What is Hydrostor?
Hydrostor operates at the intersection of infrastructure and clean technology, specializing in the development and management of long-duration energy storage systems. By utilizing a patented process that integrates compressed air and water, the company provides a scalable alternative to traditional battery storage. This technology is specifically engineered to deliver eight hours or more of discharge, addressing the critical challenge of grid reliability in a decarbonizing global economy. As a leader in the energy transition, Hydrostor serves as a vital partner for grid operators seeking to integrate higher percentages of renewable energy without compromising system stability.
How much funding has Hydrostor raised?
Hydrostor has raised a total of $319M across 4 funding rounds:
Grant
$4M
Private Equity
$10M
Private Equity
$250M
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 that provides a wide range of financial services to corporations, governments, and institutional clients.
Export Development Canada
Export Development Canada is a financial institution that provides risk management, secure financing, and working capital services to support Canadian businesses in global markets.
BDC
The Business Development Bank of Canada provides a wide range of financial and consulting services to small and medium-sized businesses, with a focus on technology and exporting.
What's next for Hydrostor?
Looking ahead, the infusion of capital from this major enterprise-level funding round will likely be directed toward scaling project development and expanding the company's global footprint. As the demand for grid-scale storage intensifies, Hydrostor is well-positioned to capitalize on the shift toward sustainable energy infrastructure. The strategic focus will likely involve optimizing supply chain efficiencies and securing additional utility-scale contracts. By leveraging its proven technology, the company aims to solidify its market position as a cornerstone of the future energy grid, providing the necessary flexibility to support the global transition to net-zero emissions.
See full Hydrostor company page
