1. Environmental Politics in Japan: Networks of Power and Protest;Broadbent,1998
2. The Business of the Japanese State: Energy Markets in Comparative and Historical Perspective;Samuels,1987
3. Japan, Agency for Natural Resources and Energy, Denryoku chōsa tōkeihyō [Electronic energy statistics], 2019, https://www.enecho.meti.go.jp/statistics/electric_power/ep002/results_archive.html#h30.
4. Is Japanese government really centralized?;Reed;J. Japanese Stud.,1982
5. Agency of Natural Resources and Energy, Shi-chō-son-betsu nintei donyūryō [Certified municipality volumes under the feed-in-tariff system], 2019, https://www.fit-portal.go.jp/PublicInfoSummary.