Only just heard about this - a town in Norway has installed motion sensors on its street lights so that they will dim when no one's around, reducing power consumption and light pollution. This was back in 2018, wonder if it's caught on elsewhere in the country?
https://en.reset.org/town-norway-saving ... -01032018/
Self-dimming street lights
Self-dimming street lights
Tesla Model 3 Performance
Oversees an 11kWp solar array at work
Oversees an 11kWp solar array at work