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danielravennest t1_je6n788 wrote

"Other Energy Storage" i.e not pumped hydro, which has been around for decades, reached nearly 9 GW this January. That's nearly double what it was 12 months earlier. To the extent regular hydro is available, it can act as storage by saving the water behind the dam when other renewables are running. The US also has nuclear supplying around 19% of utility power.

The first iron-air (reversible rust) battery plant has started construction in West Virginia. I ron is much cheaper than lithium, but also much heavier. So these will be stationary batteries. The first version is designed for 100 hour run time, vs. about 4 hours for Lithium-ion.

It will still take work to break our fossil fuel addiction, but there are solutions coming along in the near future.