Geophysical limits to global wind power

Wind power is a near-zero-emissions source of energy. Although at present wind turbines are placed on the Earth’s surface, high-altitude winds offer greater possibilities for power generation. This study uses a climate model to estimate power generation for both surface and high-altitude winds, and finds that the latter provide much more power, but at a possible climate cost. However, there are unlikely to be substantial climate effects in meeting the present global demand.