underwater "windmill" power better than on land

[origami_itto]

You guys should check out the Pellman wheel
It can produce enough energy from a slow moving stream to power a whole house
The Rainbow Power company from Australias Hippy capital Nimbin has been selling them world wide for over 30 years

Pelton wheel

https://en.wikipedia.org/wiki/Pelton_wheel#Applications

[everything]

fwiw, I have solar panels to charge-recharge an acid cell power supply. It'd run my laptop, charge my phone, run a fan, and light some lights. I have water filters, too. But, I don't pretend to be off the grid. In cities, the main problem is keeping the refrigerators in the food stores working.

def way ahead of me. the only "greener" thing i did recently was add some box fans that cool down the house a little with less power to hopefully run the AC a little less. converting my bike to e-bike, which will theoretically be "greener" if i use it instead of my car for a short errand.