Energy Storage

At the Edison Electric Institute (EEI) annual meeting this week in Las Vegas, the tone was one of collaboration with partners from Washington to distributed generation companies. Those partnerships will be needed as the investor-owned utility (IOU) industry fights not so much a war on coal as a war for mindshare and wallet share in […]

One of the world’s first grid-scale iron-chromium redox flow batteries was interconnected this May to the distribution grid. The EnerVault Turlock, which its developer EnerVault says is a 250-kW, 1-MWh battery grid-scale energy storage system, will be charged by a 150-kW dual-axis tracking solar photovoltaic system in an almond orchard in California’s Central Valley, will […]

Anyone who follows either the energy industry or the military knows that all branches of the U.S. military have aggressive goals for renewable energy and for improving energy security and independence. Microgrids are a key part of that plan. When I wrote about military microgrids in “The Military Gets Smart Grid” back in January 2012, […]

Aside from places where microgrids have a track record—educational, industrial, and commercial campuses—commercial and community microgrids are still the domain of early adopters, but the number of people wanting to travel the trail they are blazing is increasing. A microgrid is any collection of interconnected loads and distributed energy resources within clearly defined electrical boundaries […]

If you’re looking for the easiest place to deploy microgrid technology, look at islands. That was the general consensus of presenters at the 4th Military & Commercial Microgrids Summit in Washington, D.C., held June 17-19. In addition to a presentation about a microgrid being developed for Necker Island—owned by Sir Richard Branson, founder of the […]

If, as Navigant Research suggests, the global microgrid market will exceed $40 billion annually by 2020, where is all the capacity going, and what’s fueling it (literally and figuratively)? Peter Asmus, a long-time researcher of smart grid technologies at Navigant, shared that market projection and others at the 4th Military & Commercial Microgrids Summit in […]

Thirty-two projects—most headed by universities—were awarded grants of various amounts totaling $100 million by the U.S. Department of Energy (DOE) for Energy Frontier Research Centers (EFRCs). The projects were selected from more than 200 proposals. Of the projects, 10 were new while the other 22 received renewed funding. Awards ranged from $2 million to $4 […]

Gas, wind, and solar are it for any new generation in North America for the next five to 10 years (with a few one-offs), speakers at this year’s Platts Global Power Markets conference agreed. The annual event for those involved in power project development, financing, and litigation was held in Las Vegas Apr. 7 to […]

Though often lumped together under the term “energy storage,” the field is in fact a wide range of technologies ranging from well established to speculative, each with different functions, advantages, and drawbacks. The discussion below focuses on existing grid-scale (greater than 1 MW rated power) projects and is generally ordered by level of deployment. Pumped […]

The inherently unpredictable and variable nature of wind power can present significant integration challenges when increasing the penetration of wind turbines within already highly stressed medium-voltage (MV)