Dabbrook Power Systems  are distributors and installers of  BP Solar modules and associated products and are approved to install systems under the government grant system.   Solar modules generate electricity from the sun, i.e. they convert radiant energy into an electrical current. This can then be used to charge batteries, as in stand alone systems or by connecting a number of solar modules as an array into a piece of equipment called an inverter, can be directly connected into the mains electrical supply into the property.   Stand alone systems are generally used for remote off grid properties, stables, holiday homes, beach huts etc. and are not generally eligible for grants.   Grid connected systems are used in properties that have a mains supply, but where the occupier wishes to contribute to the battle against greenhouse gasses, by reducing the demand for electrical energy produced by burning oil or coal. During the hours of daylight the solar array converts radiant energy into electrical energy which is passed to the DC/AC inverter which creates 240V 50Hz and synchronises it with the mains supply. This locally generated power is connected to the buildings consumer unit and at times when power demand is modest, will supply power to the household appliances. At times of greater demand or darkness the balance of power is drawn from the grid.   Connection of such a system requires approval from the local electricity supply company.   It should be noted that for specific safety reasons the inverter automatically switches off if the mains fails, this is not therefore a standby power system.   So what is the cost?   Systems are specific for each application and costs will vary depending on size of array, location, etc. but as a guide we offer the following:   A 1kWp system ( 1kWp stands for one kilowatt peak power ) would comprise of the following:   12 off BP585 modules 1 off inverter 1 set of fixing brackets 1 lot of cable and sundries 1 system monitor installation   If the system price is estimated at £8000.00 excluding VAT   A grant of £3000 per kWp is available and VAT is only 5% on these systems, therefore the price that you pay will be approximately £5400.00   Quotations are available on request.   So will I have free electricity?   As a rough guide, a PV array mounted on a South facing roof which is not shaded, will generate approximately 120 units of electricity (kWh) per square metre per year.   A 1kWp system will have an area of approximately 7 square meters, which would produce in the region of 800 kWh per annum. ( units per annum)   It will also save in the region of 300kg of carbon dioxide going into the atmosphere per year.   If you would like to discuss this in more detail please do not hesitate to call us.   A Typical 8 Module Roof  Mounted PV System