Thought leaders from across Japan’s energy sector gathered in Tokyo to discuss the role energy will play in adapting the country’s cities to a challenging environment of aging and declining population and increasing dependence on foreign sources for food and fuel. Tokyo-Yokohama, the world’s largest urban concentration, is already in many ways in the vanguard of the future of urban centers. What happens in this mega city is being watched closely across the planet for ideas to emulate or avoid.

You don’t often hear Kansas and Spain mentioned in the same sentence. Yet today Spanish company Abengoa is bringing another big cellulosic biofuel facility online in Hugoton, a small community in the Southwest corner of the state. This is the second big plant starting up this year, showing that after some predictable yet highly scrutinized…

Carbon capture and storage (CCS) is often promoted as a way for coal power to be made “clean”: Projects such as the in-progress Kemper power plant in Mississippi and the recently announced Petra Nova project in Texas aim to trap the carbon dioxide from burning coal and then store it into underground storage or into…

Billing the breakthrough as the “world’s smallest electric generator,” scientists have found a way to translate kinetic energy into power using a material no thicker than a layer of atoms.  Researchers imagine that the bendable, stretchable material could be woven into clothing that might power body sensors, medical devices, or a phone in your pocket.…

Loan guarantees have been around since at least the 1940s, when the U.S. government backed loans for homes, farms and businesses for World War II veterans. More recently, the U.S. government has used loan guarantee programs to support the development of clean energy. Projects including the large Ivanpah solar facility in California’s Mojave Desert, a…

Detractors have called the U.S. Environmental Protection Agency’s proposed limits on power plant emissions onerous and unachievable, but the Union of Concerned Scientists is out with a report that does more than fend off those claims. The group says the Clean Power Plan could go much further than it does in cutting carbon, simply by properly accounting for the demonstrated…

Cutting the U.S. greenhouse gas emissions that stoke climate change could save billions in energy costs and boost revenue for the natural gas industry, according to a new report from the World Resources Institute, a research organization that advocates for environmental sustainability. The report, Seeing Is Believing, focuses on five areas that account for 55…

An area in the U.S. Southwest that’s about half the size of Connecticut has emitted the country’s largest concentration of methane, a potent greenhouse gas, according to a new analysis of satellite data. The study, which was released jointly by the American Geophysical Union and NASA, found that between 2003 and 2009, the area released…

What happens when a manager of Naval Facilities Energy Initiatives decides to go “net zero” on his home in Washington, D.C.? You get a true zero-energy home, done right on a budget. Andrew Knox wanted to “walk the walk” of energy efficiency, so he and his wife, Elizabeth, had some decisions to make.  To attain…

American cars are using less gas per mile and emitting less carbon dioxide than ever before, according to a government analysis released Wednesday. The average fuel economy of 2013 models is 27.6 miles per gallon for cars and 19.8 miles per gallon for trucks, “both of which are all-time highs,” said the report from the…