Connecticut Is Overlooking Its Most Affordable Clean-Heat Solution
Written by: Emily Khym, Yale College '27
Connecticut residents are often hit with the highest utility bills in the country. Yet, we’re overlooking one of the most cost-effective solutions: thermal energy networks that could cut heat bills, reduce emissions, and modernize our aging pipelines.
Thermal energy networks are neighborhood heating systems that use underground pipes and heat pumps to deliver clean, affordable heating and cooling. Connecticut passed An Act Concerning Energy Affordability, Access And Accountability during the 2025 legislative session, authorizing the Commissioner of Energy and Environmental Protection to create a grant and loan program for thermal energy networks. However, because the legislature did not appropriate funding for the program, it currently has no ability to issue grants or loans. Localities such as New Haven have plans to pilot a thermal energy network in Union Station. However, federal funding cuts have left uncertainties with the continuation of the project.
These local efforts show what’s possible, but they also highlight a broader challenge: Connecticut lacks a statewide framework to support and scale thermal energy network projects. Without consistent policies and long-term planning, it will be difficult to make thermal energy networks widely accessible, lower heating costs, and avoid billions in unnecessary gas spending. That’s why this upcoming legislative session is so critical. Legislators should enable authority and allocate funding towards thermal energy networks.
Eight states, including our neighbors Massachusetts and New York, have already passed laws authorizing gas utilities to become heat utilities, giving them clear authority to build and operate thermal energy networks. Massachusetts is a leading example of what this kind of statewide framework can unlock. Its Framingham thermal energy network pilot, led by Eversource, is projected to reduce customer heating bills by roughly 20 percent and cut carbon emissions by 60 percent compared to traditional gas systems. Connecticut, by contrast, has not yet passed enabling authority. As a result, every pilot must navigate a lengthy and uncertain approval process, discouraging utilities from investing in these projects even as our pipelines age and energy prices continue to rise. Passing enabling authority would put Connecticut on a real path to modernizing its heating infrastructure, lowering costs for residents, and ensuring that the state doesn’t fall behind others that have already acted.
Connecticut has already taken the important step of creating a grant program for thermal energy pilots but without any funding behind it, the program exists only on paper. To make meaningful progress, lawmakers should pair enabling authority with real investment. Otherwise, utilities will remain stuck at the pilot stage. Eversource, Connecticut’s primary utility, has already carried out a highly promising thermal network pilot in Massachusetts that can be funded by the state’s pipe replacement program. Thus, Connecticut should fund the program it created and pass enabling authority so utilities can replicate these successful models here rather than leaving ratepayers to shoulder the cost of an aging gas system.
Connecticut’s energy transition is complex, and gas utilities operate under real regulatory constraints. Not every community will adopt thermal networks immediately, and the initial investment may seem significant. However, continuing to rely on fossil fuels and invest in aging gas pipelines will only become more expensive over time and it provides no relief to residents already facing some of the highest utility bills in the country. Thermal energy networks, by contrast, are a safer, more cost-effective alternative that aligns with Connecticut’s climate goals.
We also know that thermal energy networks work. Pilot programs in Massachusetts and other neighboring states are already delivering lower utility bills and cutting emissions for residents. This upcoming legislative session, Connecticut must prioritize thermal energy networks not only by granting utilities the authority to carry out pilots, but also by allocating funding to the grant program that was established last year. Doing so will give the state a clear path to modernizing its heating infrastructure while keeping costs down for residents.