"How shall we ever slake our ever-growing demand for electricity? Even as concerns about global warming escalate, are we doomed to create more of the same old polluting, coal- and oil-dependent power plants? Or can common sense — and some radically new technologies — serve us better?
There's much talk of wind and solar power. But how about the oceans and their massive tidal and current patterns? Driven by the gravitational force of the sun and the moon, tides and currents represent a source that's as infinite and everlasting as any force on Earth."
This makes sense. There's plenty of "free" power out there to tap into, and that's why power storage (batteries) and delivery (the power grid) are integral to weaning away from fossil fuel.