Honestly, I reach a very different conclusion. Comparing ERCOT to other grids (PJM or CALISO), ERCOT system has delivered very low prices and very high levels of renewable penetrations. PJM wastes billions of dollars a year in capacity payments to coal plants for no reason.
What you write, "The market in power should only exist to optimise" well, that is exactly what ERCOT does.
As for the disaster last week, that was a energy system failure as Texas regulations did not require the natural gas infrastructure to be winterized. Climate change creates more extreme weather events (in all directions but on average warmer) so polar air meant there wasn't enough methane ('natural gas') to power the turbines and heat.
So the issue is the winterization standard in the natural gas infrastructure, but nothing about the structure of the electrical market.
Certainly we need stronger resiliency standards! Events people once thought occurred "1-in-100 years" are actually like "1-in-5 years" in their frequency. And this will only get worse. But that's not a market structure issue it's a standards issue.
What you write, "The market in power should only exist to optimise" well, that is exactly what ERCOT does.
As for the disaster last week, that was a energy system failure as Texas regulations did not require the natural gas infrastructure to be winterized. Climate change creates more extreme weather events (in all directions but on average warmer) so polar air meant there wasn't enough methane ('natural gas') to power the turbines and heat.
So the issue is the winterization standard in the natural gas infrastructure, but nothing about the structure of the electrical market.
Certainly we need stronger resiliency standards! Events people once thought occurred "1-in-100 years" are actually like "1-in-5 years" in their frequency. And this will only get worse. But that's not a market structure issue it's a standards issue.