Guide Electricity Generator Emissions Limits (310 CMR 7.74)

This regulation establishes a declining limit on carbon dioxide (CO2) emissions from large power plants in Massachusetts. The limit ensures that state programs, including the Clean Energy Standard, reduce greenhouse gas emissions.

Current Regulation

Note: MassDEP has proposed amendments to these regulations. See them here.

310 CMR 7.74: Reducing CO2 Emissions from Electricity Generating Units was finalized in August 2017 and amended in December 2017.

Electricity Sector Regulations Fact Sheet

Frequently Asked Questions: 310 CMR 7.74

See 310 CMR 7.00: Air Pollution Control, which includes the current Electricity Generating Units regulation.

Key Actions for Current Regulation

Stakeholder Input

In fall 2017, MassDEP and the Executive Office of Energy & Environmental Affairs (EEA) solicited stakeholder comment on auction design. MassDEP and EEA will consider these comments as they develop procedures in preparation for allowance auctions that will begin in 2019.

Stakeholder Document: Allowance Auctions

Stakeholder Meeting Presentation: Allowance Auction Design

Initial Stakeholder Comments: Allowance Auction Design

Final Stakeholder Comments: Allowance Auction Design

Rulemaking Documents

MassDEP proposed amendments to 310 CMR 7.74: Reducing CO2 Emissions from Electricity Generating Units on April 6, 2018. The agency will hold a public hearing on May 3, 2018, in Boston, and accept public comment through May 14, 2018.

Proposed Amendments

Technical Support Document

Attachment A: Proposed Allocations

Notice of Public Comment Period & Hearing

310 CMR 7.74 was finalized in August 2017. Combined rulemaking documents for 310 CMR 7.74 and 7.75 are available here. 310 CMR 7.74 was subsequently amended in December 2017.

Final Amendments

Technical Support Document

Response to Comments

Reporting Forms

Forms needed to comply with 310 CMR 7.74 are available below. To access the electronic allowance registry currently under development, facilities will need to mail a notarized Certification of Representation to:

MassDEP Bureau of Air & Waste
One Winter Street, 7th Floor
Boston, MA 02108


Attn: Will Space

Additional Resources for Reporting Forms

Supplemental Information

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