While the effectiveness of flow batteries in islanded situations is quickly being recognised, on the grid, the cost of providing that storage is still seen as something of an inhibitor to uptake. Andy Colthorpe spoke with the RedT CEO, Scott McGregor, to get his views on how flow batteries can thrive – and why lithium-ion is not the enemy.

A small municipal utility will be the recipient of what is thought to be one of the first US projects to try out a combination of revenue streams from a storage battery linked to a solar farm.