The amendment also requires the State Council Energy Department and the state power regulatory agency to "determine the proportion of renewable energy power generation to the overall generating capacity for a certain period."
Under China's renewable energy law, electricity grid companies will face sizable fines if they fail to purchase power generated from renewable resources such as non-fossil fuels or wind and solar power.
The law and its adopted amendment come about as China remains reliant on coal as a power supply. Two-thirds of the country's power supply comes from coal, Xinhua said.