[snewman]

Bear in mind that grid electricity is getting cleaner over time. We need to skate to where the puck is going, which is 100% clean electricity. Now is an excellent time to be developing and preparing to scale technologies that work well with clean electricity.

[HPsquared]

Yes - in theory, it's probably pretty efficient. Just would be interesting to see how it compares. We know it has good Coulombic efficiency, but that's only half the picture - at least for energy storage / synfuel applications.