Bunnahab - If wind and solar power were developed, that doesn't mean the existing power grid would be shut down. We can still have hydroelectric power and new sources of energy would supplement that which already exists.

Bert - Convential power stations? Do you mean coal generating plants? We use hydro and natural gas here in Canada. Much cleaner but still it creates havoc with the environment. I'm not sure what the answer would be for those who still use carbons. Get with it.

Just about anything would be better.