Why is that downvoted ? You might have the cheapest energy source, if it's not efficient enough to meet demand without ruining the environment for humans then i

Why is that downvoted ? You might have the cheapest energy source, if it's not efficient enough to meet demand without ruining the environment for humans then it's not good. A weak proxy for cost ? Or a strong one for survival ? A cheaper steel bike is less efficient than an expensive carbon fiber bike when your goal is to get to the mountain top before the flood submerges the valley.