Well power deregulation has a lot of meanings, here in TX, in which is considered a "deregulated" market (because the producers, transmission and retails are di

Well power deregulation has a lot of meanings, here in TX, in which is considered a "deregulated" market (because the producers, transmission and retails are different orgs, and there is an energy market) normal generators have to file servicing/downtime requests, which can be rejected, when they won't be able to deliver their nameplate capacity. That is to assure there is sufficient grid/transmission capacity, they won't be offline during peak demand season, etc. So, power deregulation doesn't mean "free for all", because then they would just play games of assuring under supply and drive the price up, and the grid stability down. In the US it just generally means that there aren't integrated municipal power companies (which can sometimes still exist in deregulated environments). In TX case, the deregulated market has a market regulator called ERCOT. (edit: to expound on this more) An integrated power company generally is responsible for assuring it can meet the peak demands of its customers. Which means it builds the power plants, transmission lines, and gets paid directly by the consumers. This was much of the US a few decades back where individual co/orgs were responsible for their service areas. The grid is more a bunch of regional grids all synced, so while a certain amount of power could be drawn from one region to another it wasn't the normal mode of operation. Anyway, the point being that should such an org build wind/pv they would also be responsible for building/maintaining the backup generation. So the books balanced in the end, that isn't true when any rando can attach an intermittent source to the grid, and reap the benefits when it suits them.