"As of January 2008, 11 citizens' wind turbines were in operation in Japan. The first wind power plant built with citizen funding, known as Hamakaze-chan, or "beach wind," with a rated output of 990 kilowatts (kW), was installed in Hamatonbetsu in Hokkaido, northern Japan, in September 2001. Since then, citizen-funded wind turbines have become popular not only in Hokkaido but also in the prefectures of Aomori, Akita, Chiba, and Ibaraki. The total output of these 11 wind turbines has reached 15,790 kW, and their annual power generation is roughly 40 million kWh, enough to serve the equivalent of 10,700 households, and estimated to reduce carbon dioxide (CO2) emissions by about 24,000 tons.