Clean energy is not without risks: Clean Currents goes out of business
There was a firm, Clean Currents, that bought wind-generated electricty and sold it to customers in DC, Maryland, Virginia, feeding the electricity into the service grid.
As the cost of electricity on spot markets has shot up as much as 500% during the polar cold snap, they were inadequately hedged and declared bankruptcy.
-- "Clean Currents turns off its lights after January's polar vortex spiked energy prices," Washington Post
-- "Cold and unhedged: How the polar vortex drove Clean Currents out of business," Business Journals
-- "Clean Currents wins Washington Business Journal Green Business of the Year," press release, 2010
Similarly, post-Fukushima responses in Germany and other countries that led to cessation of the use of nuclear power and substitution with "clean" energy has led to significant price increases ("After Fukushima: Could Germany's nuclear gamble backfire?," CNN).