What mechanism exists in the initial bid phase to deter lower cost producers from offering less power than they will actually supply? This would push the price per unit up. Supplying more than they offered would get them a larger chunk of it.

I'm not sure how the market works in my country, but I understand there are bitcoin miners that work directly with suppliers to buy power that can be cut off at a moments notice so extra supply can be generated and sold cheaply if not needed, eliminating spin up time.

I think it might be at the pilot program stage, but it does seem like a reasonable option to provide resiliency in an economical fashion.