WSP USA to Manage World’s Largest Underground Green Hydrogen Storage Project

Published 3 hours ago

Proposed by FSSF

WSP USA has been awarded the Engineering, Procurement and Construction Management (EPCM) contract for the underground storage portion and associated surface facilities of a major clean energy storage infrastructure to build the largest largest green hydrogen production and storage facility in the world.

WSP has been selected by a joint venture between Magnum Development and Mitsubishi Power to lead all EPCM phases of the ACES Delta underground storage facility in Utah, beginning with Phase I, which involves developing two large salt caverns capable to contain a total of 11,000 metric tons of hydrogen.

The company will also be responsible for the solution mining infrastructure, water and power supply facilities, brine management, and assist with the energy center’s environmental compliance.

The ACES Delta project involves converting renewable energy into green hydrogen that can be stored in commercial-scale solution extraction caverns. When complete, it will provide seasonal 100% clean energy storage capacity, deploying technologies and strategies critical to a decarbonized future for the western US power grid.

“Green hydrogen is the future of renewables,” said Andres Fernandez, national hydrogen market manager for WSP, a leading engineering consultancy and professional services firm. “Green hydrogen is particularly unique because it uses only renewable sources combined with advanced electrolysis technology to generate hydrogen. WSP is honored to be part of an innovative team that will deliver the next generation of renewable energy and drive the green energy transition.

ACES Delta will capture intermittent renewable generation and shape the product into reliable, dispatchable electricity, making the project’s seasonal storage capabilities ideal for integrating renewable energy facilities with existing energy infrastructure. Each cavern will contain the equivalent of 150 gigawatt hours (GWh) of carbon-free dispatchable energy, which is equivalent to 40,000 megawatts of lithium-ion batteries. This stored green hydrogen becomes an energy reserve that can be released to produce fuel for power generation at any time.

The overall project will improve grid reliability and efficiency through the optimization of existing transmission line loads, while creating the ability to displace excess generation from highly productive renewable energy generation months with low electrical load to cover demand during peak load periods. It also reduces the need to overbuild renewables and new transmission assets.

The massive natural geological salt formation is adjacent to the Intermountain Power Project (IPP) near Delta, with transmission interconnections to major demand centers throughout the west and significant renewable energy resource opportunities in the region.

“Using salt caverns for seasonal energy storage is a significant opportunity to empower hydrogen as an energy carrier and dramatically expand energy storage resources across the United States. United,” Fernandez said. “This will further support increased renewable energy construction, thereby reducing America’s carbon footprint. WSP draws on decades of experience in underground storage to provide a full range of services around the hydrogen economy. This project strengthens WSP’s leadership in underground storage and positions the company to become a key player in the development of hydrogen hubs.

After nearly two years of engineering efforts, WSP is grateful to have the opportunity to support ACES Delta for the execution phase of the project and help advance the hydrogen economy in the States. United States, at a time when the industry is poised for significant growth. This project solidifies WSP’s global leadership in underground liquid and gas storage facilities, including hydrogen, and aligns with WSP’s mission to help its customers and communities become Future Ready®.


WSP USA is the US operating company of WSP, one of the world’s leading engineering and professional services companies. Dedicated to serving local communities, we are engineers, planners, technical experts, strategic advisors and construction management professionals. WSP USA designs sustainable solutions in the building, transportation, energy, water and environmental markets. With more than 12,000 employees in 200 offices across the United States, we work in partnership with our clients to help communities thrive.

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WSP is one of the world’s largest environmental, engineering, consulting and sustainability consulting firms, with more than 55,000 professionals worldwide. We design sustainable solutions in the building, transport, energy, water and environmental markets, and develop equitable and ESG-focused strategies that help organizations and communities adapt to changing conditions and become more resilient. Account with the past. Innovate for the future. Learn more at


Bonny J. Streater