US utility Dominion Resources is to install zinc iron redox flow batteries made by Vizn Energy onto a micro-grid to test their suitability for integrating solar onto a local circuit.
A team at Harvard is pursuing a metal-free battery chemistry based on organic molecules called Quinones. The technology potentially offers an abundant and safe material to use for scaling up flow batteries, but according to the energy storage team at Lux Research in Boston, there are significant limitations based on project cost.