It's another sign that, as we've recently discussed, solar is booming.
The main reason is China, which has so thoroughly flooded the global market with cheap parts that today, Europe slapped them with a new tariff.
As Bloomberg's Bruce Einhorn wrote last year, "China’s solar panel industry has become the world’s biggest thanks to a simple formula: Produce in China, sell in Europe."
But there are other signs that solar power is set to take off.
We've compiled some of them here.