Energy Storage

Whether utilities, technology providers, or independent third-party upstarts are best suited to create a reliable recipe for microgrid development remains an open question.

Although new microgrid configurations, technologies, and business models are still evolving in the U.S., some lessons have been learned in the past few years. Aside from the fact that financing nontraditional/non-campus microgrids is hard, if there’s one overarching lesson, it’s that a microgrid designed to provide only one benefit or rely on only one generation source is unlikely to succeed.

Duke Energy is testing a hybrid ultracapacitor-battery energy storage system (HESS) at its Rankin Substation in Gaston County, N.C., in an effort to find a more effective way to integrate renewable energy into its system. The project became operational in February, but there is still testing in progress to demonstrate the system’s multiple service applications. […]

Desert sand from the United Arab Emirates could be used in concentrating solar power (CSP) facilities to store thermal energy up to 1,000C. And replacing the typical heat storage materials used in thermal

Germany’s Energiewende (energy transition) was adopted as policy beginning in September 2010, some six months before the disaster at Japan’s Fukushima nuclear plant, and full legislative support was

We live in a world of “slow growth and volatility,” said Jeffrey Immelt, chairman and CEO of General Electric, but there’s an opportunity to “make a lot of money” if you have courage in such times.

Electric cooperatives are poised to increase their use of electric water heaters as a demand response (DR) and energy storage tool in their service territories.

The 400-MW Iowa Hill pumped storage project, planned for a site east of Sacramento as a means of dealing with ever-growing renewable generation in the area, has been canceled by its developer, the Sacramento Municipal Utilities District (SMUD), because of spiraling costs. The Iowa Hill project (Figure 1) was a planned expansion of the Upper […]

  Look out Tesla, the Germans are coming. The U.S. residential energy storage market took another step forward on January 29 when German firm sonnen announced that it was partnering with solar manufacturer SolarWorld to offer residential solar-plus-storage systems in the U.S., much like the systems announced by Tesla and Solar City last April. Unlike […]

New energy technologies, decreasing renewable energy costs, and low natural gas prices are forcing changes in the way traditional power companies must plan for the future. “A fundamental rethink is now well underway about how energy gets produced, delivered, consumed, and managed in many parts of the world, including the U.S.,” said Ethan Zindler, head […]