Redflow and Ameresco to deploy microgrid for US Defense

Concept image of Redflow batteries with solar panels in background (california)
Image: Redflow

Aussie-born energy storage firm Redflow and US cleantech integrator Ameresco have signed a US$2.83 million contract with the United States Department of Defense’s (DOD) Defense Innovation Unit (DIU) to deliver a prototype microgrid using a 1.2-1.4MWh Redflow long-duration energy storage (LDES) system.

Redflow will partner with Ameresco as their subcontracted engineering to deliver the microgrid project. The project, which aims to extend the duration of energy storage for existing installations, will repower a solar-powered microgrid currently located at the Stewart Air National Guard Base in New York state.

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The repowered microgrid project scope will integrate Redflow’s 1.2-1.4 MWh LDES solution, enabling the microgrid to provide a dispatchable solar + storage resource for peak shaving and energy resilience.

Redflow’s solution will demonstrate scalable flow batteries at MWh scale and restore microgrid-controllable renewables at a military industrial scale for integration for the Air Force base, with the objective of delivering a stronger base of power for improved returns on existing investments to enhance resilience.

This project comes from Redflow’s selection for participation in DIU’s Extended Duration Storage for Installations program. The program is designed to match innovative LDES technologies to projects that demonstrate additional technological capability by providing energy resilience and power backup across the DOD’s 450+ global bases.

Redflow CEO and managing director Tim Harris said, “We are proud to have been selected as the energy storage technology provider for this US Department of Defense microgrid project.

“We have been working with the Defense Innovation Unit for the past year to support their energy resilience objectives across the military’s global operations. To be selected as the solution provider is validation that Redflow’s LDES solutions hold the potential to deliver significant benefits to US Department of Defense installations worldwide.”

The Department of Air Force aims to use the repowered Stewart Air National Guard Base solar energy microgrid with 1.2-1.4 MWh of Redflow energy storage to provide energy resilience for critical loads on the base.

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The microgrid will also provide a dispatchable solar plus storage resource that is capable of peak shaving and supports the State of New York’s clean energy goals. If successful, the solution could be rolled out across numerous US Department of Defense facilities and critical infrastructure around the world.

Deployment and commissioning of the system is planned for the second half of 2024.

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