To be honest food is way more important than power, it's just that as an electronics engineer I like the techo stuff and so have concentrated on that. I've never been the slightest bit interested in growing stuff but at least that is slowly changing and I'm sure I will get real keen after seeing the first few radishes grow.
I didn't know how to grow anything 5 yrs ago, but am getting better each year. The best advice I can give is go see and talk with others in your area to see what grows well there. If it's a native plant you'll have a lot more success. I planted a lot of super sweet peach trees here. They taste amazing, but need a lot of pampering. Each year I loose one or two. The apples though are tough, and thrive without doing anything other than the occasional watering. So far I've learned muscadine grapes, apples, pears, blueberries, strawberries, kale, carrots, okra, bell peppers, lettuce, and a few others do really well here. Try to start with what will do well in your climate and soil.
Right now we have 1700W of panels on the roof of the truck (RV), but we are parked in a spot that gets shaded a lot so it's not really cutting it with our current usage. But when out in the sun that's plenty.
I was going to try and get 1200 kW this spring. I don't know if I'll get all 3 400w panels pkgs, but that's the goal. I'm a big do it yourselfer, and even though I have never worked on solar before will figure it out for the install.
For 7 years we lived quite happily with 500W, but we only had a single fridge and were VERY conscious of our usage, everything not being used was turned off at the wall. We have got slack lately and just leave everything on standby, plus we are running three fridges.
I have lived quite comfortably out of a 4x4 for months with just 240w of solar. That could be extended indefinitely.
I've camped a lot in campers and am pretty good at conserving water and power, the wife however
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I am now planning a new system for the container house, that may be up to 3000W, or for redundancy I may still use the truck's existing system and add another separate system of about 1500w.
Our neighbours are about to install a new system, they have been assured that 2000w will do all they need and I concur.
Other friends have just installed a 5000w system, they did that because they can (he does the work himself so it only cost about $15k) and they just wanted a system that was so large they never even thought about what they used.
Other friends have a 10,000w system, I built my current motorhome there, including all the cutting, welding, etc you can imagine.
NOTE:
None of the above includes air conditioning, nice as it is I've never had AC and never seen the need for AC. If you do need it then I'm not sure that even a 10,000w system will do the job. Certainly those friends with the 10kw system have to use a generator if they want to fire up the AC.
Yeah, everything I've read has talked about the ac being the holy grail of solar. A man I met has 25kw, with batteries and it runs it all. It sounds great but I think he has 30 thousand us in it. That's a long time to recoup your investment.
What the heck is a solar-powered generator? Seems like a contradiction in terms. Do you have a link?