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I'd like to know more about "damless hydro". I keep hearing about water turbines used in conjunction with tidal currents or offshore wavepower. Some of the numb
by Tenhundfeld 9y ago
I'd like to know more about "damless hydro". I keep hearing about water turbines used in conjunction with tidal currents or offshore wavepower. Some of the numbers they throw around seem promising, e.g., $0.055/kWh, which is ~1/4 of nuclear or 1/6 of coal.
But I have no idea where those ideas are in their maturity. I agree that dam hydro can have some nasty consequences, even if it does look super attractive at first.
- sandworm101 9y agoTidal/wave power must deal with corrosion issues. Moving metal parts + saltwater + electricity = headaches. There is also "micro-hydro" that replaces the dam with a long pipe, no inundation but effectively diverts a portion of a river into a pipe. There are ancient ways to reliably pull energy from tides but they involve very location-specific constructions. https://en.wikipedia.org/wiki/Tide_mill https://en.wikipedia.org/wiki/Tide_mill