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energy storage

Study: Battery Energy Storage Works For Solar But Not Wind

September 18, 2013 by Silvio Marcacci

Renewables and Energy Storage Issues


Everyone knows energy storage is the key to unlocking renewable energy’s full potential, right? Well, not always. Utility-scale batteries make sense for storage from large solar power systems, but not wind farms, according to the journal Energy & Environmental Science.[read more]


Reinventing Batteries for Electric Vehicles: Interview with ARPA-E Deputy Director Cheryl Martin

August 30, 2013 by Jesse Jenkins

ARPA-E Deputy Director Cheryl Martin

Last week ARPA-E awarded $36 million under the agency’s new Robust Affordable Next Generation Energy Storage Systems, or RANGE, program. In an exclusive interview, Deputy Director Dr. Cheryl Martin discusses RANGE and the agency’s efforts to reinvent the EV battery.[read more]

Cheers and Jeers: Reality and the EPA

August 9, 2013 by Mark Green

Kudos to the EPA for deciding to give the oil and natural gas industry more time to install emissions controls on storage tanks. Phasing in the deadline for controls on volatile organic compounds emitted by storage tanks instead of the original deadline is encouraging.[read more]

What's the Point of an Electricity Storage Mandate?

July 31, 2013 by Catherine Wolfram

Electricity Storage and Duck Graphs


An aptly named picture – the “duck graph” – is captivating the California energy policy world. It depicts electricity demand net of projected renewable generation (“net load”) on a representative day in the not too distant future. One point of concern is the duck’s long neck.[read more]

Germany's Energy Storage Subsidy Is No Solar Miracle

July 25, 2013 by Eric Wesoff

German Solar Energy Storage

In April, we asked if a German subsidy on energy storage could replicate the German solar miracle, but for batteries and energy storage systems this time. The answer is no. In fact, there were fewer than 500 applications for the energy storage loan as of two weeks ago.[read more]

Distributed Generation, Electricity Storage, and the Utility of the Future

July 16, 2013 by James Greenberger

If the market for storage grows up “inside the meter”, rather than on the utility side of the meter, there is good reason to believe that utilities will have a hard time getting that market back.[read more]

Energy Storage: Next Growth Market in US and Europe

July 15, 2013 by David Thorpe

Energy storage is the currently missing link that will enable the intermittent renewable energy sources like wind and solar to play a much greater part in the future grid mix.[read more]

Germany on the Verge of a Subsidy for Energy Storage

April 18, 2013 by Eric Wesoff

German energy subsidies

Could a German subsidy on energy storage replicate the German solar miracle for batteries instead? The launch and terms of a long-threatened energy storage subsidy are due to be introduced on May 1.[read more]

China’s Growing Methanol Economy

March 1, 2013 by Zana Nesheiwat

China's methanol industry

Balancing dependence on Middle East oil against increasing fuel demand continues to challenge China in its ongoing urbanization and industrialization.[read more]

CleanTech Investment: Flywheel Energy Storage

February 22, 2013 by Tyler Hamilton

Enbridge Inc. is emerging as major corporate venturing partners in the Canadian cleantech scene. It has already acquired more than $3 billion in renewable energy assets.[read more]

The Case for Grid-Connected Energy Storage

February 17, 2013 by James Greenberger

If the highest objective of new energy technology is to provide greater flexibility to manage the electricity grid in ways that society deems most beneficial, then no technology—not wind, not solar, not biomass, not new transmission technology—is more important to develop than energy storage technology.[read more]

Smart Grids and Smart Cities – Same Problems, Same Solutions?

April 9, 2012 by Christine Hertzog

The world population is expected to soar to more than 9 billion people by 2050.  Roughly 70% of the global population will live in cities, which today consume 70% of global energy supplies.  That’s a concern for electric and water utilities, but there are ways to address these concerns.  The best Smart Grid planning...[read more]

What’s Missing In Smart Grid Roadmaps

March 12, 2012 by Christine Hertzog

Smart Grid technology roadmaps help utilities plan for grid modernization. However, they must address changes in utility cultures, particularly the investor-owned utilities (IOUs), and these changes will require support in the form of new regulatory policies.[read more]

Developing Low Cost Batteries For Energy Storage

March 7, 2012 by Antonio Pasolini

   Photo: AquionAbout one fifth of the world’s population lacks access to electricity. It is one of biggest economic obstacles for people in developing countries, but one that could mean opportunities for a clean energy beginning with alternative energy.    There are many possibilities for those excluded people and...[read more]

Good Long-Term Outlook for Wind Power Bodes Well for Energy Storage

February 12, 2012 by James Greenberger

Photo by Martin Cathrae via Flickr

Long term, therefore, the outlook for wind energy is good—as is the outlook for the electricity storage technology necessary to balance wind's inherently variable nature. As electricity costs begin to rise, power purchasers will find the long term, stable electricity prices that wind projects offer more attractive. As they do, attention will turn to how best to balance the variable nature of that electricity in an environment in which natural gas cannot be counted on to deliver a low cost, long term balancing solution.[read more]