The pair announced a strategic relationship through which Redflow will supply Ameresco with non-lithium battery energy storage system (ESS) technology on a non-exclusive basis. No financial details were disclosed.
Redflow’s energy storage will go into Ameresco’s medium- to long-duration deployments and daily cycling applications, they said. The long-duration zinc-bromine flow batteries are capable of 100% depth of discharge.
The companies are planning a commercial demonstration system incorporating Redflow’s 40 kWh 4-battery enclosure to one of Ameresco’s existing customer sites. The enclosure is a compact and scalable ESS aimed at smaller commercial and industrial customers.
The duo envisage a wide deployment of systems and are developing solutions including a national smaller system for retail branches, critical infrastructure in fire-prone areas, and federal government resilience projects.
They are also planning to build a utility-scale solution scalable into the hundreds of MWh.
Redflow said its batteries are well-positioned to meet the Inflation Reduction Act’s tax credit local content requirements and are less impacted by global supply chain bottlenecks.
Redflow chief executive officer and managing director, Tim Harris said Ameresco is looking beyond conventional lithium technologies. “Our zinc-bromine flow battery offers a non-lithium solution that is fire-safe, has an innovative hibernation feature, and suits a wide range of environments and use cases.”
Photo: courtesy of Redflow Limited