In Sustainable Energy – without the hot air UK physicist David MacKay presents plausible back-of-the-envelope estimates of the scales of action needed under various strategies for reduction of global carbon fuel combustion. The numbers he uses are easily checked and his analysis can be re-run with revised parameters if needed. Only when a significant fraction of humanity is capable of actually doing both those things will we have any chance of making the right decisions.
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We were considering purchasing a number of solar power panels for our home recently. The only issue was the price tag. The lowest priced solar system we identified was about ten thousand bucks. It might have taken us several years to make back that amount. Anyway, we stumbled across these recommendations for making your own solar panel systems. We ended up going that way. It saved us a great deal of cash, and the free, efficient energy is fantastic! 🙂 We run a number of of our kitchen appliances off of this source of power.