Massachusetts Moves to Eliminate Gas Pipeline Program That Cut Emissions Less Than 1% a Year
Senate legislation would phase out GSEP spending by November 2030 after Eversource and National Grid data showed barely measurable carbon reductions from the ratepayer-funded program.
Eversource and National Grid have disclosed that their Gas System Enhancement Program reduced carbon emissions associated with natural gas distribution by less than 1% annually in recent years — a figure Massachusetts senators are now using to justify eliminating the program entirely by November 1, 2030.2
The Senate proposal would progressively reduce the spending cap on GSEP projects from its current level of 2.5% of total revenue until the program is wound down at the end of October 2030. That creates a hard conflict with utility planning timelines: the companies currently hold GSEP target completion dates stretching as late as 2039, nearly a decade past the Senate's proposed cutoff.2
The program funds replacement and repair of aging natural gas distribution infrastructure, with costs passed to ratepayers. Utility regulators moved to restrain it in spring 2026, cutting the spending cap from 3% of total revenue and removing a provision that had allowed companies to pass interest payments on above-limit spending directly to consumers. The Senate bill goes further, setting a hard end date rather than simply tightening financial terms.2
At less than 1% annual carbon reduction per utility, the program's output is modest relative to Massachusetts's broader climate commitments. The money flows into gas infrastructure, not electrification or demand reduction. Ratepayers who fund GSEP are, by design, subsidising a system the state's own energy targets treat as a managed decline — a tension the current legislation makes explicit for the first time.2
The House version of the energy bill, passed in February 2026, takes a different route. It does not address GSEP's future at all. Its main provision is a $1 billion reduction in Massachusetts's energy-efficiency program budget, a cut that drew immediate criticism from clean energy advocates who argue the state is simultaneously debating whether to extend gas infrastructure spending while stripping the programs that most directly reduce demand for gas.2
Research from GridLab on new gas infrastructure projects found that unaccounted fixed fuel costs routinely inflate a project's true cost to consumers by roughly 30%, making the economics of gas investment look materially better in official proceedings than they do over the full life of the assets. That analysis applies to new-build projects, not GSEP repair work specifically, but it frames the wider capital allocation debate in which the Massachusetts discussion sits.1
Until senators and representatives reach a conference agreement, utilities face an uncomfortable planning gap. They continue operating under existing spending caps while preparing infrastructure programs that assume completion windows stretching to 2039. If the Senate position prevails, much of that work would need to be accelerated, deferred or abandoned by 2030. If the House position holds and GSEP survives intact while efficiency programs lose $1 billion in funding, the state's gas ratepayers continue to fund repairs of uncertain carbon value with less counterbalancing demand reduction on the other side of the ledger.2
The conference outcome is the near-term variable. Neither chamber's bill resolves the underlying question of whether Massachusetts intends to manage its gas distribution system toward obsolescence or maintain it as a long-term asset. The utilities' own emissions data — less than 1% annual reduction per company from a program designed to justify ongoing ratepayer investment — has handed legislators the sharpest argument yet that the status quo is not achieving what GSEP was built to deliver.2