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MassDEP explains quarterly emissions reporting requirement for heating fuel suppliers
Summary
The Massachusetts Department of Environmental Protection said heating fuel suppliers must register with the state's Clean Heat and Emissions Tracking System, or CHETS, and submit quarterly greenhouse gas emissions reports under 310 CMR 7.71, a regulation that took effect in November 2024.
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The Massachusetts Department of Environmental Protection said heating fuel suppliers must register with the state's Clean Heat and Emissions Tracking System, or CHETS, and submit quarterly greenhouse gas emissions reports under 310 CMR 7.71, a regulation that took effect in November 2024.
The guidance, presented in a MassDEP instructional video, says suppliers must report the total quantity of each heating fuel they delivered to locations in Massachusetts for each quarter and that the first reporting deadline is June 2. "If you are a heating fuel supplier, you are required to register your business," the presenter said.
Why it matters: The reporting requirement will make suppliers provide standardized supply data that state regulators will use to calculate greenhouse gas emissions tied to heating fuels. The presenter said the CHETS system will convert volumes to emissions using predetermined emissions and conversion factors.
What suppliers must report: Suppliers must report totals by fuel type and by reporting period in either gallons or standard cubic feet. Reportable fuels listed in the video include fossil heating oil, propane, natural gas, waste-based advanced biofuel, waste-based renewable diesel and other advanced biofuel that is not renewable diesel. The presenter said, "You will be required to submit quarterly emissions reports based on the amount of heating fuel your business supplied to locations in Massachusetts." The video directs suppliers to the MassDEP FAQ for detailed fuel-type descriptions.
How emissions are calculated and certified: The presenter said the CHETS interface will multiply the volume entered by fuel-specific emissions and conversion factors and display the emissions values on-screen. The video states the emissions factors used are from 40 CFR part 98. Before filing, the supplier must certify the emissions calculated by the system.
Record-keeping, preparation and deadline: The video advises suppliers to collect delivery tickets, shipping documents, customer bills and any records of biofuel content and to retain those records for five years. The presenter also told viewers they should add up total amounts delivered to Massachusetts for the reporting period (individual delivery tickets need not be uploaded), and to make sure they can log in with the same CHETS credentials used at registration. The presenter said these steps will help suppliers meet the first reporting deadline on June 2.
Contact and support: The video gives a MassDEP support email (dep.chets@mass.gov) and phone number ((617) 227-1017) for suppliers with questions about reporting requirements.
MassDEP included references to the state regulation and the federal emissions factors but did not announce changes to those authorities in the video. The guidance instructs suppliers to consult the MassDEP website and CHETS for full instructions and the FAQ for fuel definitions.

