Table : TABLE 2.3 AT A GLANCE: Renewable Energy Capacity

RENEWABLE ENERGY TYPE*

TOTAL THEORETICAL MAXIMUM CAPACITY (IN TERAWATTS)

Solar

        101,000

Wind

                190

Biomass

                  92

Geothermal

                  42

Hydroelectric

                    4.7

*Biomass energy is generated by the burning of organic material, such as agricultural wastes or plant oils. Geothermal energy comes from Earth’s internal heat. Hydroelectric energy is generated by the flow of rivers by means of turbines on dams. Data from Science August 13, 2010.