How Much Did Hydrostor Raise?
Funding & Key Investors

Hydrostor, a prominent developer and operator of long-duration energy storage systems, has secured significant enterprise-level funding, with a total capital infusion of $319M. The company recently received $0 in financing, underscoring its strategic importance in the global energy sector. Hydrostor's innovative technology, which utilizes compressed air and water for energy storage, offers grid operators a reliable source of clean energy, independent of intermittent renewable sources like solar and wind.

What is Hydrostor?

Hydrostor
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Hydrostor is at the forefront of addressing the critical need for reliable, long-duration energy storage. Their patented technology provides solutions for power grids worldwide, enabling them to store energy for eight hours or more. This capability is crucial for grid stability and the integration of renewable energy sources, ensuring power availability even when renewable generation is low. The company's approach offers a sustainable and scalable method for energy storage, positioning it as a key player in the transition to a cleaner energy future.

How much funding has Hydrostor raised?

Hydrostor has raised a total of $319M across 4 funding rounds:

2021

Grant

$4M

Private Equity

$10M

2022

Private Equity

$250M

2025

Other Financing Round

$55M

Grant (2021): $4M with participation from Natural Resources Canada

Private Equity (2021): $10M led by BDC

Private Equity (2022): $250M supported by Goldman Sachs

Other Financing Round (2025): $55M featuring Export Development Canada

Key Investors in Hydrostor

Goldman Sachs

Goldman Sachs is a leading global investment banking, securities, and investment management firm. It provides a wide range of financial services to corporations, governments, and institutional and individual clients, including mergers and acquisitions advisory, underwriting, asset management, securities trading, and wealth management. Known for its influential role in global capital markets, Goldman Sachs also engages in risk management, financing, and strategic advisory services worldwide.

Export Development Canada

Export Development Canada was founded in 1944. This company provides risk management, secure financing and working capital services. Their headquarters are located in Ottawa, Ontario, Canada.

BDC

BDC Business Development Bank of Canada, founded in 1944 and headquartered in Montreal, Quebec, provides a wide range of financial and consulting services to small businesses, concentrating on technology and exporting.

What's next for Hydrostor?

With substantial enterprise-level backing, Hydrostor is poised for significant expansion and technological advancement. The recent capital injection will likely fuel the scaling of its operations, further development of its patented energy storage technology, and the expansion into new global markets. This strategic investment signals strong confidence in Hydrostor's business model and its potential to revolutionize grid-scale energy storage, contributing to a more resilient and sustainable energy infrastructure.

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Frequently Asked Questions Regarding Hydrostor Financial Insights

What are the most recent funding rounds that Hydrostor has completed, and what were the funding rounds?
Hydrostor has recently completed 3 funding rounds: Other Financing Round on Sep 16, 2025, Private Equity on Jan 10, 2022, Private Equity on Aug 4, 2021.
What is the total amount of funding Hydrostor has raised to date?
Hydrostor has raised a total of $319M in funding to date.
How many funding rounds has Hydrostor completed?
Hydrostor has completed 3 funding rounds.
How much funding did Hydrostor raise in its most recent funding round?
Hydrostor raised $55M in its most recent funding round.
Who are the lead investors in Hydrostor's latest funding round?
The lead investor in Hydrostor's latest funding round was Export Development Canada. To access investor data and explore similar companies, sign up for ZoomInfo.
Which was the largest funding round in Hydrostor's history?
The largest funding round in Hydrostor's history was $250M.
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