I've been using individual solar lights for years now, and use ambient light in the bathroom at night. Most rooms have solar lights, which can be used for activity for a short time, then low light. We have a motion usb light in the hall and getting some more. Multiple battery, wind up and chargeable lights.
I have a rocket stove that uses little fuel, and a stock of branches, other wood supply if needed and manual tools to cut down. It can boil a kettle so I can always have coffee. Or heat up soup or anything in a small pan. Also gas camp stoves, could do with more gas. I have flasks I can fill with boiling water, I want to get another.
I keep spare water, eldest keeps drinking it. I also save my milk jugs 4pts, and fill with water (it takes just over 4pts) to get hot water. this is for the garden, In a pinch I could use this, and have water sterilizing tablets. I also fill a flask with hot tap water for my second load of washing up later in the day.
I like to be creative, so have been making crochet blankets, shrugs, fingerless gloves and hats, I will continue to do this.
The old extension on our kitchen is bad. We were supposed to get it fixed this year, it didn't happen. In winter it's so cold. I have filled the cracks, bought insulation foil to stick to the ceiling (fire proof) to hopefully help.
We have an exercise bike in the lounge, when we get cold, 5-10 mins moment will help.
We have an induction hob, air fryer and slow cooker, and have stopped using our oven.
I have spoken to the kids, we have reduced the birthday budget and Christmas budget.
There is little we can do about it. We can always snuggle up under lots of blankets and be grateful that we have what we have.
To my toe they were immovable objects. 
