hydro

This is followed by low-marginal-cost plants like hydro dams.

The advantage is you can use things like solar, hydro or geothermal energy to heat the system.

Pumped hydro storage is very efficient, but sites are limited.

With "free" electricity it's fairly easy to split water into hydrogen and oxygen.

It's also a misconception to equate huge-reservoir hydro with all hydro.

We have run of river hydroelectric in the states that diverts some water via penstock, as well as canal-based systems and those that utilize Army Corp dams.

This man seems to have working practical knowledge of electronics, hydro-engineering, welding, can make his own transformers, has a sense of humor, etc.

Another way to do arbitrage is to build two reservoirs and pump water to the higher one at night when power is cheap and then generate hydro power during the day when power is expensive [1].

The problems could be solved faster on bare metal with server-class hardware, concentrated in data centers built where energy is the cheapest, usually because there's solar/hydro/wind generated nearby.

|||| < stream\n vvvv\n +--------+\n | man |\n | made | < grate + pipe to divert % of flow\n | dam +>>>-----------\\\n +--------+ \\ < going downhill to increase pressure\n ||| +--\\------+\n ||| | hydro | --> output power + \n ||| < main flow |generator| control infrastructure\n ||| +---------+\n ||| +\n vvv+ <----------------+ < flow returns to main stream\n vvvv

The Norwegians have incredibly high head, phenomenally efficient hydro in the mountains with minimal environmental impact.