Here are links to discussions on the FluWiki about alternative power sources.
Solar Power and Generators
Solar Power and Generators part 2
Solar Power and Generators part 3
Solar Power and Generators part 4
Solar Power and Generators part 5
Solar Power and Generators part 6
Solar Power and Generatorspart 7
Solar Power and Generators part 8
Solar Power and Generators part 9
Solar Power and Generators part 10