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Renewable Thermal Alliance

Renewable Thermal Alliance

The Renewable Thermal Alliance’s challenge is straightforward: to develop the infrastructure for large-scale deployment of renewable thermal technologies (RTTs) to reduce greenhouse gas emissions through energy savings and fuel shifting. The Renewable Thermal Alliance (RTA), a public-private partnership initiated by NYSERDA, CT Green Bank, and Yale University, has emerged to coordinate efforts among 200 individual stakeholders throughout the US.  

Renewable heating and cooling are increasingly seen as opportunities to reduce GHG emissions and at the same time increase energy affordability, reliability and resiliency.  Heating and cooling nationwide accounted for respectively 65 percent and 24 percent of energy delivered to residential and commercial customers in 2015 (EIA AEO 2017), is predominantly based on fossil fuels and is hence a high-impact area. Based on the notion that the thermal market is regional rather than state bound, that viable business models can add value, that standardization and harmonization will drive volume and that financing models are central to leverage private capital, a network of stakeholders across states has been established.   

The mission of the RTA is to:

Catalyze and scale a regional market for renewable heating and cooling through the provision of an independent non-profit market-building platform for financing solutions.

Urban Future Lab
Members of the Renewable Thermal Alliance gather at a bi-annual meeting in NYC

The RTA engages stakeholders along the whole value chain for RTTs, including regional government offices, green banks, industry associations, contractors, engineers, investors and other commercial firms. The RTA allows for different levels of engagement.

The RTA is a vehicle for open discussions across RTTs and stakeholders to deliver on high ambitions.

The RTA takes a capital markets’ approach to cultivating a long-term viable market for RTTs. Leveraging private capital is seen as essential to bring the deployment of RTTs to scale. 

The RTA currently has a geographical base in the Northeast parts of Northern America but welcomes stakeholders from all parts of the continent.

The RTA seeks partnership with other RTT initiatives where the mission is shared and synergies can be achieved.


Renewable thermal technologies (RTTs) harness renewable energy sources to provide heating and cooling services for space heating and cooling, domestic hot water, and process heating.


The RTA works to engage through dialogues leading to new partnerships and project initiatives.

Engagement and Dialogue

The RTA engagement platform includes ongoing interaction through an online discussion forum, monthly webinars and in-person meetings twice a year.

Project Initiative - A Renewable Thermal Data Clearinghouse

The market for RTTs is immature and is analogous to where the solar PV market was a decade ago. Key stakeholders lack standardized performance data to be able to evaluate the performance of the technologies, to estimate risk, and to develop new products and business models. 

The overall goal of the initiative is to develop a fully-functional data clearinghouse for RTTs that builds upon existing efforts to standardize energy data and best practices.

The data clearinghouse will be developed as a multi-state project and will integrate standards and best practices for performance attribution with data management. We refer to the initiative as oTherm, with the following elements:

  • Data dictionaries and best practices for RTT performance monitoring based on current efforts, both regional and national. 
  • Consistent and well-documented data quality over time and across state borders.
  • Open and easy access to renewable thermal project data for key stakeholders such as program administrators, policymakers, building owners, academia, manufacturers, Project engineers, installers, entrepreneurs, and capital market participants.

Get Engaged

You can get engaged in the RTA at different levels.

  • Participate in the RTA engagement platforms – gain and share insights from a vast and competent network in the renewable thermal field.
  • Become a partner to project initiatives.
  • Contribute financially to the RTA.

Please contact Stuart DeCew by email for more information. Register for the RTA distribution list here.

Download our brochure!

Shared Resources


Technology glossary



Renewable Thermal Alliance (RTA) has recorded meetings and webinars where different ideas and innovations have been presented. You can access the playlist below.


Previous Events

People & Partners

Stuart DeCew

Executive Director at Yale Center for Business and the Environment
MBA 2011
Master of Environmental Management 2011

Bryan Garcia

President and CEO at Connecticut Green Bank
Master of Environmental Management 2000

Matt Davis

Associate Professor at University of New Hampshire

John Joshi

Director for Financing Solutions at NYSERDA

Program Alumni

Claire Goydan