Smart Grid

Shining a light on solar

Busting 4 myths about solar PV vs. concentrating solar

Although both produce electricity from the sun, there are significant differences between solar photovoltaics (PV) and concentrating solar thermal electricity generation. This guide provides answers to the most pressing questions about the two solar technologies. 1. Isn’t concentrating solar power cheaper? No. Five years ago, the two technologies were relatively comparable, but in 2011 there’s no doubt that distributed solar PV is cheaper than concentrating solar power.   A concentrating solar power plant has a capital cost of $5.50 per watt without storage, and $7.75 per watt with six hours of thermal storage. The levelized cost of electricity from a Mohave …

Road to recovery act

The Recovery Act: the most important energy bill in American history

If the American Recovery and Reinvestment Act (ARRA) had been an energy bill, it would arguably have been the single-most important piece of clean energy legislation in our nation’s history. It drove unprecedented new investments — both public and private — into modernizing America’s clean energy infrastructure. And its clean energy provisions alone have already saved or created 63,000 jobs and are expected to create more than 700,000 jobs by 2012. Now that ARRA has run its course, we need to stay committed to these investments to keep building the U.S. clean energy industry and remain globally competitive. Newly elected …

knowing is 57 percent of the battle

Knowing what you spend on energy can cut usage by more than half

Feedback: It works for robot monkey arms and Scientology auditing, so shouldn’t it work to help you save electricity? Networking company Silver Spring Networks and Oklahoma Gas & Electric think so (and so do we). They’ve teamed up for a year-long experiment in Norman, Okla., to test smart grid solutions, allowing users to get feedback on their energy consumption using different technologies and pricing plans. The result: The right combo of gadget and pricing plan helped people cut peak household energy use up to 57 percent. Energy-tracking technology saves: Smart thermostats, which can self-adjust based on energy needs, prices, and …

Batteries included

California to green its grid with energy storage

With intermittent sources like wind and solar becoming more common, energy storage is increasingly seen as crucial for greening the grid.Photo: mike_tnIn just about every story on renewable energy, there’s a familiar cast of characters: green power developers, utilities, and sundry state and federal regulators. But there’s one key player that often lurks in the background — the grid operator. In the Golden State, most of the power grid is controlled by the California Independent System Operator. Based in a suburb of Sacramento, Cal ISO, as it’s known, essentially ensures that electricity supply and demand stay in balance to prevent …

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