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Founded Year



Unattributed | Alive

Total Raised


Last Raised

$25M | 10 mos ago

Mosaic Score
The Mosaic Score is an algorithm that measures the overall financial health and market potential of private companies.

+20 points in the past 30 days

About Hydrostor

Hydrostor has developed a low-cost method of grid-scale energy storage using underwater compressed air. Hydrostor's strategy is to partner with utilities and energy producers to accelerate large-scale deployment.

Headquarters Location

365 Bay Street Suite 300

Toronto, Ontario, M5H 2V1,



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ESPs containing Hydrostor

The ESP matrix leverages data and analyst insight to identify and rank leading companies in a given technology landscape.

Energy / Decarbonization & Climate Tech

Companies in this market use some form of compressed air to store energy for the power grid. These companies have been gaining traction due to the perceived long lifetime and low cost of the technology they develop as well as the fact that they can repurpose old coal mines by turning them into storage caverns. However, these companies are still in the early stages of scaling.

Hydrostor named as Leader among 4 other companies, including China Storage National Energy, Green-Y Energy, and Cheesecake Energy.

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Research containing Hydrostor

Get data-driven expert analysis from the CB Insights Intelligence Unit.

CB Insights Intelligence Analysts have mentioned Hydrostor in 1 CB Insights research brief, most recently on Sep 8, 2021.

Expert Collections containing Hydrostor

Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.

Hydrostor is included in 2 Expert Collections, including Energy Storage.


Energy Storage

1,232 items

This collection includes large and small energy storage technology, from grid-scale molten salt containers to small, thin-film lithium-ion batteries.


Grid and Utility

1,554 items

This collection includes companies that are working on software and hardware to improve grids, utilizing new pricing models, and developing microgrids.

Hydrostor Patents

Hydrostor has filed 14 patents.

The 3 most popular patent topics include:

  • Energy storage
  • Renewable energy
  • Energy conversion
patents chart

Application Date

Grant Date


Related Topics




Energy storage, Renewable energy, Continuum mechanics, Solid mechanics, Fluid dynamics


Application Date


Grant Date



Related Topics

Energy storage, Renewable energy, Continuum mechanics, Solid mechanics, Fluid dynamics



Latest Hydrostor News

Hydrostor Frequently Asked Questions (FAQ)

  • When was Hydrostor founded?

    Hydrostor was founded in 2010.

  • Where is Hydrostor's headquarters?

    Hydrostor's headquarters is located at 365 Bay Street, Toronto.

  • What is Hydrostor's latest funding round?

    Hydrostor's latest funding round is Unattributed.

  • How much did Hydrostor raise?

    Hydrostor raised a total of $323.08M.

  • Who are the investors of Hydrostor?

    Investors of Hydrostor include CPP Investments, Goldman Sachs Asset Management, BDC Capital, Sustainable Development Technology Canada, Natural Resources Canada and 8 more.

  • Who are Hydrostor's competitors?

    Competitors of Hydrostor include 24M Technologies, Energy Dome, Moxion , Cadenza Innovation, Quidnet Energy, Form Energy, Cheesecake Energy, FlexGen Power Systems, Powin, Rondo Energy and 21 more.

Compare Hydrostor to Competitors


Malta builds grid-scale energy storage technology that stores electricity from renewable energy sources as heat inside large tanks of high-temperature molten salt and as cold in large tanks of chilled liquid.

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Ambri is commercializing a low-cost energy storage solution known as the Liquid Metal Battery (LMB). Ambri aims to change the way electric grids are operated worldwide by enabling the widespread use of renewable generation like wind and solar, reducing power prices, and increasing system reliability.

Connected Energy Logo
Connected Energy

Connected Energy's solution, called E-STOR, is a British-designed technology that helps a range of commercial customers to mitigate their network and supply costs, and enjoy improved energy resilience. Connected Energy was founded in 2010 and is based in Newcastle upon Tyne, England.

Form Energy Logo
Form Energy

Form Energy develops low-cost energy storage to replace fossil baseload generation with renewable energy to successfully reduce carbon on a global level. Form Energy was formerly known as Baseload Renewables. The company was founded in 2017 and is based in Somerville, Massachusetts.

Antora Energy Logo
Antora Energy

Antora Energy is an alternative energy equipment and products manufacturer that develops thermal batteries for the widespread integration of renewable resources on the electrical grid. It is located in Sunnyvale, California.


Hyme develops thermal energy storage solutions based on the use of molten hydroxide salts as a storage medium.

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