The backlog of hooking variable load sources to the US electric grid is very long, often requires retrofitting the grid, and cost is borne by the generator.
It's not as simple as having the capacity because power is used the instant it's produced.
It's not as simple as having the capacity because power is used the instant it's produced.
Today: - Hydrostor just signed a near $1 Billion contract to build their first underground facility in California using advanced compressed air with water to help efficiency. See also: Green Gravity, Gravitricity, Terrament, Renewell, RheEnergise, and more.
Variable load sources often change transmission requirements on existing lines because there can be power draw increase between A and B where previous there was less generation at A.