lango
Member
I hate to break up this debate on battery peaker plants, but the US Supreme Court has just upheld FERC Order 745. This pretty much renders the capital cost of any peaker facility irrelevant. So gas versus battery peaker is pretty much just an academic exercise.
Order 745 allows retail customers to be compensated for participation in DR (demand response) programs with with compensation equivalent to wholesale prices. Thus whenspot prices exceed retail rates, customers with their own means to cut consumption of grid supplied power (whether through reducing total consumption or consumption net of behind-the-meter assets such as generators, solar, or batteries) may earn spot price level compensation. Keep in mind that commercial and industrial retail customers pay rates lower than residential. Particularly industrial rates are just a few cents higher than wholesale. Thus, tapping the ability of ratepayers to self-consume at times of peak demand for power will directly compete with utility scale peak capacity.
Why does this render capital costs moot? Retail customers invest in their own behind-the-meter energy resources for multiple purposes. If you are a data center that needs extremely high backup reliability, you have justified critical investment in batteries and generators for that purpose. You welcome the opportunity to participate in DR not so that it justifies your capital investment, but merely because it generates incremental revenue to offset a portion of that cost. So the level at which you participate depends on your marginal cost of curtailing grid consumption.Thus, you care about the consumption of cycle life on your battery and the cost of recharging the battery, but you do not care about all the other capital costs of installation.
So through these programs, energy storage will offered to the grid at pretty close to the marginal cost of batteries. Utilities will find that the simply need far less stand by capacity, so standby fees to peaker plants will plummet, and the least efficient peaker plants will be retired. So at this point I see little call for new peaker capacity whether natural gas or batteries. The good news for batteries is that Order 745 provides myriad behind-the-meter opportunities for batteries. I believe this will lead to a much more dynamic market for Tesla Energy.
Very interesting... but a little hard to follow. I take the gist of it is that you are entitled to get money at the wholesale rate if you produce electricity yourself? Or if you can offset consumption with your own stored energy?
Is wholesale price the same as spot price? And what is retail rate?
What do you mean with "capital cost of any peaker facility irrelevant"? Irrelevant in what way?
"Thus, tapping the ability of ratepayers to self-consume at times of peak demand for power will directly compete with utility scale peak capacity." Care to explain this
"Why does this render capital costs moot?"
Capital costs are never moot, they can only be moot in regards to a certain context.
"So through these programs, energy storage will offered to the grid at pretty close to the marginal cost of battries." The marginal cost of batteries is what the battery manufacturers charge for them, which is what will be offered to the grid, so I don't really understand what you are saying here.
Last edited: