Comparing sites without a league table
Committees love a ranking. Buildings are not athletes. Floor area, opening hours and a flooded basement all belong in the same sentence as the kWh.
A multi-site comparison is a set of aligned years, not a podium. We refuse to colour the highest user red unless you have already defined a fair intensity measure and the floor areas are measured the same way.
Net internal area from a 1998 letting brochure and gross external area from a recent survey do not belong on the same axis. We pick one definition and list the buildings that still lack a measured area.
A depot that added a night shift in November will look worse than a locked pavilion. The commentary should say so before anyone proposes a “behaviour campaign” for the night crew.
Shared boilers that serve two postal addresses are a frequent source of false villains. We draw the heat where the flue is, then allocate in a table you can argue with, rather than hiding the split in a footnote.
If you need a ranking for an internal prize, that is a different document and should not share a cover with the usage report. Mixing them trains people to game the chart instead of reading the plant notes.