By some estimates, America’s oceans could provide enough electric power to meet a quarter of the country’s energy needs. Despite this, until recently the contribution to the U.S. electric grid from marine energy has been exactly zero.
The Scottish government has an ambitious plan to meet 100 percent of its demand for electricity from renewable sources by 2020. Like much of the world, Scotland has produced significant amounts of its electricity by burning coal for more than 100 years. But no longer.