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>A key is using hydrogen for the last 10% or so Where is this 10% coming from? Solar doesn't work at all between sundown and sunrise. Similarly wind also doesn
by macspoofing 6y ago
>A key is using hydrogen for the last 10% or so
Where is this 10% coming from? Solar doesn't work at all between sundown and sunrise. Similarly wind also doesn't align with energy demand either.
Hydrogen isn't the answer either. It is incredibly inefficient to produce via electrolysis, meaning you would have to massively over-provison your collectors.
>This is not currently competitive with fossil fuel, but then neither is nuclear.
Why are you focusing on price? Renewables don't work. They could be free and you'd still be building natural gas plants. This why no nation is actually powered by renewables. When an article claims a nation has reached 100% renewable energy it's always geothermal or hydro - which require the right geography.
- pfdietz 6y agoThe last 10% comes from rare dark/calm periods. I requires a storage technology beyond mere diurnal storage (for which there are plenty of options and where continued cost decline will almost certainly address your negativity.) > Why are you focusing on price? Renewables don't work. They could be free and you'd still be building natural gas plants. If price is no object, then obviously renewables can be made to work anywhere. After all, one could dump heat into underground thermal stores and use that as artificial geothermal. The thermal time constant for a several hundred meter chunk of bedrock is measured in centuries.