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Home » Authors » Jay Egg
Jay Egg

Jay Egg

Jay Egg is a consultant and designer of geothermal HVAC systems, in addition to being author of two books and several articles on the subject. He is the Founder of Egg Geo, LLC, and focuses on geothermal advocacy, engineering,  and educational efforts. He can be reached at [email protected] or egggeo.com.

Articles

ARTICLES

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Geothermal HVAC

The Geothermal Advantage: Why the Smallest Footprint is the Biggest Opportunity

The underground infrastructure allows deployment in space-constrained areas without major surface disruption.
December 1, 2025
Jay Egg and Mimi Egg

Explore why geothermal energy—thanks to its tiny land footprint, round-the-clock reliability, and seamless integration with solar, wind and urban thermal networks—is emerging as a cornerstone of a sustainable, resilient, high-density clean-energy future.


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Geothermal HVAC

The Billion-Gallon Opportunity: How Geothermal Exchange Can Solve the Refinery Water Crisis

With financial incentives from the Inflation Reduction Act, this technology not only mitigates environmental and operational risks but also creates opportunities for refineries to become community energy assets.
November 3, 2025
Jay Egg and Mimi Egg

As refineries confront mounting heat and water challenges, geothermal exchange is emerging as a game-changing solution that can slash water use, boost resiliency and turn industrial waste heat into a valuable community asset.



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Geothermal HVAC

Bridging Geothermal Horizons Through Unified Innovation

With strong policy support and the development of TENs, geothermal is poised to become a cornerstone of the U.S. renewable energy landscape.
July 1, 2025
Jay Egg

With strong federal backing and growing collaboration between low- and high-temperature technologies, the geothermal industry is poised to reshape America’s energy future through integrated thermal networks that boost efficiency, resilience and sustainability.


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Geothermal HVAC

Thermal Energy Networks: Bridge Technology for Sustainable Energy Solutions

Five significant gatherings across various locations highlight the growing importance of geothermal technology in urban energy systems.
April 3, 2025
Jay Egg

Thermal energy network events in early 2025, including five significant gatherings across various locations, highlight the growing importance of geothermal technology in urban energy systems. 


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Geothermal HVAC

An Update on the IRA and Geothermal Systems

The legislation made the Investment Tax Credit and Production Tax Credit more valuable and expanded the types of qualifying projects.
January 6, 2025
Jay Egg

The Inflation Reduction Act offers significant incentives for geothermal HVAC projects through 2032, including tax credits and direct funding.


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Geothermal HVAC

Electricity or Thermal Energy?

TENs make it possible to significantly reduce electrical demand and level of electricity consumption year-round.
November 1, 2024
Jay Egg

Decarbonizing buildings and industry is crucial for reducing global energy consumption, predominantly in the form of heat. Thermal energy storage plays a significant role in this process by reducing reliance on electrical energy and batteries. Thermal energy networks that connect multiple buildings into a shared energy network can significantly reduce electrical demand and consumption.


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Geothermal HVAC

Wastewater Energy Transfer Hits the Big Time

This technology, which extracts the heat by sending wastewater through a heat exchanger, is closely related in concept to ERVs.
July 7, 2024
Jay Egg and Kristy Egg

Wastewater energy transfer has risen to the top as a preferred initial method to begin the decarbonization efforts for commercial buildings and thermal energy networks of all types and sizes.


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Feature

Pipefitters Union Brings Strength to National Uptake of TENs

Countless building trades are assured of plentiful and high-paying jobs as utility thermal energy network systems continue to roll out.
June 3, 2024
Jay Egg
With the backing of the United Association plumbers and pipefitters union, utility thermal energy network systems were given a chance in New York as the Utility Thermal Energy Networks and Jobs Act of 2022 became law on July 5. Jay Egg explains how these energy networks can help the building trades and consumers.


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Geothermal HVAC

Perfect TENs

Geothermal heat pumps tied into building loops and thermal energy networks will be as simple as installing window air conditioners or washing machines.
May 6, 2024
Mimi Egg and Jay Egg

Thermal energy networks can increase the value of other heating/cooling industry opportunities: increased employment of pipefitters and mechanical engineers, repiping of old buildings, improvements in heat pump design, wastewater system design with heat transfer, geothermal heat pump training and quality inspections.  


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Geothermal HVAC

Thermal Energy Networks Take Shape in Rochester, Minnesota

The city has pledged to reduce greenhouse gas emissions by 100 percent over the next three decades.
February 5, 2024
Jay Egg and Mimi Egg

This city, which prides itself on progressive, bold and community-centered ideas, uses geothermal and thermal energy networks to help reach its goal of 100 percent reduction in greenhouse gas emissions over the next 30 years.


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