I've always said energy storage is about more than just batteries, although of course they dominate the present roll out and news pages. This looks like a great CEAS (Compressed Air) project to be deployed in Northern Ireland. I hope it gets underway and proves to be commercial. There are a large number of salt caverns in Cheshire and many other places in the UK that could be put to good use for utility scale energy storage. Not sure why they chose a robot voice for the animation though!
An energy storage project in Northern Ireland which will use compressed air has received an additional €8.3 million in funding from the EU. The site location is near the town of Larne on the Islandmagee peninsula, and the project developer is Gaelectric. (Larne is a port town with a population of about 32,000.) Based on this extra funding amount, one might not expect the storage capability to be that great, but reportedly it will be 330 MW of generation capacity for a duration of six to eight hours, which might be enough to provide electricity for about 200,000 homes. For the energy storage, compressed air will be placed in engineered caverns about 1.5 kilometers below ground level.