Gone With the Wind: Weak Returns Cripple German Renewables/Spiegel

Investments in renewable energy were supposed to be a sure thing, with wind park operators promising annual returns of up to 20 percent. More often than not, however, such pledges have been illusory — and many investors have lost their principal to boot. http://www.spiegel.de/international/business/wind-power-investments-in-germany-proving-riskier-than-thought-a-946367.html