On the other hand, lighting accounts for about 15% of the typical dwellings electrical usage. Installing fairly inexpensive solar panels ($500) to charge a bank of standard car batteries ($50 to $500), a home owner would be able to run low voltage lights or LEDs for lighting. The lights would require a separate system of low voltage wiring, switches and fixtures (less than $1000). This simple system could be installed on every house (most) with a southern exposure by the typical do-it-yourselfer. The number of batteries would depend upon usage needed. The technology exists on the shelf here in the US. If the government were serious about reducing doemstic usage, they would subsidize the installation of such systems throughout the country, instead of the mega wind and solar farms as they are doing now. The on-site solar system would reduce residential electrical use by about 15% without the huge investment in supply lines and infrastructure that the wind and solar farms require. The numbers of people who would be employed in this market would number in the hundreds of thousands. Obviously, major electrical appliance like TVs, dishwashers, washing machines, stoves, refrigerators and furnaces would still require power from the grid.