The penetration of renewable energy into the electricity supply mix has been much in the news recently. During the first quarter, Portugal generated three-quarters of its electricity with renewable en...

Securities of fossil fuels firms, as an economic sector, may soon be on the decline.

In this era of "repeal the RFS" efforts from API, would you be surprised that Shell regards the US Renewable Fuel Standard as "one of the more effective frameworks out there"?

Including hydropower in the state's renewable portfolio standard could crowd out other renewable energy sources.

The recently released research in Geophysical Research Letters suggests that if 10 percent of the world's energy needs were fulfilled by biofuels from dedicated crops then the consequence would be tha...

Feed-in tariffs, the terminology at least, has come of age. The term can now be found in a prolific English novelist's most recent book. Jasper Fforde's use of the words in fiction is an open acknowle...

While the sun was shining on most clean energy stocks in April, my ten clean energy picks for 2013 (introduced here) got relative showers. The Powershares Wilderhill Clean Energy Index (PBW) was up a ...

Reaching the goal of getting 100 percent of the world's energy from renewable resources is technically and economically feasible today. The challenges lie in the realms of public policy and political ...

Small power plants bring light in a sea of darkness -- pity there are so few of them.