Why Is Hydroelectricity So Green, and yet Unfashionable?

Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by Manuel_D on Thursday October 27, 2022 @08:56PM (#33366148)

Such hydrogen storage facilities already exist, actually. But the hydrogen the store is produced via steam reformation which emits carbon. The big issue with hydrogen storage cheaply producing hydrogen without producing CO2.

[ Parent | on HN ]

Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by pencilguin on Friday October 28, 2022 @01:24AM (#33367992)

There is on fact no such issue because literally no one is even considering producing hydrogen for energy storage in that way.

[ Parent | on HN ]

Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by Manuel_D on Friday October 28, 2022 @02:06PM (#33375022)

Then how is hydrogen going to be stored? Electrolysis remains either inefficient or expensive.

[ Parent | on HN ]

Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by pencilguin on Friday October 28, 2022 @02:41PM (#33375604)

Storage method has exactly nothing to do with production method.

Electrolysis efficiency and expense are entirely sufficient to requirements.

[ Parent | on HN ]

Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by Schroedingersat on Friday October 28, 2022 @11:20PM (#33380669)

Inefficiency doesn't matter if you are storing curtailed energy.

If it makes more financial sense and uses less resources to overbuild solar 3x and curtail 60% of the energy than paying for fuel, then you have 2 units of energy you have already paid for spread out over 6-8hrs/day.

As long as using your $300/kw electrolyser at reduced duty cycle is cheaper and less resource intensive than mining and shipping gas, you do it.

[ Parent | on HN ]