What you might want to do (OP) ...is evaluate your back-up power source (i.e. generator) and consider a dual fuel capability unit. Or buy (now) an inexpensive chinese LP carb that'll fit your generator ..if it's not dual fuel. If there *is* an EMP attack, or another attack, more than likely all your personal devices will still operate. But people are the wildcard. They will adopt a hoarding mentality, supply chains will likely be disrupted (for a while at least) ....and gasoline will may be difficult if not impossible to get, for your generator. Or you could end up waiting for hours to get your allotted 2 gallons of fuel. That's what happens in other countries (even here) during disasters. How long can you heat your house on 2 gal of gasoline in the winter?
Whereas, If you have an LP tank and a generator with a dual-fuel (LP carb) which can run on different fuels much longer, you build a bit of an energy buffer till things get sorted out. Gives you options. Diesel stores well, if you have diesel vehicles/generator. Even if there isn't an emp, anything that can disrupt the supply chain and cause hoarding, will gum-up one's plan.
And ensure your generator will operate your house furnace. Many modern furnaces with 'smart' controls and ECM blowers now require 'very clean' power to operate. Not like furnaces of the 90's that would run on any kind of power. I know a guy, a buddy, who updated his old furnaces with two new furnaces with ECM motors in his home. That's just about every furnace for the last 5-10+ years. Suddenly they wouldn't operate on his existing Northern generator. After some research with the furnace mfgr, turns out the Northern Generator did not produce clean enough power, and the furnace controller would shut down. He bought a Honda generator, which
does produce 'clean enough' power, and they would run fine on it. Same goes for variable speed AC compressors for those who live in super hot climates. You would be wise to sort that stuff out ahead of time. Size it to at least operate your water well.
And on the low-tech side, make sure you have a supply of toilet paper ...or a tall stack of musty Sears catalogs!
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