At the end of December, the person manning the digital boards at PSE, Poland's national electricity operator, noticed a flurry of solar stations suddenly flicker off grid.
Poland in the dead of winter can be a gloomy place. But the grid wasn’t seeing a drop-off in generation in line with the recent solstice. These were full disconnections, synchronized, at a time when the grid needed the power..
"They thought it was just a malfunction of the device because the plant was still producing power,