The big picture: The rapid scaling up of battery technology is a game-changer for ... a trend that's transforming the nation's power grid. Altogether, the US has added over 20 gigawatts of battery ...

And even as we wait for the bigger picture ... grid operator Red Eléctrica: One of the theories floating around is that things went wrong because the grid diverged from its normal frequency. (All ...

In December, the team made history by achieving the fusion Holy Grail of ignition, or drawing more power from the reactor than they put in — a key step toward powering the grid with fusion ...

But the storm also affected radio and some cellular phone service and caused power grid irregularities and problems with GPS systems. “We didn’t see any wide-scale power issues during that ...