Graeme 🏴󠁧󠁢󠁳󠁣󠁴󠁿 on Nostr: Talk about single point of failure. A failed substation should be a case of switching ...

Talk about single point of failure. A failed substation should be a case of switching around, power issue for an hour tops. Heathrow also had a massive battery backup - I went there as part of a battery monitoring system install, though that was 30 years ago. It was huge - a costco sized warehouse full of racks and racks of cells. I wonder if someone decided it was too expensive in the intervening years?