Beat me to it. If you want to get pedantic, the DC side of them is somewhat higher than 480Vac, but it's still multiple orders of magnitude away from 1MV, let alone 60MV.Err, 60MV? 100MV? ... 100 million volts?! I know this is April 1st, but this is fundamentally wrong. Tesla Megapacks typically operate in the 400-480V range (AC 3-phase). Perhaps you meant megawatt-hours? ie: 60 MWh? 100 MWh?
The release says right there it's 240MWh, so it's not 60MWh. The only thing left is 60MW, which you could also guess from it being a 4-hour 240MWh battery.