Living off grid in AK for a few years really opened my eyes re. how much crud is required to keep up even a halfway modern lifestyle. If you can stay on grid in your "tumbling" you can keep gear to a minimum. But that costs money and you have to find access points at RV parks, campgrounds and the like. Here are a few observations:

--DC power, which is what you get from small solar arrays and pedaling, is weak as water. Sorry to say it, but that's the fact of life. It will run lightbulbs just fine, esp. the new LED types. And it will cool a mini fridge down. But it doesn't have the juice needed for most modern tools and conveniences.

--DC power, if you want to "package" it and take it with you, requires a battery bank. Most of the folks out in the area I was in used marine batteries. These held quite a bit of juice but are amazingly huge. To run a small energy efficient cabin you need a sizable bank of them.

--AC power from the generators is wonderful, but very expensive. The diesels used to be better because the fuel was cheaper, but not so much anymore. I loved my little Honda gasoline generator, and it did run down to -40 f., but it was a pain in the #@$@ to get up at 3AM when it started to fail, knowing that unless I got out there and got it juiced it would freeze up almost within seconds and be impossible to start again. Also, even the "small" portable generators like the 2000E's I used are quite heavy for a bicycle.

--You're better off using old fashioned oil lamps and LED btty lamps for light and propane for heat. Propane weighs a LOT less per unit than gas or diesel, for obvious reasons. Most of the weight is in the steel container, and it's nowhere near as hard to tote as a gas can by bicycle. You can make one hell of a hot water heater with a large can of propane and a high pressure tripod, plus a nice big 5-15 gallon stew pot. I could boil 15 gallons of water in as many minutes with mine when I wanted to rig a bath. ANd I've never had a bath so hot or nice as the ones I made myself in the woods with the propane tripod and the old USN surplus stew pot. All of that would be easily bike portable with a trailer, and no electrical source can even come close to heating water that fast. Plus it's pretty easy to find places to refill propane tanks.

--You can also get portable propane heater/cookers that work quite well for boiling water and heating a small living space. The lower end ones wear out after about a winter of constant use, but they're only $40 or so. Don't get the Coleman ones. I had one turn into a flamethrower on me. They're designed for a few weeks of use at most.

--The old oil lamps like Deitz makes and Lehman's sells are amazingly useful. The fuel is pretty cheap and the wick burns very little. One of those can go in a trailer no problem and provide light without batteries or electricity. For more light a pressurized multi-fuel lamp is excellent. You can find them at military surplus places. Or a propane lamp, of course, with the mantels.

--The only time propane heaters will fail you is when it gets below -15 f. or so. Then they start to slow down and the whole radiant heat concept fails. Then you really need kerosene heaters, but frankly there's not much chance you'd be biking around in those temps unless you're doing some extreme sport.