The Anonymous Widower

How Long-Duration Energy Storage Will Accelerate The Renewable Energy Transition

The title of this post, is the same as that of this article on Renew Economy, which is an Australian publication.

It is very much a must-read and although it was part-written by the President of Hydrostor, who are a Canadian long duration energy storage company, who store energy by compressing air in underground caverns.

The article gives some details on how investment is flowing into long duration energy storage.

We’re also seeing significant and sustained levels of investment in long-duration energy storage happen beyond Australia’s borders.

For example; Saudi Aramco Energy Ventures invested in Energy Vault to accelerate its global deployment of its energy storage solution; Bill Gates and Jeff Bezos invested in iron-flow batteries via Breakthrough Energy Ventures; Sumitomo Corporation invested in UK-start up Highview Power and their cryogenic liquified air storage system; and our team at Hydrostor closed a financing round including a strategic partnership with infrastructure investor Meridiam.

Big players like these, generally don’t back losers. Or at least they pour in more money and expertise, to make sure they succeed.

This paragraph also describes Hydrostor’s sale to Australia.

In 2020, Hydrostor’s 200 MW and 8 hours (or 1,600 MWh) A-CAES system was selected by New South Wales’ Transmission Network Service Provider, TransGrid, as the preferred option in its RIT-T process for reliable supply for Broken Hill.

They are also developing a large system in California.

With Highview Power having sold perhaps ten systems around the world, it does appear that long duration energy storage is taking off for Highview and Hydrostor, who both use that most eco-friendly of storage mediums – air.

The article is fairly scathing about developing more of the most common form of long duration energy storage – pumped storage using water. Especially in Australia, where water can be scarce. But with the world getting warmer, I don’t think we need to design systems, where all our stored energy can evaporate.

Conclusion

I agree very much with the writers of the article, that more long duration energy storage is needed, but that pumped storage is not the long term answer.

July 3, 2021 - Posted by | Energy Storage | , ,

2 Comments »

  1. Indeed solutions scaled upto 100’s MW become a lot more attractive as despatchable power to the grid operator and using underground structures are ideal. Wonder if salt mines in Cheshire would be suitable?

    Comment by Nicholas Lewis | July 3, 2021 | Reply

    • I wondered the same thing about the salt mines, as I used to work for ICI in Runcorn and had the Cook’s tour.

      I also remember the problem ICI had when water got into the Winsford mine.

      I believe the caverns are used for gas and document storage now!

      Comment by AnonW | July 3, 2021 | Reply


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