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Proceedings from the CampusEnergy2025 Workshop: Advancing Geothermal & Geo-Exchange Energy Solutions. This workshop took place on Monday, February 3, 2025 in Boston, MA.
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Contains 3 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop, Session 1
Contains Panel: Geothermal Leadership in Massachusetts
Advancing Geothermal & Geo-Exchange Energy Solutions Workshop, Session 1: Geothermal Leadership in Massachusetts: An Inside Look
Panelists Include:
Nikki Bruno, Vice-President, Clean Technologies, Eversource
David DeSwert, Executive Vice President for Finance and Administration, Smith College
Dano Weisbord – Chief Sustainability Officer, Tufts University
Nikki Bruno
Eversource
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Katherine Antos (Moderator)
Undersecretary for Energy & Environmental Affairs
Office of Energy Transition
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David DeSwert
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Dano Weisbord
Chief Sustainability Officer/ ED Campus Planning
Tufts University
Dano Weisbord joined Tufts in 2022 and serves as Chief Sustainability Officer and Executive Director of Campus Planning. This joint role is intended to further Tufts’ commitment to be a higher education leader in sustainability and climate.
Dano came to Tufts from Smith College where he was Associate Vice President for Campus Planning and Sustainability. Dano was responsible for projects at Smith including the electrification and decarbonization of a thermal and electric district energy system and a Landscape Master Plan. Earlier in his career, Dano worked for CLF Ventures, the former consulting arm of the Conservation Law Foundation. In that capacity he worked on projects around Boston in energy and real-estate sectors. Dano spent four years aboard working for ActionAid International and served as a director of the Global Association of Corporate Sustainability Officers in London.
Dano has a Master of Arts in Urban and Environmental Policy and Planning from Tufts and a Bachelor of Fine Arts in Industrial Design from Rhode Island School of Design.
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Contains 6 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop Session 2
This session consisted of a 3 segment presentation on the Princeton University TIGER Geo-Exchange Project. Princeton University, Burns & McDonnell, and Whiting-Turner will share the story of design, construction, and first year operating data on Princeton University's new geo-exchange utility resource. TIGER consists of nearly 600 geo-exchange bores, each 850 ft deep, and two 2.25 million gallon TES Tanks, connecting to a system supplying 3,400 tons of heating & cooling to campus. This is the beginning of the conversion that the University is tackling as part of their goal of carbon neutrality. Segments include "how we got here"/construction, commissioning & flushing, and "state of the TIGER" - a showcase of >1 year of active operating data.
Case Studies: Princeton University
Keywords: geo-exchange, thermal energy storage, university
9:00 am – 9:30 am
How We Got Here: Construction & TES – Brooke Lautt, Megan Mikrut, & Michael Brault, Whiting-Turner
9:30 am – 10:00 am
System Commissioning & Flushing –Justin Grissom, Burns & McDonnell; Chris Pauzer, Whiting-Turner
10:00 am – 10:35 am
Princeton University State of TIGER – Ted Borer, Princeton University; Ralph Merritt, Whiting Turner
Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.
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Brooke Lautt
Project Manager
The Whiting-Turner Contracting Company
Brooke Lautt is a Project Manager at The Whiting-Turner Contracting Company. She received her BS in Civil Engineering from Lehigh University in 2019, and started working at Whiting-Turner immediately following graduation. She worked on the Princeton University TIGER project for the beginning of her career, focusing on the geo-exchange installation, and is currently working on an engineering & science project for the same client.
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Megan Mikrut
Project Manager
The Whiting-Turner Contracting Company
Megan Mikrut is a Project Manager with The Whiting-Turner Contracting Company, specializing in renewable energy. She has an engineering degree in Civil Engineering from the University of Delaware.
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Michael Brault
Project Manager
Whiting-Turner
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Justin Grissom, PE, CEM
Department Manager
Burns & McDonnell
Justin currently serves as a Senior Mechanical Engineer and Department Manager in Burns & McDonnell’s OnSite Energy and Power Group. To this role, he brings diversified experience in the management and design of large decarbonization/electrification and district energy and power projects. His technical expertise lies in central cooling plant design, utility and energy planning, energy system modeling, sustainability, and energy conservation.
