A five-stop concert tour in Quebec ran entirely on two Chevrolet Silverado EVs and a 150 kWh mobile power plant this summer. No diesel generator, and no hookup to the grid.

I went to the final show, held in a grocery store parking lot in Montreal’s Saint-Henri neighborhood, and everything from the speakers to the stage lights to the kitchen was running off batteries.

Australia just switched on its longest-duration grid battery, and it runs on 144 Tesla Megapacks.

RWE’s Limondale battery in New South Wales can discharge for a full eight hours — four times longer than the two-hour batteries that dominate the Australian grid. It’s the first project of its kind in the country.