Solar energy is a green energy source because it is a renewable and it does not cause any harm to the environment. This is achieved by converting the suns rays into electricity with the help of solar cells.
There are three basic approaches how we can use this form of green energy source namely passive, active and by using photovoltaic cells.
When we refer to passive solar energy, nothing is converted. What happens is the buildings design helps avoid heat loss and gets the most out of day lighting.
Such a technique can also be used in homes because studies have shown that this can reduce the heating requirements by as much as 80% with minimal cost. This means you dont have to turn on the air condition or heater that often and if everyone does that, we dont consume that much electricity which we get from non-renewable resources.
The second approach which is active solar energy is the first way of converting sunlight into heat. You should know that there are certain limits to this one and all it can do is make sure you have hot water.
The third approach is the big scale version and it can power an office or an entire home. This is done with the...