The state of Vermont has come up with a good rule for reducing the cost of solar power installations. A national study recently found that local permitting can increase the cost of residential solar by 15-20%, a problem that becomes more pressing as the cost of solar hardware falls. Vermont’s rule shifts the burden of permitting … Read More
Minneapolis Star Tribune – May 23, 2012 Minnesota spends more than $20 billion a year on energy — primarily importing polluting fossil fuels — and the state’s utilities typically lobby against decreasing our dependency. This hampers our economy and harms our environment. Fortunately, cities don’t have to rely on the Legislature to stand up for more-efficient … Read More
In the long run, there’s no avoiding energy storage for a 100% renewable energy society. The two major sources of renewable power are wind and sun, and they are either fickle or reliably not available at night. The problem is that the simplest energy storage option for electricity is batteries, and this image from Wikipedia (hat … Read More
Florida Times-Union, May 17, 2012 There are a few key principles to remember about energy: As more of the world moves to the middle class, energy needs will grow enormously. “The absolute numbers are staggering,” writes Daniel Yergin, author of “The Quest: Energy, Security and the Remaking of the Modern World.” He provides deep background on … Read More
After Wall Street popularized the term “mortgage-backed securities” in their destruction of the economy in 2008, you could be forgiven for thinking “solar securities” are a pyramid scheme. But in truth, they may hold the key to democratizing the financing and the ownership of distributed renewable energy. Right now, financing solar typically means looking for a … Read More
Your mind-blowing chart of the day, courtesy of Arne Jungjohann at the Heinrich Böll Foundation. Source for U.S. use; source for German use; used U.S. average household size of 2.6.
In lieu of smarter policy, schools, libraries, and city buildings hoping to install solar power have to resort to complex public-private partnerships to access federal tax incentives. One common strategy is the power purchase agreement (PPA). In essence, a PPA allows the public building owner to buy solar electricity on contract from a third party (instead … Read More
If you haven’t heard yet, there’s a “rule” that precludes distributed renewable energy projects from supplying more than 15% of the power to most “distribution circuits” (part of the low-voltage electric grid that brings power into homes and businesses). With the rapidly falling cost of solar power, many places in the country are starting to push … Read More
In a forthcoming report on U.S. feed-in tariff programs, I’ll provide a comparison of solar feed-in tariff (FIT, a.k.a. CLEAN Contract) rates across the United States. Comparing published rates is not particularly helpful, however, because contract lengths vary (from 15 to 25 years) and the solar resource also varies widely. For international comparisons (e.g. Germany), it’s also … Read More
