I'm only half kidding. I'm a bit of a prepper and I have lots of powerbanks and devices that charge from USB but besides idling my truck I really had no other way to charge any of them in case of a long-term power outage which seemed a bit of an oversight on my part.
Not like this solves the issue. 30 watts (under ideal conditions) isn't much but it's a start.
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I keep thinking about this. I can't justify solar when I live in a northern country and pay about $0.06 USD/kWh, but the value of resilience also counts.
😭 The per-kilowatt hour rider fees on top of my base rate per kWh are way more than that lol.
Im "lucky" enough to live in a region with abundant hydroelectric power. It's still cheaper to heat your home with natural gas here...air source heat pumps might get close when they work.