Energy Storage II (Sept/Oct 2011)
Integrating wind and solar power is the key driver for grid energy storage, but storage devices can also be used to arbitrage electricity prices, generate revenues from ancil- lary services, provide reactive power and other services-if regulatory challenges can be sorted out. As electric vehicles build marketshare, lithium-ion batteries are becoming more cost-effective, paving the way for distributed storage to complement larger projects.
Inside this edition:
Compressed Air and Pumped Storage Hydro are established processes, and PSH is already widely deployed. Significant upfront expense and long development cycles, however, impact their ability to provide solutions in the near term. Some PSH developers are avoiding major environmental challenges with closed-loop configurations. CAES breakthroughs may be on the horizon as SustainX and others pursue combustion-free technologies that will use above-ground storage instead of caverns.
Thermal energy storage finds new applications in concentrating solar power and buildings.
An open future for electric vehicles means global competition in batteries is heating up. Large manufacturers, well-capitalized technology developers as well as regional and national economic development agencies are out front.
Profiles: Duke Energy tests grid and commercial storage applications. AES' storage subsidiary markets the multiple benefits of storage in the United States, Latin America and elsewhere. Aquion aims to shave costs of batteries. A123 is an early leader in li-ion batteries for vehicles and utility storage. Beckett Energy Systems shows middlemarket com- panies can play in storage. Wind Energy Institute of Canada develops a test case for frequency regulation on an island. Primus Power advances zinc-halogen batteries.
Additional firms and organizations quoted in this edition include: Andrews Kurth, Argonne National Laboratory, AWS Truepower, Black & Veatch, Boston Consulting Group, Central Indiana Corporate Partnership, Cleantech Group, Distributed Energy Financial Group, DTE Energy, Eagle Crest Energy, eV2G, FERC, First Energy, Halotechnics, Ice Energy, Johnson Controls, Mid-Atlantic Grid Interactive Cars Consortium, Midwest Independent System Operator, Mott MacDonald, MWH, Ohio State University, Pacific Gas & Electric, Pacific Northwest National Laboratory, Parsons Brinckerhoff, Pike Research, PJM Interconnection, S&C Electric, SAIC, Sandia National Laboratory and others.
Look Inside the Energy Storage II edition