More ideas from Seb
Zoetrope - A DIY Wind Turbine that is now Open Source (From Earth Techling - A great blog on green tech!)

Build Your Own Vertical-Axis Wind Turbine On The Cheap - Didn't realize vertical wind turbines existed. The scale of this one and the fact that it supposedly doesn't require gale force winds to produce power makes it definitely worth looking into.

How to make "pico-hydroelectric" power - doesn't require a lot of water and generates enough power for at least one household.

How to make "pico-hydroelectric" power - doesn't require a lot of water and generates enough power for at least one household. I was thinking something like this in-line with your water inlet system since it is already under pressure.