Long-duration storage developer Invinity says it has doubled stack manufacturing capacity for its vanadium flow batteries at its Bathgate, UK and Vancouver, Canada, sites since December 2020 and plans to double it again by April.

In a trading update, it said project delivery had begun for a 5MWh battery to be delivered to the Energy Superhub in Oxford which would come on line in 2021.

It said UK policy movements in the UK that would “significantly strengthen domestic opportunities”, including the government’s planned competition for long duration energy storage and new ancillary service markets planned for 2021 “which are highly appropriate for technologies capable of high energy throughput such as flow batteries”.

The company also said it had acted to scale-up supply chain resilience for all critical input materials. But it also indicated a shift towards Chinese supply, which included a dedicated supply chain manager located full time in China. This would help “driving down manufacturing costs through increased supply chain competition,” it said.