Interesting https://wolfstreet.com/2023/02/28/u-s-electricity-generation-by-source-in-2022-natural-gas-coal-nuclear-wind-hydro-solar-geothermal-biomass-petroleum/
Additions: 56.1 GW in total of new utility-scale electric-generating capacity is scheduled to be added to the power grid in 2023, the most since 2002, according to the EIA, for a net gain in capacity of 41.6 GW, the largest gains since 2003.
Of the 56.1 GW in capacity additions in 2023:
Solar: 29 GW
Natural gas: 7.8 GW
Wind: 7.5 GW
Nuclear: 2.2 GM (the two reactors at Vogtle plant in Georgia).
Battery storage: 9.5 GW, more than doubling the existing capacity of 8.8 GW! About three-quarters of the additions will be in Texas and California.
Battery storage isn’t a power generator per se, of course. But given its function of selling electricity when demand and prices are high (after buying when they’re low), it’s for now classified as power generation capacity. Maybe when it grows up, it will have its own category.
Battery storage has turned into a hot arbitrage opportunity, where storage facilities can buy electricity on the wholesale market when it’s cheap during times of the day with excess capacity, and sell it during the hours of peak pricing. Batteries help balance out loads and and work well in conjunction with wind and solar installations. They’re now turning into a big business opportunity.