Question

The most widely used renewable energy source is _____.

A.wind
B.hydropower
C.biomass
D.solar energy

Answer 1

The most widely used renewable energy source is B. hydropower.

With the global hydroelectric installed capacity exceeding 1,000GW (gigawatts). And produce more than 65% of the global power generation capacity from renewable sources. The most common method of hydropower involves construction of dams on rivers and releasing water. Pumped-storage type plants represent another method of hydroelectricity generation. But not everything is positive with hydropower, some hydropower projects have become controversial during recent years due to the environmental and social impacts related to bio-diversity and human resettlement.

The following renewable anergy sources in order of production -from more to less- are wind, solar and biomass.

Answer 2

The correct answer is option letter B (hydropower). According to the United Nations Educational, Scientific and Cultural Organization (UNESCO), hydropower supplies almost 20% of the world’s energy. This kind of renewable energy is generated from hydroelectric dams and helps reduce carbon emissions, since it is a non-emitting source of energy. According to The House Committee on Natural Resources (Washington, D.C.), the high percentages of renewable energy generated by hydropower (75%) makes it “the leading renewable energy source of power”. Wind is the second most widely renewable source, followed by solar energy and biomass.