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The key to alternative power is batteries and inverters. With storage, you can run a generator for an hour or two, pump water, run A/C, etc. and store the extra for lights, refrigeration, and furnace.
Solar needs a generator for weather related periods. Propane doesn't get refilled if SHTF. The supply chain is too long and complex.
Gasifiers are necessary for long duration SHTF to TEOTWAWKI problems.
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Got all that my brother. We've been producing our own power since late 1999. Currently 5KW solar, running 28 L16's in our battery bank. Have another 3KW of solar to install next spring.
It's all about options. I'm sitting amongst several hundred acres of woods..... And I'm in the south. We only use 1/2 cord to 2 cords of wood a winter for heat for the three stoves in the main house. Usually have 5-7 years of wood split and stacked amongst sheds in various states of drying.
Just considering various options/things I had not considered.
Ethanol- lots of corn correct? Unless you were talking about switchgrass and I missed it.
Corn= lots of nitrogen, at least down here in our soils. As an experiment one year I grew a small stand of corn via ONLY organic inputs. A 30x50 stand required ALL the manure we could scrounge from our rabbits, chickens and goats put on regularly to make that stand. We usually use commercial fertilizer if we grow corn down here. It is NOT deep Midwest soil that is super good. It's sand without a lot of OM.
So ethanol might be an option, but a highly strenuous one as I've grown corn here and realize how much N input it takes to get a good stand.