But you have to remember one thing. $3000.00 is probably the price for one panel and it takes several across a rooftop. (I recently saw on TV (This Old House)that they are down to $900.00 per panel.) So usually the price for this is in the $20-30,000 range for a home. Sometimes more. I am all for solar energy, more fuel efficient cars, etc. so don't get me wrong. But the first thing we are going to have to do is lower the population in the world. I believe the government should tax people for their offspring instead of giving rebates for dependent children. This should discourage over population and create a decrease in cars, fuel, pollution, etc. In my lifetime the world population has grown from 2 billion to 9 billion people. There's your problem. Another thing people are going to have to do is learn to live in a cooler home in the winter and a warmer home in the summer. People (usually women) see snow outside and turn the thermostat up to 75*. Yet in the summer people (usually women) need to have their home temperature at 65*. They need to turn that around and live in homes that are 55-60* in the winter and 75-80* in the summer. I do. I ran my window AC two days all last summer with a window fan in the bedroom the rest of the time. My upstairs (ground level) averaged about 50* from November to the present. I spend about 75% of the time in my family room in the basement (underground). It's cool in the summer and easier to warm (to about 65*) in the winter. My fuel bills from November to present have totaled less than $150.00 (total)in kerosene (plus about $90.00 a month in electric) for space heaters. My electric bills in the summer are around $60.00. About $30.00 per month of that is for a hot water heater so I plan to change that. People dress warmer and spend the day outside when it is 50-55*. So why can't they do that INSIDE their homes in the winter? So, there are several ways people can help. They just don't want to sacrifice. If they did, just think of all the more money they would have for guns!