About 113 GWh, apparently. Total power usage is 400-500 TWh. So a drop in a bucket, but many of these measures will add up to a couple of percent. No idea how

About 113 GWh, apparently. Total power usage is 400-500 TWh. So a drop in a bucket, but many of these measures will add up to a couple of percent. No idea how much energy it takes to reprogram/renew the signs. If they just turn them off, very little, I suppose.