▲ 491 ▼ Switzerland dug a hole the size of two soccer fields to install the world’s most powerful underground battery, able to output 1.2 GW within milliseconds. (www.ecoticias.com) submitted 4 months ago* (last edited 4 months ago) by Gsus4@mander.xyz to c/technology@lemmy.world 133 comments fedilink hide all child comments