As new concepts and theories for residential energy production emerge, many sceptics voice their opinions claiming these new ideas simply don’t life up to the hype. Solar power is one such idea which has generated a considerable amount of cynicism.

With this article I aim to shed some light on some of the common misconceptions regarding the use of solar roof panels as a viable means of residential energy production.

“Solar panels will take too long to pay for themselves”

Year after year we are seeing our energy bills going up by ever increasing percentages. The promise of cheaper fuel bills from nuclear power never came to fruition so the need to consider renewable energy sources such as solar power is now a viable alternative. In the current economic climate, investment in cheaper bills for the future is a sound financial idea as remaining reliant on non-renewable energy sources such as coal, gas and oil can only become more expensive as they become scarcer and therefore more expensive.

On average UK homes consume around 3000 units of electricity each year and typical solar energy panels will produce around 1500 units each year (estimated average under UK conditions) which is half of the average yearly consumption. It’s difficult to state exactly how long it would take for residential solar panels to pay for themselves as many variables are involved. These variables include the initial cost of each solar panel, the type of installation plus the cost of installing the system, the price your electricity supplier charges and whether or not your energy supplier will pay you for any extra units which are fed back in to the grid. It is also worth checking with your local council as many grants are available which could cover up to 50% of the cost of installing home solar panels. What we do know is that non-renewable energy prices will continue to rise. It is no longer a question of ‘can I afford solar panels?’ It’s more a question of ‘can I afford to not have solar panels?’

“Britain is not sunny enough”

This is a common false statement regarding the use of solar panels in the UK. Most people assume solar energy panels need direct sunlight in order to function. In actual fact they only require light from any source rather than direct sunlight as they absorb the electromagnetic radiation found in photons. This means that a solar roof panel will even work at night by absorbing photons from star light and street lighting; however, this happens on such a minimal scale you’d never notice. The output of each solar panel is considerably higher on sunnier days as strength of light (or the shear amount of photons) is a major factor, as is the angle the solar panel to the sun.

“Solar panels are useless during the short winter days”

Although there is some truth to this statement, residential solar panels are far from useless during the winter months. The daylight hours are significantly shorter meaning each solar panel will generate less power over the course of a full day. The truth of the matter is that hour for hour; each solar energy panel is on average equally as efficient as it would be throughout the summer. Prior to the installation of solar panels one should consider how much sun light will be hitting their solar panels during the winter months. Your roof may be in the shadow of nearby trees or a chimney stack may reduce the efficiency of the solar panels by leaving all or part of the solar panel in permanent shade whilst the sun is lower in the sky.

“If I don’t generate enough solar power, I’ll have no electricity”

This simply is not the case. Your home will still be connected to the national grid, so anytime you need more electricity than the solar panels are providing, you’ll get it as normal from the mains. It is unlikely that a household will be able to produce 100% of it’s electricity as a result of installing solar roof panels as we have become far to reliant on electrical appliances. Saying that, it has been proven in the past that once a household begins generating its own electricity using solar panels, its occupants become far more conscious of the way in which they use it and day by day will use far less electricity.

“It takes more energy to manufacture a solar panel than it will ever put out”

The energy payback of solar panels varies depending on which type of solar panel is fitted. Currently, the microcrystalline-silicon solar panels have an estimated energy payback of less than 4 years where as the ‘thin-film’ solar panels have an energy payback of around 3 years. Future developments in renewable solar energy coupled with increased production are expected to halve the energy payback time of both microcrystalline-silicon PV solar panels and thin-film solar panels.

“Modern solar panels are still not efficient”

Solar energy has come along leaps and bounds since the development in the production of the first practical solar cells in the 1950’s. These had a sunlight energy conversion efficiency of around 6%. By the late 1980’s scientists had developed solar cells with an efficiency of 17%. By 2000 solar cells had an efficiency of 24%, rising to 26% in 2002, 28% in 2005 and 30% by 2007. Increased efficiency coupled with lower production costs means residential solar energy systems are cheaper and more efficient than ever before.

You may ask yourself one question regarding the above figures, “If solar panels are getting more efficient and cheaper year after year, maybe I should wait a few more years?” Although there is some logic to this idea, the truth of the matter is waiting a few extra years could well prove to be a false economy. At the moment the British government are offering a variety of grants to financially assist those seeking to run a greener home, including the installation of domestic solar panels which could save you up to 50% of the installation costs. Government grants like this may not be available a few years down the line.

By: PXR5

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As a homeowner, you may be using renewable energy sources. Let’s look at a few of these important, powerful sources.

