@ DXR_13KE and Ramble Thanks! I saw alternative energy and knew I had to join up. I'll post a project log as soon as I get some more money .So far a have the bike, and the meters. I still need a good motor and charge controller, also still debating lead acid vs Lithium batteries. I got the inspiration from here http://www.make-digital.com/make/vol14/?pg=157. This is actually false. The power grid works of supply and demand, and a very fast control loop. If houses are using less power, the plants produce lower output. This is one of the advantages of coal fire plants. They can change their output faster than say, a wind mill farm. As long as the people with solar panels that wire their panels into the grid condition the power to the same standards (120V @ 60Hz and at same phase) then we're all golden. I mean, Power In = Power Out. Putting all our confidence in a single source of power has led to the problem we have now. We cannot stray away from fossil fuels even though we see the problems with them. Having a diversified energy solution is better for the technology to grow as well as being better for the people that use it. The Dyson Sphere is kinda cool. The total output of the sun 386 billion billion megawatts(386 exawatts) (http://www.nineplanets.org/sol.html). If you trust wikipedia, the total energy (as a planet) we used in 2005 was 15 terawatts. High altitude solar cells could do this without as much NASA math. Sorry if I'm being overly contradictory to anyone. I like big ideas, but I don't think we'll ever get enough backing for a project as big as a dyson sphere in our lifetimes. Once we can manage solar storms and wireless power transmission then it'll look more possible.