Why then the open door policy? This morning it is -6C and once again the front door of the Co-op/Sommerfield is literally open for business and will stay like that until closing time. How much more energy do you have to use on heating when you leave the front door open? 50%, 100% or 200% more? Obviously the cash loss from heat going out of the door is no problem to the Co-operative.
The Co-op make great store out of their efforts to fight climate change. A page on their website specifically mentions energy efficiency:
"The Co-operative is among the world’s leading businesses when it comes to taking up the challenge of tackling global climate change. Our approach to the issue is five-fold, focusing on energy efficiency, renewable energy consumption and generation, carbon offsetting, the provision of finance and public policy lobbying. "
You can read the Co-op's climate change policy here. Perhaps the 750K investment didn't reach to a decent set of sliding doors?