Solar PV Panels. Not to be confused with Solar Thermal panels which produce hot water Electric Solar Panels or Solar Photo-Voltaic (PV) panels as they should be called generate electricity when exposed to sunlight. Unlike almost any other renewable energy system Solar PV systems do not have any moving parts and require virtually no maintenance. They do not generate any noise unlike a wind turbine. They are very easy to install and do not require any major modification to heating and plumbing systems as is the case with solar hot water systems and heat pumps. They are the ideal choice for existing homes and business premises. The more panels you have the more electricity will be produced.
Solar PV panels are available in a number of different types. These include Mono-crystalline and Poly-crystalline, Thin-film as well as Hybrid which is a combination of thin film and mono-crystalline. Panels are available in a number of different finishes and colours depending on the technology. The majority are either Mono-crystalline finished in black and white or Poly-crystalline finished in blue. Many of the systems fitted now use all black panels which on dark roofs are much more aesthetically pleasing. Hybrid panels do provide a higher output for a given area but are more expensive. We can also supply Solar PV tiles which replace roof tiles and provide a more aesthetically pleasing finish but are rather more expensive and provide a lower output when compared to other types of panel.
All black panels installed on Follaton House, Totnes
The majority of panels installed at the moment are either 250Wp or 200Wp rated so that a 4kWp system would have either 16 or 20 panels. The 200Wp panel is shorter and narrower than the 250Wp panel. The dimensions of the roof dictate what size panel would fit the best and the maximum size of the system.
The performance of Solar PV panels will reduce over time. To be MCS approved the output of Solar PV panels have to reduce by no more than 10% over 10 years and 20% over 25 years. When we provide an estimate of the savings and returns on any system we take in to account this performance reduction providing you with the most accurate estimate we can.
ImmerSUN Water Heater -
How much can you save? Don't let any spare electricity go to waste. Use any spare electricity you generate with your PV system and use electricity to heat your hot water for FREE.
The ImmerSUN works by measuring how much spare electricity your Solar PV system is generating and then uses this spare electricity to heat your hot water. Your Feed in Tariff and export payments will not be effected so this means that your water is being heated for free.
If your heating and hot water are fuelled by the same source then typically the cost of hot water would be about 10% of your energy bill. It is difficult to estimate savings as almost every household uses energy and hot water in different ways. The size of the Solar PV system and whether you use the electricity during the day is also variable. Typical savings for a family home with a 3.6kWp Solar PV system are shown below. Your savings could be more or less but we can discuss this with you.
Cost of heating hot water
Potential annual Savings with
Off peak electric
Based on 2012 fuel prices.
The cost of fitting an Immersun unit costs from °Ã495 inc vat.
In the majority of cases there are no other costs as long as you have a suitable hot water tank and immersion heater. We can check this out during a site visit.
Interested? Then call us to arrange a free no obligation survey