

No, but I don’t think you’re appreciating how difficult it would be to fill that 3%. It’s not just about having 3% more power from something. It’s having it at the right time. It needs to be on demand. Having something on demand that has to cover all it’s costs selling just 3% isn’t easy.
It’s more resilient to have mixed supply where multiple types of generation take a proportion. Then when one falls short another can scale up a little.
They just assumed a constant draw I think.