Renewable energy was the exclusive power source for all of China's Qinghai region from June 17 to June 23. That region received all of its power from solar, wind, and hydropower for a week, demonstrating how far renewables have come. 1.1 billion kilowatt hours of energy were generated for 5.6 million people.
This test was part of a larger trial of renewable energy sources by the State Grid Corporation of China. Officials in the country are trying to figure out what's required to make renewables a long-term energy solution.
The energy generated by those technologies during a single week was equivalent to burning 535,000 tons of coal. Hydropower was responsible for 72% of the electricity.
Around the country, China intends to switch to 20% renewables by 2030.