Workers at the Coca Codo Sinclair hydroelectric power plant in El Chaco, Ecuador. Hydropower is the biggest non-polluting source of power generation.  Credit: [e]Stringer/Xinhua Press/Corbis

Workers at the Coca Codo Sinclair hydroelectric power plant in El Chaco, Ecuador. Hydropower is the biggest non-polluting source of power generation.
Credit: [e]Stringer/Xinhua Press/Corbis

Renewables are finally becoming a globally significant source of power, according to a United Nations Environment Programme report released in March by Frankfurt School UNEP Centre and Bloomberg New Energy Finance.

Driven by rapid expansion in developing countries, new installations of carbon-free renewable power plants in 2014 surpassed 100,000 megawatts of capacity for the first time, according to the Global Trends in Renewable Energy Investment report. It appears that renewable energy is now entering the market at a scale that is relevant in energy industry terms – and at a price that is competitive with fossil fuels.

The numbers are compelling. Renewables such as wind, solar and biomass generated an […]

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