Today's Energy Storage Products

Generating Hydrogen to Store Intermittent Power

posted Apr 1, 2014, 2:25 PM by Kay Mann   [ updated Apr 1, 2014, 2:25 PM ]

Hogen C-Series PEM electrolyses from Proton Onsite, image courtesy of the manufacturer

While renewable energy sources such as solar and wind power offer promise for future energy supplies, these renewable sources are not consistently accessible, and thus storage must be an integral part of the energy solution. Hydrogen generation from renewable energy sources for frequency regulation and load shifting during peak production times for use during low production periods is one attractive solution.

Proton exchange membrane (PEM) electrolysis is a promising technology for hydrogen generation applications because of the lack of corrosive electrolytes, small footprint, and ability to generate at high pressure, requiring only deionized water and an energy source.

The HOGEN® C-series hydrogen generation system is the latest offering from Proton OnSite for large-scale hydrogen production from renewables. The C-series system builds directly off the commercial success of other currently fielded HOGEN systems with improvements in efficiency and installed capital cost per kg of hydrogen.

Enhanced system controls include an energy conservation mode for both the generator and temperature control unit that is well-suited to the intermittent hydrogen demand from wind or solar power. With an integrated DI water system, hydrogen quality monitoring, internal temperature control, and self-contained automatic safety system, the HOGEN C-series is a turnkey, completely integrated system for renewable hydrogen generation.

Read more here.

Image: Hogen C-Series PEM electrolyses from Proton Onsite, image courtesy of the manufacturer.

Power-to-Gas Storage Technology from ITM Power

posted Apr 1, 2014, 2:09 PM by Kay Mann

One German product of note is from ITM Power GMBH. ITM Power's H2 energy storage solution includes using natural gas transmission grids as an available and huge energy storage container by injection of hydrogen into the natural gas grid.

ITM announced that on 4th December 2013, its Power-to-Gas (P2G) plant had been successfully integrated with the gas mixing equipment and that for the first time in Germany, and ahead of schedule, hydrogen had been injected into the German gas distribution grid.

ITM Power GmbH can now report the achievement of the following items:

CE conformance for the integrated electrolyser system;
Functional acceptance testing completed and
The granting of the Permit to Operate.

Achievement of CE Conformance required generation of detailed documentation in addition to a series of tests witnessed by an appropriate Notified Body.

Functional testing involved agreement and execution of a suite of tests which together challenged the electrolyser against each aspect of its specification. These tests were undertaken by ITM Power in collaboration with Thüga Group.

The Permit to Operate was granted in two stages by TÜV Hessen following three detailed on-site audits of the electrolyser and gas mixing plant in the Schielestraße, Frankfurt.

FMI see ITM's announcement.

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