Portland, ME benchmarking compliance, filed for you
The Portland, Maine Energy and Water Benchmarking Ordinance requires covered buildings to report energy and water use every year. We gather the data, check it, and file it — usually within a week.
Who’s covered
Commercial and multifamily buildings of 20,000 sq ft or more (multi-tenant buildings since 2025), and city buildings of 5,000 sq ft or more.
Annual deadline
May 1 for the previous calendar year. Recent deadlines have fallen in late April — we confirm each year.
Verification
No routine third-party verification — but the program runs its own data checks, so accuracy still matters.
Penalties
$20 per day.
What to report
All energy and water used by the whole building — including tenant spaces — for January 1 to December 31:
- Electricity — every meter serving the building
- Natural gas
- District steam, hot or chilled water, if you have it
- Delivered fuels (oil, diesel, propane) — all delivery receipts for the year
- On-site solar production, if any
- Water — whole-building water use
Leave out backup generator fuel. Note any meters added or removed during the year.
What we’ll need from you
- Building address, plus any utility service addresses that differ from it
- Gross floor area for the whole building and each use (office, retail, residential…), number of units and year built
- Your Portland Building ID (we can look it up)
- Utility data for the full calendar year, January 1 – December 31 (usually 13 months of bills)
- If tenants pay their own utilities: whole-building (aggregated) data from the utility, or signed tenant authorization forms
- Access to your ENERGY STAR Portfolio Manager account, if you have one
- Any notice or letter you received about this law
Portland, ME benchmarking questions
When is the Portland, ME benchmarking deadline?
Does Portland, ME benchmarking apply to my building?
What happens if I miss it?
Official program information: Portland, ME benchmarking website. Requirements change — we confirm current rules for every filing.