In 2005, the German town of Wolfhagen created an 800 member citizens co-op, which communally invested $2.84 million to buy up 25% of the local energy company and expand its renewables program.

2005 年，德国小镇沃尔夫哈根建立了 800 人的市民合作社，该合作社共同投资 284 万美元，收购了当地能源公司 25% 的股份，并扩大了其可再生能源项目。