4 ms·
> However, saying that renewables are the cause of this is the same as saying that nuclear is the cause of Chernobyl. Nuclear plants don't inherently melt down
by ldp01 8y ago
> However, saying that renewables are the cause of this is the same as saying that nuclear is the cause of Chernobyl. Nuclear plants don't inherently melt down if they are properly designed and operated and renewables don't inherently cause load-shedding if they are integrated to a properly planned and operated bulk power system.
Isn't this just juggling semantics? Nuclear is very much a necessary condition for nuclear meltdown. Removing nuclear power is a foolproof option to avoid nuclear meltdown.
Likewise displacing dispatchable generation with renewables enables the conditions where we can get these super high spot prices. To guarantee supply during peak load you need a lot of redundant dispatchable generation sitting around gathering dust until the $14500 day. On that day it needs to pay for itself, hence $14500 per megawatt hour.
EDIT: Oh wait, I'm a dummy who didn't read your post correctly. I agree with your comments about the market needing to correctly price reliability of supply. In WA we have a capacity market for this reason.
- eigenvector 8y agoThere are a lot of economic scenarios for a 'peaker' plant that don't necessarily involve it having to recover its full capital cost in just a few days of operation. Often these are plants that have been retired from the energy market due to high operating costs, but can still start up and run for a few hours well below the $1000/MWh level because the owner has already recovered their cap-ex over many years of operation. They may have other revenue streams that cover their operating costs, like black-start services, and operating reserve is just the cherry on top.
- antt 8y agoThis works well for the current 30 minute market. At 5 minutes there are no non-battery plants, other than hydro, which can start up fast enough to provide power to the market.
- eigenvector 8y agoTrue for cold start, but gas plants can ramp in the 5 minute window if they are already running. But the market conditions would have to such that it makes economic sense for them to be in that operating condition.
- antt 8y agoRight and it takes them five minutes to ramp down, and the price market window will be 5 minutes. Which means they will have to bet on the price being high the next windiw too. Which means higher prices sustained longer because gas units won't be quick enough any more.
- eigenvector 8y agoIf they're ramping as part of a system reliability service, then should be doing it under automatic generation control, not betting on the energy market, and they would have committed a certain amount of up and down regulation some hours in advance. The cost question is whether it makes sense for them to bid for that reliability service to begin with. Which goes back to my argument that this is to a large extent about market design and not technology.