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Chris Pauzer
MEP Project Manager
Whiting-Turner
Chris Pauzer is an MEP Project Manager for the Whiting-Turner Contracting Company. He has been involved with Mission Critical projects in the mid-west, and was most recently the MEP Project Manager for the Princeton University TIGER project, overseeing commissioning, flushing, and MEP installation. Chris is a graduate from Elizabethtown University.
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Ted Borer
Energy Plant Director
Princeton University
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Ralph Merritt
Senior M/E Manager
Whiting-Turner
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Contains 6 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop Session 3
Contains presentations:
The Importance of Training in the Growth of the Geothermal Heat Pump Industry – Jeff Hammond, International Ground Source Heat Pump Association; Alternative Thermal Energy Networks for Campus Decarbonization – Mitch DeWein, CHA Consulting, Inc; Exploring Thermal Energy Networks for Campus Decarbonization in the US – Megan Lim, MIT Alumni for Climate Action; Isabel Varela, HEET
Advancing Geothermal & Geo-Exchange Energy Solutions Workshop, Session 3: Early Stage Considerations. This session contains the following presentations:
11:05 am – 11:30 am
The Importance of Training in the Growth of the Geothermal Heat Pump Industry – Jeff Hammond, International Ground Source Heat Pump Association
As the world moves towards decarbonization, technologies like geothermal heat pumps are becoming more popular due to the lower peak demand requirements, and less impact on the electric grid compared to other technologies. However, as the technology is more widely accepted as a solution, it is crucial that engineers understand the design of the ground heat exchanger. Mechanical engineers typically have a good understanding of HVAC design and thermodynamics, but generally do not have experience or education related to ground heat exchanger design. Available training to help bridge this gap will be discussed in this presentation.
Keywords: geothermal heat pump training, ground source heat pump training, geothermal heat pump, GHP, ground source heat pump, GSHP, ground heat exchanger, GHX, GHEX
11:30 am – 11:55 am
Alternative Thermal Energy Networks for Campus Decarbonization – Mitch DeWein, CHA Consulting, Inc
Thermal Energy Networks have advanced over the last several years to being the preferred District Energy application on campuses. These systems bring a level of flexibility that has not been matched in prior systems, leveraging a wide variety of thermal energy resources like ground heat exchange, sewer or effluent water, surface water and other forms of heat recovery through a common loop. This presentation will outline an approach to developing these systems, considering the potential barriers to development and implementation as well as many available resources which can be leveraged to eliminate or mitigate those barriers. The presentation will incorporate case studies of Massachusetts-based campus thermal energy networks as examples.
Keywords: Thermal Energy Network, Geothermal, Sustainability
11:55 am – 12:20 pm
Exploring Thermal Energy Networks for Campus Decarbonization in the US – Megan Lim, MIT Alumni for Climate Action; Isabel Varela, HEET
While thermal energy networks are being installed on campuses and in communities around the world to improve energy efficiency and minimize emissions, many more can be adopting it. Our presentation focuses on what thermal energy networks are and how university campuses in particular could leverage them to reach their decarbonization goals, potentially making a "thermal transition leapfrog." We will share campus case studies of 1-pipe and 2-pipe systems, including Colorado Mesa, MIT, and Weber State. We will also share why campuses are the perfect anchor tenants for thermal energy networks!
Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.
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Mitch DeWein, CEM (Moderator)
Vice President, Business Practice Leader - Generation & Energy Management
CHA Consulting, Inc
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Jeff Hammond
Executive Director
International Ground Source Heat Pump Association
Jeff Hammond is Executive Director at the International Ground Source Heat Pump Association (IGSHPA), a non-profit, member-driven organization established in 1987 to advance ground source heat pump (GSHP) technology on local, state/provincial, national, and international levels. Jeff earned a B.S. in business administration from the University of Saint Francis in Fort Wayne, Indiana, and an A.A.S. in electrical engineering technology from Purdue University. He joined IGSHPA with 35 years’ experience in the ground source heat pump (geothermal) industry, including positions at ClimateMaster, Enertech, Geo-Flo, and WaterFurnace. Jeff is a member of ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers), AEE (Association of Energy Engineers), ASAE (American Society of Association Executives), and has served on CSA (Canadian Standards Association), AHRI (Air Conditioning, Heating, and Refrigeration Institute), and IGSHPA technical and advisory committees. He is currently chair for the next edition of the ANSI/CSA/IGSHPA C448 Ground Source Heat Pump Standard.
