MCS Accredited and REAL Assurance Scheme Members

Mob: 07737 00 25 98
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Products we Install

We install solar microgeneration technology from leading manufacturers including:
- Sunny Boy Inverters from SMA Solar Technology
- Solar panels from Sanyo, Schott, Sharp and Hyundai

How Solar Power Works

Solar technology makes use of the photovoltaic effect exhibited by certain semiconductor materials, whereby exposing the material to light causes electricity to flow through it.

A solar panel is made of interconnected silicon cells that can use the photovoltaic effect to convert energy from the sun into Direct Current (DC) electricity. Solar panels are also referred to as solar modules because many silicon cells have been connected together to produce enough electricity output.

We give a simplified diagram of a typical solar generation system to the right. Note that solar panels still produce electricity on cloudy days because they depend on light intensity rather than direct sunlight or the heat of the sun. Solar panels will work best on a south-facing, sloping roof, and at least 10 square metres of roof is needed.

For domestic use, the Direct Current (DC) generated must be converted into the Alternating Current (AC) used for household electricity supplies. This is done by an Inverter.

A meter records how much solar energy has been generated and you are paid for this amount by your electricity supplier. Any excess electricity generated is automatically sold on to the National Grid and you receive an additional payment from your electricity supplier for this exported electricity. For full details of the payments you will receive, please see our Benefits page.

An average-sized solar panel installation of peak generation capacity 2 kWp (kilowatt peak) will generate 1,600 to 1,800 kWh (kilowatt hours) of electricity per year, enough for roughly a third of the average household's requirements.

See also our Glossary of Solar Power Terms.


Solar panel diagram

Photo of electricity pylon by Aaron Thomas / CC BY-SA 2.0


Mob: 07737 00 25 98  E-mail:
Registered Address: Global First Solar Ltd, 10 Furzefield Road, Blackheath, London, SE3 8TX
Company Reg No: 7612145

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