> The price for wholesale electricity is set by a bidding process, with each generating company saying what it would be willing to accept to produce a unit of electricity.

Without mentioning how Contracts for Difference (CfD) works, this is a slightly disingenuous oversimplification.

Gas is the yang to winds yin. What other dispatchable power source is there that Britain could use?

Whatever the dispatchable power source, it would have to last weeks at a time in the coldest months of the year.