Hydrostor’s long duration energy storage technology
Sarah Griffiths, VP of Government and Regulatory Affairs at Hydrostor, answers questions about grid stability, and the need for long-duration energy storage.
Sarah Griffiths, VP of Government and Regulatory Affairs at Hydrostor, answers questions about grid stability, and the need for long-duration energy storage.
Griffiths explains how Hydrostor’s patented A-CAES technology is ready to secure the future power grid. She notes that a typical 500 MW 8-hour A-CAES facility can abate up to 28 million metric tonnes of CO2 if it replaces coal. This is equivalent to removing 120,000 passenger vehicles off the road each year of operation.
According to Griffiths, "we need a full-scale rethink of markets to ensure that they are incenting the resources that need to keep the grid reliable and affordable. Advanced compressed air energy storage is well suited to be that backup. It can be flexibly sited and provides the same services as the traditional fossil fuel plants."
More insights from Hydrostor:
The advanced compressed air energy storage impact
LDES is enabling grid decarbonisation
About Hydrostor
Hydrostor is disrupting the conventional understanding of what energy storage options are available today by deploying an innovative underground long duration energy storage solution that ensures a clean energy supply is available 24/7, even when the sun isn’t shining and the wind isn’t blowing.
Hydrostor’s patented Advanced Compressed Air Energy Storage (or “A-CAES”) technology integrates compressed air, underground caverns, and water, with proven components from traditional mining and gas operations to provide a low-impact and low-cost energy storage solution.
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- Enlit Editorial Team
- 11/03/2026











