Also so the temperature can be controlled to make use of cheaper electricity — if you know it's going to be windy from 02:00 to 04:00, then still until 06:00, you can run the freezers a bit extra while the electricity is super cheap.

.. while they leave lighting on around the building and outside for 24 hours a day; they pay for ads who-knows-where.. The efficiency call is galling to me because we have had thirty years to increase efficiency with miracle tech like LED lighting, and yet little has been done.