Emergency electricity is technologically, economically, and practically trivial. You don't need to know how to build lightbulbs, batteris, PV cells... from scratch. They are all readily available for affordable prices as mass commodity products. If you get them now before the fertilizer really hits the ventilation system (which is as good a description of the greenhouse effect as any other, at least for me). If you also use them in your daily life, that will be another infinitesimal drop out of the flood of destruction and just might provide some personal security for yourself.
A solar light with battery charging capability for at least AA batteries costs about $10 retail. That provides you with the light, the power for a cell phone or radio, and recharging when the batteries run down. I’ve used mine for years now and will probably get quite a few more years of use out it.
This is also entry level electricity for the bottom billion.
I’ve advocated for decades that cities like mine could do a bulk order for their citizens and help supply at least one of our sister cities around the world who needs such a program as well through a buy one get one program — solar civil defense at home and solar development abroad.
Add bicycles chargers and power take-offs for all electric vehicles, micro-mobility e-bikes/scooters/et cetera and we have an incipient emergency grid if we plan it right.
Here’s one version of a Personal Power Set
http://solarray.blogspot.com/2018/09/personal-power-set.html
I recently suggested to a strategy session of the local Extinction Rebellion [XR] group that working on practical climate preparation can be an effective and positive protest using readily available ideas like this. I don’t know if they’ll do anything about it but we’ll see. I believe that we could change USAmerican energy policy and REALITY in one growing season if we went to the farmers’ markets every week throughout the growing season teaching people what they can already do and helping them do it. Here’s one version of that vision https://flourishfiction.substack.com/p/mister-franklins-folks
Preparing now for the next weather emergency or disaster, whatever that may be, is climate adaptation and can be good climate mitigation as well. Organizing people to get ready that way is something, I believe, XR, Fridays for the Future, 350.org, as well as the mainline environmental groups should be doing along with their street and legislative actions.
The Climate Mobilization Project is organizing around some of these practical climate preparation ideas this year
https://www.theclimatemobilization.org/organizing/
as is the People’s Response Network
prncoalition@gmail.com
There’s also Communities Responding to Extreme Weather
https://www.climatecrew.org
Lots of possibilities. In fact, we are surrounded by insurmountable opportunities [thanks, Pogo]. Who wants to go opportunity climbing?
"We remain alert so as not to get run down, but it turns out you only have to hop a few feet to one side and the whole huge machinery rolls by, not seeing you at all." Lew Welch