Boston’s Building Emissions Reduction and Disclosure Ordinance is now in effect for large commercial buildings. Here’s what the rules mean for your electricity, how your penalty exposure is calculated, and how a simple supply switch can bring you into full compliance.
What Is BERDO — and Who Does It Cover?
Boston’s Building Emissions Reduction and Disclosure Ordinance (BERDO 2.0) is one of the most ambitious building performance standards in the United States. Originally passed as a reporting-only rule in 2013, it was overhauled in 2021 to include hard emissions limits that tighten every five years until reaching net-zero in 2050.
Coverage is based on building size and use type:
- Non-residential buildings 35,000 sq ft or larger: emissions compliance required starting in 2025
- Non-residential buildings 20,000 sq ft or larger: emissions compliance required starting in 2030
- Annual energy and water use reporting is required by May 15 each year, for all covered buildings
- Third-party data verification required in year one and every five years thereafter
- If your building is in Boston and it’s large enough to be covered, you’re already in the compliance window.
key point
BERDO sets limits on carbon emissions per square foot — not on energy use directly. That distinction matters, because how you source your electricity changes your emissions calculation entirely.
How Penalties Are Calculated
If a covered building exceeds its emissions limit, the penalty is $234 per metric ton of CO₂e above the limit. These payments go into Boston’s Equitable Emissions Investment Fund and are not tax-deductible. There is no grace period for the first compliance window — penalties began accruing in 2025.
Emissions limits vary by building type. Here’s what the 2025–2029 window looks like:
| Building Type | Limit (kg CO₂e / sq ft) | Example Size | Est. Annual Penalty if Non-Compliant |
|---|---|---|---|
| Office | 5.3 | 200,000 sq ft | $500,000+ |
| Retail | 7.4 | 100,000 sq ft | $200,000+ |
| Industrial / Mfg | 23.9 | 500,000 sq ft | $1,000,000+ |
| Hotel / Lodging | 7.5 | 150,000 sq ft | $350,000+ |
| Multifamily (35+ units) | 4.6 | 75,000 sq ft | $175,000+ |
Penalty estimates are illustrative, based on the $234/metric ton ACP rate. Fossil fuel emissions excluded.
How Your Electricity Affects Your BERDO Emissions
Under BERDO, electricity emissions are not simply your usage multiplied by a fixed grid factor. They are reduced by the percentage of your consumption covered by Massachusetts Class I Renewable Energy Certificates (RECs). The ordinance uses this formula:
This is the critical insight: a building supplied with 100% MA Class I RECs has zero electricity-related emissions under BERDO. Not reduced emissions — zero. That eliminates the electricity component of penalty exposure entirely.
What Are MA Class I RECs — and Do They Qualify?
Not all renewable energy certificates qualify under BERDO. The ordinance is specific:
- RECs must come from non-emitting sources — wind and solar qualify; biomass generally does not
- The generating facility must have begun operation after 1997
- RECs must be generated within 12 months before or during the compliance year in which they are used
- Bundled RECs must be retired no later than six months after the end of the compliance year
- REC retirement must be documented and tied to the specific BERDO building ID number
common mistake
Buying generic RECs or out-of-region RECs without confirming MA Class I eligibility will not satisfy BERDO. Building owners need documentation of retirement tied to their specific property — not just a certificate that green power was purchased somewhere.
Compliance Options for Electricity Emissions
BERDO gives building owners several ways to address electricity emissions. In practice, most large commercial customers will choose one of three routes:
1
Switch to a BERDO-compliant retail electricity supply
Enrolling in a 100% MA Class I REC-backed supply product from a licensed retail electricity supplier is the most direct and operationally simple path. The supplier handles REC sourcing, retirement, and documentation. Your electricity bill does the compliance work.
2
Sign a Power Purchase Agreement (PPA)
A long-term PPA — either within ISO New England or outside it — can satisfy BERDO requirements if it meets the ordinance’s specific REC eligibility rules. PPAs typically require 10+ year commitments and are better suited to large, single-site customers with predictable load.
3
Make an Alternative Compliance Payment
At $234 per metric ton of CO₂e over the limit, ACPs are explicitly positioned as the compliance option of last resort. For most large commercial buildings, the annual cost of ACPs quickly eclipses the cost of switching to a green supply product.
remember
Renewable electricity only addresses electricity emissions. Natural gas, heating oil, and district steam have separate emissions profiles under BERDO and require their own compliance strategies. A green supply product does not make a building fully BERDO-compliant if it has significant fossil fuel use.
How Gridwealth Electric Helps
Gridwealth Electric is a licensed retail electricity supplier serving commercial and industrial customers in Massachusetts and Rhode Island. We offer a BERDO-compliant green electricity supply product backed by 100% MA Class I RECs — designed specifically so that your electricity emissions are zero under BERDO’s compliance framework.
What’s included:
- 100% MA Class I REC-backed electricity supply
- REC retirement executed on behalf of the specific building
- Annual REC retirement documentation for BERDO reporting
- Fixed and index pricing structures available
- Competitive pricing relative to utility default green programs
- Broker-supported enrollment — your energy consultant manages the process
Next Steps for Building Owners and Managers
Confirm whether your building is covered
Non-residential buildings 35,000+ sq ft face 2025 compliance. Buildings 20,000–34,999 sq ft face 2030. Check Boston’s BERDO building list or consult your energy broker.
Estimate your penalty exposure
Use Gridwealth’s free BERDO penalty calculator to estimate your annual emissions relative to the limit for your building type — and see what switching to a green supply product does to that number.
Compare the cost of action vs. inaction
For most buildings, the premium for 100% MA Class I green supply is a fraction of the ACP penalty. Your energy broker can model both scenarios side-by-side.
Enroll with Gridwealth Electric
Contact us directly or through your energy broker. We handle REC sourcing, retirement, and annual documentation — so your BERDO reporting reflects zero electricity emissions.
Report your zero electricity emissions in your BERDO filing
Use the annual REC retirement documentation we provide when completing your BERDO Reporting Form and Energy Star Portfolio Manager submission by May 15.
Disclaimer: This content is for informational purposes only and does not constitute compliance, legal, or financial advice. BERDO compliance involves electricity emissions and fossil fuel emissions — this article addresses electricity only. Building owners should consult qualified energy professionals and legal counsel to develop a complete BERDO compliance strategy. Penalty estimates are illustrative based on published ACP rates and emissions limits for the 2025–2029 compliance period.