Solar PV (photovoltaic) systems generate electricity when sunlight falls on solar panels which are normally made of crystalline silicon and mounted on the roof of the home or other building. Although a great deal of energy is consumed in the manufacture of PV systems, one installed they should continue to produce virtually free electricity for up to 20 years. - Description added by: www.microchap.info + Add your own description
Energy efficient low carbon lighting solutions such as energy saving light bulbs and daylighting system are widely available and require significantly less energy than conventional technologies. Explore the low carbon lighting solutions on this page, and lower your lighting footprint without delay! - Description added by: David Lockie + Add your own description
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