Here's an exciting idea in producing clean energy that could truly revolutionize how the world gets its energy.
Commercial photovoltaic solar cells convert approximately 20 percent of received solar energy into electricity. The best solar-energy systems today—thermal-power plants that concentrate the sun’s heat to drive turbines—operate at a rate of about 30 percent efficiency. The JTEC, Johnson claims, could double that figure, cutting the cost of producing solar power in half from its current average of 25 cents per kilowatt-hour, and making it competitive with coal.
“There’s a lot of debate in Washington about carbon emissions and energy,” Paul Werbos says—“about coal, nuclear power, and oil, what I call the three horsemen of the apocalypse. If we can cut the cost of solar energy in half, it becomes possible to escape from the three horsemen. The importance of this is just unbelievable.”