100-hour iron-based storage system connects to a regional grid
A multi-day storage installation using iron chemistry begins supplying a utility under a capacity arrangement.
Why it matters
Four-hour lithium batteries shift solar into the evening but cannot cover a still, cloudy week. Storage that discharges for days is what allows wind and solar to replace gas rather than merely supplement it.
Source
Huburb demo record. This is a development-phase placeholder record; no external source is attached and none has been invented.