A Solar Photovoltaic (PV) Panel is made up of silicon cells, prepared in such a way that when the sun’s rays pass over them they become ‘agitated’ creating an electric charge. This electricity is generated in the form of direct current (DC) generally the electricity is then converted to alternative current (AC) via an inverter to make it compatible with the electricity supply. Alternatively it can be stored as DC in a battery for use later.
Contrary to popular belief, a Photovoltaic system does not necessarily need bright sunlight in order to operate successfully; a correctly engineered system will continue to generate electricity even on cloudy days.
The first practical application of solar photovoltaic’s was to power orbiting satellites and other spacecraft, but today solar photovoltaic systems are becoming far more main-stream and can be used for any number of exciting applications. While traditionally most systems were grid-connected whereby excess electricity was fed onto the national grid, off-grid or hybrid systems are becoming more popular. There are a number of reasons for this; on the most basic level off-grid battery storage systems allow communities where there is no grid to have access to electricity. There has also been a trend in the developed world towards on-site storage. This is because electricity prices are increasing to such an extent that in many cases electricity generated by PV panels and stored on site is cheaper than the electricity that you can buy from the grid. Also many of the grids are in need of upgrading and therefore unable to deal with demand as a result we are facing the real threat of grid black-outs in the not too distant future.
Gilroy’s Green Energy LTD solar PV products can be used to provide reliable clean power in any number of challenging environments.