Networked geothermal is a rapidly evolving field, informed by research, pilot projects, utility experience, and public policy at the local, state, and federal levels. The resources below are intended to support utilities, policymakers, and project partners seeking a deeper understanding of networked geothermal systems and their role in efficient, resilient energy infrastructure.
These materials represent a mix of industry guidance, technical research, policy analysis, and real-world project examples. UNGC will continue to expand this library as new resources become available.
Technical & Concept Resources
Thermal Energy Networks FAQ (Building Decarb Resource Library)
Explains how networked geothermal and broader thermal energy networks work, including how networked systems trade heat between buildings and reduce waste. BDC Library Link
National Renewable Energy Laboratory (NREL) – Heating, Cooling & Storage Technologies
Overview of geothermal heating/cooling and Thermal Energy Networks (TENs) including modeling, performance, and integration with utility systems. Website Link
Networked Geothermal Wiki (GastoGeo)
Detailed definitions and design considerations for networked geothermal, thermal energy networks, system components, and scalability. Includes links to PDFs and templates for decision tools. gastogeo.wiki
Research & Case Studies
Illinois Commerce Commission – Thermal Energy Network Report (2024)
A foundational regional study addressing building typologies, existing systems, and utility program implications — useful case/context for Midwest utilities. PDF Report Download
Geothermal District Heating in the United States: 2021 Update (NREL/GeoHeat Center)
Comprehensive look at the U.S. geothermal district heating landscape, system performance, history, and policy barriers — relevant background for networked geothermal planning. PDF Report Download
Networked Geothermal: The National Picture (HEET Blog)
Overview of early utility engagement with networked geothermal across the United States, including collaborative learning and pilot momentum. Article Link
Policy & Deployment Context
DOE – Geothermal District Heating & Cooling
A federal overview of geothermal district energy deployment in the U.S., examples across states and campuses, and DOE District-Scale Geothermal Energy Pilots. Visit Website
Thermal Energy Networks Policy Dashboard
Interactive summary of U.S. state policies on thermal energy networks, including regulatory developments that impact utility pilots and cost recovery structures. Visit Website