Heating and cooling will be significantly more than a normal store.
And lights will be required much of the time, in fact I bet they have them on all the time regardless. It is a waste of space and very ungreen
Spoken as someone without any actual idea or knowledge how they actually intend to light, heat and cool the place. For all you know, they have solar panels or wind turbines hidden on top and the whole damn thing will be largely self-sufficient. All we know is what we see here. And that's bugger all.
Facts. How about we base stuff on facts instead?