life forms. Solar energy technologies use the suns energy to light our homes, produce hot water, heat homes as shown in solar tankless water heater reviews and electricity. Top
Emmanuel: Jonathan is joining us
Emmanuel: and he’ll be talking about Jex Energy and how they look at renewable solutions. Jonathan my first question is tell us about yourself and Jex Energy and what do you do? Top
Jonathan: Ok sure, well what we do exactly is pretty much what you were going on about there, is we supply and [insall] install renewable solutions, renewable energy solutions predominantly for residential and commercial, [um] as the need is arising we moving more into the industrial sector too. What our aim [is] is to really reduce the carbon footprint and have people less reliant on the normal utilities, fossil fuels what not.
Emmanuel: Ok, [what um]what would be interesting [um] especially from our point of view as well: why should people switch to solar power?
Jonathan: Well it’s a very good question [um] very simple answer. The people are using up the fossil fuels at a dramatic rate and it is really destroying our planet. That would-be option [well] reason number 1 to kind of go green. [um] reason 2 [inaudible] the growth of the solar market worldwide has seen a huge reduction in the price of solar panels, solar grid tie inverters, it is really becoming a cost-effective way to move over. You must remember that in South Africa [um] our electricity price is still relatively low compared to a lot of the rest of the world, so the quicker people here can move over to solar energy the better for them from a cost saving point.
Emmanuel: Yeah, just before we move on, I’m curious, are you finding traction? Are you finding a little bit of resistance? Is the market buying into this still in a small way or in a big way? How do you find the market?
Jonathan: I’ll tell you something, we’ve been doing this now for 6 years, for the first 4 years there was a lot of resistance[um] people were very hesitant, the prices were high, which did cause this obviously.
Jonathan: In the last 2 years, this industry has literally boomed, [it’s um] we are just getting requests from every sector in the market which is brilliant.
Emmanuel: Ok, even domestic dwellings?
Jonathan: Even domestic, and that now has also come down to the fact of the drop in the prices of batteries as well as the technology increasing [um] Tesler have released their Powerwall 2 which we are installers and suppliers of, and that battery is really changing the way people can live.
Emmanuel: Ok, is that the life of the battery or is that the cost or both? [inaudible]
Jonathan: It’s the life and the cost. They’ve been able to increase the life and reduce the cost.
Emmanuel: Ok I understand [righto]. [uh] Jonathan and then what are the different solar power solutions available either in the market or from your company?
Jonathan: Sure, so and in the market at the moment you would look at 3 different options. Top
6:10 cuts out
Emmanuel: Hello are you there? Hello?
Jonathan: There’s obviously [inaudible] hello can you hear me?
Emmanuel: You were out a little bit, just give [inaudible] please Jonathan.
Emmanuel: Jonathan sorry, suddenly something has gone wonky, [um] you come and go. Shall we just try again?
Jonathan: Can you hear me now?
Emmanuel: Yes, I hear you well. Top
Jonathan: Ok, alright, so your first option would be a grid tied system, this is have solar panels and a grid tied inverter, there’s no backup or battery storage with this system [uh] typically this is a cost saving system. The only drawback obviously is that you don’t get any benefit at night time. We find this system typically used in commercial situations where they are using most of their power during the day; that being said there is space for it in the domestic area.
The next system would be what you would call your hybrid system, this would be a system typically where you would have a battery bank as well as solar panels and an inverter. The solar panels would feed the house or the offices during the day, the inverter then would change some of that solar power into storable energy into your batteries. This would be then either used on a daily or nightly basis, just a small amount not to drain the batteries or used as a backup, say for example there’s load shedding or a power outage.
And the last system is a complete off-grid system this is where you do not have any grid, any Eskom grid or any power grid and we design a system around that. We’ve done quite a lot of systems for game parks and those sorts of situations where it’s too expensive for [inaudible] Eskom line [inaudible] completely off solar energy and batteries.
Emmanuel: OK and that must be the expensive one?
Jonathan: [ah] yes that is quite pricey, although as I said as technology increases, these systems are really becoming a reality. [um] Elon Musk with Tesler, they’ve set up an entire island, one of the islands of Hawaii, that are running completely off grid.
Emmanuel: OK, so it’s not impossible?
Jonathan: No, not at all.
Emmanuel: OK, [righto] thank you for those insights.
Emmanuel: Then if we can take it a step further and maybe you can cover the domestic [uh] dwellings as well [uh] as well as the industry but also let’s look at the [indus, uh] the domestic user. What are the benefits of the solar power? Top
Jonathan: Well firstly obviously, it’s the cost saving, so [um] although the pay back is still relatively long, [um] if you factor in Eskom increases, as you know are quite ridiculous sometimes there is definitely a cost saving. Another big thing is that you no so reliant on one sort of power source, the utility, whoever it is.
Jonathan: So, it really lets you be a bit more free if you will [uh] obviously we also a green company so we believe in reducing your carbon footprint and all those sort of things.
Emmanuel: [inaudible] yeah OK. Just on the [the] grid tied that you mentioned a moment ago.
Emmanuel: What happens if the system produces more electricity than the house or the office dwelling actually uses.
Jonathan: Very [very] good question. So, at the moment is South Africa there’s only 1 or about 3 or 4 municipalities that allow for feedback into the grid and you get [you get] a credit in your account. There is a push now, Tshwane municipality have sort of passed it through legislation, so it will just take a bit of time and they are also going to allow for it. It [it] is a reality that it has to happen especially as our grid is under so much strain this would allow for energy to becoming back to them, even if we not getting paid the full amount you’ll still get a credit. All over the world they allow for feedback into the grid, however in places where it’s not allowed yet we do put something on called a grid tie limiter which just prevents that feedback for now but in the near future hopefully all the municipalities will follow suit.
Emmanuel: Ok so there is uptake? I take it when you started your business [inaudible] that there were no municipalities buying back?
Emmanuel: Now there are. OK
Emmanuel: OK so there is a growth but slow. [uh] are you there Jonathan?
Jonathan: I’m here yes [yes].
Emmanuel: The other question is, what are your most popular solutions?
Jonathan: Our most popular solutions right now I would say in the domestic market would be our hybrid solution, as I mentioned it has solar panels as well as a battery bank so you are getting the best of both worlds [um] we set up these systems in such a way that we try get people say 80-90% off grid with them.
Jonathan: So, it can be quiet a big saving to a lot of people. On the commercial side its definitely our grid tied system where companies are now looking at a 3-year payback on their system.
Emmanuel: As quick as that? Wow.
Jonathan: As quick as that yes. Top
Emmanuel: [inaudible] OK righty [um] Is there maybe anything else you want to cover? I’m drawing towards the end of…
End of Transcript Top