Hydrogen Energy Storage: A New Solution To the Renewable Energy Intermittency Problem

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Mark Schiller, VP Proton OnSite July 16, 2014

The need for a complete energy storage solution is becoming more acute where fields of wind turbines are already generating gigawatts of electricity, often with a significant mismatch in grid power demand...

...Water electrolysis technology is the most flexible and tenable solution to store renewable energy on a large, long-term scale. Using excess renewable electricity the Proton Exchange Membrane (PEM) electrolyzer splits water into its constituent parts, hydrogen and oxygen, that can be stored in common tanks. Hydrogen is a flexible energy medium and the technology to produce the gas is working today. Our challenge is to scale-up hydrogen generators to meet the demand of the growing renewable power industry...


How a proton exchange membrane splits water into its constituent parts.

...Hydrogen gas has the largest energy content of any fuel, making it a very good ‘vehicle’ for holding and distributing energy. With the ability to hold 120MJ/kg, a relatively small amount of hydrogen is needed to store significant amounts of energy. The stable chemistry of hydrogen also means you can store energy longer than any other medium..


A mapped comparison of alternative energy storage methods, in terms of capacity against discharge time

...Over the last few years, hydrogen is being taken more seriously by the power industry, as a solution to making renewable energy grid ready. One of the biggest benefits of hydrogen energy storage is that it’s scalable. A 2-MW hydrogen electrolyzer is the size of a shipping container and can be easily installed next to a field of wind turbines or a distribution substation. We have our megawatt prototype modules being tested in our manufacturing facility today. In Germany in particular, hydrogen energy storage is already beginning to be implemented into its growing renewable energy network...


The ‘Wind2H2’ project uses electricity from wind turbines to produce and store hydrogen at the NREL's national wind technology center in Boulder, CO

Full Article: http://www.renewableenergyworld.com/rea/news/article/2014/07/hydrogen-energy-storage-a-new-solution-to-the-renewable-energy-intermittency-problem

Comment #1: Anumakonda Jagadeesh July 17, 2014

Excellent. Hydrogen is the future energy carrier. Hydrogen and Fuel Cells form the best combination and energy option. Hydrogen can be generated through renewables like solar,wind.I was giving a Keynote speech at World Hydrogen Energy Conference 2014,Gwangjo,Republic of Korea,June 15-20 2014) where in there were excellent research papers on Hydrogen energy storage.
Dr.A.Jagadeesh Nellore(AP),India
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