
The Conservation Law Foundation filed a lawsuit against Vermont Natural Resources Secretary Julie Moore on Tuesday for allegedly violating the stateโs 2020 Global Warming Solutions Act.
In July, the organization gave the state notice that it intended to file the lawsuit, and requested state officials work with them to settle the matter. The state has not engaged in those discussions with the organization, Conservation Law Foundation said in a press release about the lawsuit on Tuesday.
Vermontโs Global Warming Solutions Act put in place legally-binding deadlines for reducing pollution that causes climate change. The law aligns with the international Paris Agreement, which aims to keep global temperatures from increasing by more than 1.5 degrees Celsius. The state must reduce emissions 26% below 2005 levels by 2025, 40% below 1990 levels by 2030 and 80% below 1990 levels by 2050, or face potential lawsuits.
In its 53-page complaint, the Conservation Law Foundation claimed Moore used an inaccurate model to estimate Vermontโs progress in reducing greenhouse gas emissions when she told lawmakers the state is on track to meet the 2025 deadline, and doesnโt need to take additional action.
In an interview with VTDigger on Tuesday, Moore said agency staff โfeel comfortableโ that their approach to measuring the state’s emission reductions โis reasonable.โ She confirmed that the state declined the Conservation Law Foundationโs request to settle the matter before the organization filed suit.
โDifferent models produce different results, and it’s based on a set of assumptions and parameters that are used to populate the model,โ she said.
But the model โis not calibrated based on historic emissions data that the state has, nor the methodology that the state uses to do its own emissions accounting,โ said Elena Mihaly, vice president of the Conservation Law Foundation Vermont. As a result, the model โoverestimates how much emission reductions are actually being achieved,โ painting a rosier picture of emissions reductions than whatโs actually taking place, she said.
The law required Moore to decide by July 1, 2024 whether the state would need to adopt any new rules or regulations to ensure the state met its 2025 deadline.
In her letter to statehouse leaders, dated Dec. 18, 2023 and included in the organizationโs complaint, Moore wrote that the Agency of Natural Resourcesโ Climate Action Office โestimates that Vermont is on track to meet the 2025 climate pollution reduction requirementโ mandated by the law, and therefore, the agency โdoes not need to promulgate any additional rules before the July 1, 2024 deadline.โ

The Conservation Law Foundation wrote in its complaint that, by using faulty modeling, Moore โfailed to complyโ with the law because she knew or should have known the model was โtechnically and mathematically insufficient to reliably predict achievement of the 2025 Reduction Requirement and was not intended for that use.โ
Itโs not the first time the argument has been raised: In January 2024, Jared Duval, Climate Council member and executive director of the Energy Action Network, which analyzes the stateโs emissions data, pointed to what he described as flaws in the stateโs model.
Moore said the state made changes based on Duvalโs comments, and now believes the model is sufficient.
โAfter Jared raised concerns about the analysis, we did review model assumptions with the contractors who had carried out the work,โ she said. โWe made one further adjustment based on that conversation, and feel pretty comfortable that the baseline scenario now fully considers the available data, and relies on a set of model inputs that’s consistent with the approach we’ve used throughout the climate planning process.โ
But in its lawsuit, the Conservation Law Foundation instead pointed to a different, state-commissioned model by the Energy Futures Group that predicted Vermont would not meet the 2025 deadline, and concluded in its complaint that the state should have taken actions to reduce emissions.
Moore said she was โnot in a positionโ to comment on the discrepancy between the Energy Futures Group model and the one the state is using, โnot having personally reviewedโ the former.
Finally, the organization alleged the state did not hold required public hearings related to the findings Moore detailed in her December 2023 letter, and therefore failed to comply with the procedural elements of the law.
Moore said submitting the letter โwas a very public-facing process involving a number of the subcommittees of the Climate Council, and felt that those opportunities had been offered very broadly as part of the Climate Council’s work.โ
Mihaly told VTDigger she hopes an opportunity for settlement โis still on the table.โ
โWe continue to remain open and think that that is a better pathway, to talk things through with the state, than having to go through formal costly litigation, but we feel we don’t have a choice at this point,โ she said.
But Moore said she is โready to defend what I see as very good work being conducted by ANR staff, and would obviously prefer not to need to engage in litigation, but (I) feel strongly that our approach is reasonable and defensible.โ


