https://www.techspot.com/news/107021-europe-largest-battery-site-goes-live-scotland-boosting.html

>> Wärtsilä's Quantum energy storage

Interesting. Never heard of them, but the modular units designed around a standard shipping-container size is pretty cool

I'm still waiting for more innovative storage solutions (like hot brine or whatever) to come online, but maybe the inefficiencies are too high or the engineering challenges too great.