Not the OP, but I can say in Japan the spot electric market price is set by the marginal generator: LNG peaker plants. Thus if renewables were selling into the

Not the OP, but I can say in Japan the spot electric market price is set by the marginal generator: LNG peaker plants. Thus if renewables were selling into the open market the price for their electricity would indeed be determined by the fossil fuel plants. Yet the vast majority of renewables being installed world wide are doing so under more favorable deals.