The interuptibles they speak of are electricity users.
The gas transmission companies can and do limit gas fired generation when it gets too cold.
I could have put 580mw to the grid during the last cold snap, but couldn’t due to lack of gas. (Both high price and availability)
Even during a declared emergency by a grid operator, requesting all available generation, we couldn’t run/generate.
NO gas
I was on the opposite side of it a time ago.
We were doing a Natural Gas Storage facility with Electric Drive Compressors. We got a dirt cheap rate on electricity based upon interruptible power.
The facility needed to store so much in a month, typically known in advance by contracts.
If we got shut down for a half a day, no big deal.
I'm not sure it makes sense to do the same with generated power that will be needed right now.