I pay for 100% renewable generation. Sometimes the supplier makes so much electricity that the price occasionally goes negative. The consumer will never see the benefits of that while the coal plant subsidies exist. 100% solar is priced the same as coal, since that is the competitor/alternative to get electricity (free market baby! What is a utility but a legalized monopoly anyway?), plus a subsidy to keep the coal plant in operation. Without the need to pay the subsidy, the pricing factors change, green energy is now competing against each other, instead of carrying the load of outdated, inefficient and toxic coal plants.