I read about this but did not believe it. ERCOT, which manages the Texas Electric Grid, is looking to ban batteries from the grid. My understanding is that batteries and similar storage are the future. They store power from renewables (currently wind and solar) to use when these renewables aren’t producing. They also have the effect of smoothing the crazy gyrations in pricing on the grid. This seems to be the core of the “problem”.
Today when the sun goes down, and before the evening wind kicks in, there is a “duck bill” lull in renewable energy generation. In the Texas system, this leads to an increase in wholesale electricity prices, which until recently was exclusively served by oil gas and coal. This summer, with capacity tight, I have watched rates go from a few tens of dollars to hundreds of even thousands of dollars per kilowatt hour. A huge bonanza for legacy “thermal” power generation.
Today batteries are starting to supply power during the duck bill hours, usually from power stored earlier in the day when it was plentiful and cheap. What’s not to like? Well, nothing, unless you own a gas or coal fired plant. Batteries are said to pay for themselves in 18 months, making them a great investment and encouraging rapid adoption. They are now accounting for a measurable part of the power on the grid, especially in the early evenings.
I spent my career in tech. I’ve seen this sort of “disruption” many times. I see “thermal” electric generation technology as dead men walking. But these people have enormous political power in Texas. Will cleaner, cheaper, more reliable renewable power displace “thermal”? I think it is inevitable. The only question is how much pain will be inflicted on Texas consumers as this dying portion of the energy industry is propped up politically.
A good article from the Texas Energy and Power Newsletter.













