The installed capacity of renewable energy electricity generation in Zhangjiakou has reached 12.03 million kilowatts. Global Renewable Energy Consumption Has Accelerated. As recently as 2015, global wind generation was more than three times solar generation. Biofuels Tell A Different Story Biofuels have to be considered separately because they primarily compete in transportation fuels rather than electricity generation. In other words, renewables supplied only about 40% of the increase in global energy demand.