Hy2green - Electrolytic Hydrogen Energy Storage Using Novel Metal Hydrides
Hydrogen equipment was delivered to site Q4, 2022 and installation is underway.
Technology & Investment Solutions, LLC
Recipient
Tustin, CA
Recipient Location
37th
Senate District
73rd
Assembly District
$1,513,779
Amount Spent
Active
Project Status
Project Update
As of February 2026, all fieldwork needed to operate the Hy2green storage system with power input from the grid has been completed and is currently operational. The system has successfully demonstrated the ability to operate fully autonomously for 30 consecutive days. When fully charged, the system provides 491kWh of energy, which is used to power the project site's digester pumps and heating.
The Issue
California's energy storage market is largely dominated by lithium-ion energy storage technologies designed for four-hour duration. A growing need to optimize the use of renewable generation coupled with more frequent incidents of grid outages resulting from wildfires and public safety power shutoffs has increased the need for safer, longer duration energy storage options.
Project Innovation
This project will field test a small-scale skid mounted Hy2green hydrogen energy storage system integrated with solar PV. The project will test the Hy2green hydrogen system's metal hydride hydrogen storage performance and optimize the energy management systems. The project will validate the ability of metal hydrides to store hydrogen in a long duration energy storage application, and gather lessons learned to inform future deployments of metal hydride energy storage, a technology with the potential to support California's energy goals.
Project Benefits
The Hy2green MEDI system offers environmental and public health benefits by displacing gasoline and diesel-fueled electric generators with zero-emission fuel cells, and by using safer, low-pressure metal hydride hydrogen storage. Compared with conventional ultra high-pressure hydrogen storage systems, the system can also improve energy reliability, safety, and security.
Economic Development
Economic Development
The larger scale deployment of the hydrogen storage systems at NREL and power substations will support economic development.
Environmental Sustainability
Environmental Sustainability
The project supports public health goals by demonstrating zero-emission fuel cell technology that can replace diesel generators, while low pressure metal hydride storage with minimal leakage and improved safety may enhance public acceptance of hydrogen projects and wider deployment.
Safety
Safety
Gaseous hydrogen is typically compressed and stored at high pressures (up to 700bar) to reduce the physical storage tank size. Storage of high-pressure hydrogen for long duration energy storage applications can present potential safety challenges. This technology stores hydrogen at low pressure, helping to mitigate those concerns.
Energy Security
Energy Security
Hydrogen technologies have the potential to provide long duration energy storage for electrical resiliency at lower costs than lithium-ion technologies. Additionally, energy stored as hydrogen may be flexibly integrated with other energy needs such transport fuel. Hydrogen storage can provide energy security for multiple applications using the same hydrogen infrastructure.
Subrecipients
Khalil Kairouz Consulting, LLC
Electrical Work, Inc.
CIRCLE GREEN, INC.
GKN HYDROGEN CORP.
Tekzoft Solutions LLC
Transformation Holdings LLC
Match Partners
Technology &
Investment Solutions, LLC
