Diesel Generators (DG) are not just a highly expensive means of power generation but are also extremely damaging to the environment. And contrary to popular belief, the cost of energy from home inverters is also very high. The cost of power from a typical DG in a housing society is Rs. 17 – 18/ unit (kWh), while from a typical home inverter it is Rs. 14/ unit (kWh). In comparison, solar is a much cheaper and cleaner source of energy.