Talking gas leaks and GENs research at BARI25
HEET’s Director of Methane Emissions, Katherine Fisher, and former HEET fellow, Mahsa Ghandi presented their research at the Boston Area Research Initiative Conference 2025 (BARI25) in April. Katherine presented on the effectiveness of Massachusetts' 2019 Shared Action Plan (SAP), which mandates utilities to prioritize the repair of gas leaks with Significant Environmental Impact (SEIs). This plan emerged from collaborative efforts between many entities including HEET, the Gas Leaks Allies, and the gas utilities. Read more about the Shared Action Plan here.
The SAP introduced the leak extent method, a cost-effective way to rank leaks by volume, enabling the identification of high-emitting leaks independent of explosion risk. By analyzing utility reports and conducting independent measurements, researchers aim to quantify the SAP's impact on methane emissions. Preliminary findings from utility data indicate a promising 46 percent reduction in emissions from SEIs between 2021 and 2024. Given that SEIs contribute roughly half of the total system emissions, this suggests a substantial step towards mitigating greenhouse gas emissions from Massachusetts' gas infrastructure. We plan to publish the complete study and will share it with you in this newsletter.
Mahsa’s presentation focused on a recent study employing Life Cycle Assessment (LCA) comparing geothermal energy networks (GENs) with conventional HVAC systems, revealing promising environmental benefits. Focusing on the entire lifecycle, from production to disposal, the research highlights the potential of GENs to significantly reduce greenhouse gas emissions, particularly in states like Massachusetts that are grappling with aging gas infrastructure.
Building on these insights, future work will analyze the Framingham GEN using Eversource data to comprehensively evaluate distribution infrastructure. This LCA approach aims to provide policymakers with clear data on the comparative advantages of GENs, guiding Massachusetts towards a more affordable, resilient, and safe thermal energy future.