If you use solar powered lights to brighten your walkway, a solar cover on your swimming pool or hang your clothes out to dry, you are already making use of the sun’s renewable energy. There are many other renewable energy home options you can take advantage of, and by doing so, help preserve our environment.

The most practical of renewable energy options for the home consist of space heating and domestic hot water. This is over 50% of a household’s energy usage. In using renewable energy we can experience cost saving benefits.

Perhaps the best way to take advantage of renewable energy home options is when designing a new house. A southern wall taking advantage of an appropriate amount of windows can take full use of the low sun in the winter. Adding a roof overhang over these windows allow the higher summer sun to be blocked. Also, on a cool day you can open your windows to let a breeze cool off the house and make use of wind energy. You have achieved adding heat in the winter and coolness in the summer, thereby lowering your heating and cooling costs naturally. This is called passive solar heating since it is integrated with no extra costs. You can also do day lighting by taking full advantage of the sunlight during the day to take care of your daytime lighting needs.

Wood stoves can also be advantageous, if using only dead wood, diseased wood or small pellets made from wood chips, crop waste and other organic material for burning. This is a renewable source of heat through the use of space heating. Modern wood burning stoves are highly efficient, making it a more practical option.

A homeowner can also utilize active solar heating. A solar water heater can use renewable solar energy to heat water for a house. This would use solar collector panels placed on a roof. Water runs through pipes under these panels and is heated by the sun. The water travels to a water tank in your home for your use. Electricity can also be produced for a home using the photovoltaic technology. This runs on the same idea as a solar calculator. Solar electricity is ideal for rural homes where it would be difficult to run an electric line to.

Geothermal heat pumps use the heat from the Earth to move heat from one area to another. This system uses a series of underground pipes to move a heat exchange fluid. The heat pump moves this fluid, heated from the earth and transfers it to buildings for use. Initial installation costs are much the same as traditional heating systems, but operational costs are lower.

If you live in a windy part of the country and have quite a bit of land, wind can power a wind turbine to produce electricity for your household. But your location must be ideal to catch wind and you must be able to capture a certain amount for this to work.

These are some home options for renewable energy sources. By trying to utilize some of them we are preparing for our future by using clean energy that does not affect air quality or harm the environment.

Today kids are learning about all sorts of things especially with modern technology. We are moving ahead and it is good to teach them about solar power, which is a resource that will be part of their future, depending on how much care is spent on it now. Wherever you see the sun shines, or you can feel any warmth or see it, you can have solar power. This kind of power to used for heating and lighting in business, homes and schools; for heating water, and it also a way to produce energy. By teaching kids how solar power actually works and how we should use it wisely will help to protect the future for us all.

Children need to learn why we need and alternative to the energy we use today and the effects and damage it has had on the world’s environment. It is important for them to understand why we need to produce a safer energy source. Electricity is currently a non-rewable resource, as we gain nothing from using it. Once this power runs out we will need to find an alternative source of power supply. Scientists are always busy looking at new resources for energy production, so that when we eventually do run out of one source, there is another in reserve to replace it, so that we don’t miss out.

Until then, another resource needs to be found, to ensure that is ready for when the switch over is necessary. We need to preserve what is left at the moment, so that in the near future we can immediately switch to a new energy resource with no problems. Much of energy production that we have is currently damaging and so harms the environment. By polluting the air, the sun is under threat and we run the risk of losing it as a natural resource. This alternative resource is vitally important, so by teaching our kids they can join our efforts to save solar power for the future.

Solar power generates energy by using the natural resources around us, and there are man made sources so that the solar power can be attracted to these sources and saved. We need to find a way for this be to cost effective by using solar sources that are cheap enough to provide us with the solar power that is needed. The average home would benefit greatly by switching over to solar power, and it is easy to set up, saving on the need for power lines. If your home is being built from scratch, by installing solar power you can begin to generate electricity in your home straightaway, to heat your water supply, and you could even sell your surplus energy for use elsewhere. You would be putting money back in your pocket. There are huge benefits to be gained by saving on producing a resource by the slow use of a natural resource. Children will learn how to save energy and how to plan for their safe future.

Conserving solar power by everyone of all ages and the sooner it starts, the more the future will benefit. Teaching kids is the way forward in order to save our energy, as we need a solution on how we can save on solar power in the future. Currently power is linked to each individual house for heating, our water supply and some other necessities; by being able to save in larger quantities we hope one day to cut out the need for so power lines that we see everywhere running through fields, our streets and backyards which will be replaced by solar panels and boxes instead.