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.

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