Public buildings cost more to heat every year and nobody knows which ones

Current situation

The municipality pays energy bills for roughly two hundred buildings from a single budget line. There is no per-building consumption record, no floor area register that matches the billing accounts, and no way to tell a badly insulated school from a badly operated one.

What the city is trying to reach

A per-building consumption baseline, a ranked list of buildings by cost per square metre, and a defensible first tranche for renovation.

Constraints

• No dedicated energy manager in the administration
• Billing data held by three separate suppliers