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Megan Lim
Education and Engagement Consultant
MIT Environmental Solutions Initiative
Megan Lim graduated MIT in 2024, and is now an education and engagement consultant for MIT Environmental Solutions Initiative. She is part of MIT Alumni for Climate Action/Geo@MIT, a alumni-student team that is advocating for MIT to decarbonize by 2035 with thermal energy networks. She is working on student engagement with climate opportunities, and building a coalition of students across the greater Boston area to contribute to climate action on their campuses and in the city.
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Isabel Varela
HEET
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Contains 6 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop Session 4
Contains Presentations:
Pathways to Meet Federal Emissions Targets by Decarbonizing Heating at the National Renewable Energy Laboratory in Golden, Colorado –Saqib Javed & Matt Mitchell, National Renewable Energy Laboratory
Smith College - Phase 1 Geo-Exchange System In Operation – Justin Nash, Bond Building Construction, Inc.; Ian Davies, Salas O’Brien
Ongoing Geothermal System Expansion at an Epic Scale – Jeff Urlaub, Salas O'Brien
Advancing Geothermal & Geo-Exchange Energy Solutions Workshop, Session 4: Geo-Exchange in Action. This session contains the following presentations:
1:20 pm – 1:45 pm
Pathways to Meet Federal Emissions Targets by Decarbonizing Heating at the National Renewable Energy Laboratory in Golden, Colorado –Saqib Javed & Matt Mitchell, National Renewable Energy Laboratory
The National Renewable Energy Laboratory (NREL) is the U.S. Department of Energy's primary national laboratory for renewable energy and energy efficiency research. NREL strives to develop clean energy technologies and practices that advance engineering to integrate energy systems at all scales. However, despite these strivings, the heating for the district hot water system of the main NREL campus in Golden, Colorado is partially provided by a wood fired boiler with the remainder being made up by gas fired boilers. Recently, though, the wood fired boiler is frequently down for repairs. On the electrical side, NREL's high-performance computer is slated to grow from 3-7 MW in the coming years; however, it currently is rejecting all heat to the atmosphere through cooling towers, with no waste heat recovery. The presentation will describe the ongoing investments on converting the existing central plant heating system at the NREL South Table Mountain campus to a 100% electric, geothermal heat pumps system for providing heating and cooling, and how that upgraded central system can integrate into an ambient-loop based system proposed for an upcoming campus expansion.
Keywords: District Energy, Thermal Energy Network, Geothermal Heat Pump
1:45 pm – 2:10 pm
Smith College - Phase 1 Geo-Exchange System In Operation – Justin Nash, Bond Building Construction, Inc.; Ian Davies, Salas O’Brien
2:10 pm – 2:35 pm
Ongoing Geothermal System Expansion at an Epic Scale – Jeff Urlaub, Salas O'Brien
Fifteen years ago, Epic Systems Corporation envisioned replicating the operational cost savings and carbon emission reductions of its first ground-source heat exchange system at a rate aligned with the company's projected market growth. Today, Epic employs over 13,000 people across 8 million square feet on its 1,700-acre campus. Epic's 6,200 bores, 5.8 acre closed-loop pond, and 18,000 GPM open loop pond, add up to one of the largest such systems in the US - with additional expansion imminent. This session examines Epic's successful system growth in an approach that anticipates and leverages the traits and challenges inherent in a geo-source system of this magnitude - with right-sized additions designed to optimize yet further growth.
Keywords: Large-scale geothermal, ground loop/pond coils/open loop system, interconnected ambient loops
Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.
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Mitch DeWein, CEM (Moderator)
Vice President, Business Practice Leader - Generation & Energy Management
CHA Consulting, Inc
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Saqib Javed, PhD
Senior Research Engineer
National Renewable Energy Laboratory
Dr. Saqib Javed is a senior researcher at National Renewable Energy Laboratory (NREL), Colorado, USA. He also serves as an Editor at the ASHRAE’s official journal, Science and Technology for the Built Environment (STBE). He regularly works as an Expert for the European Research and Innovation Programmes. His main research interests are directed toward low-carbon technologies and thermal and building energy systems including building integrated energy systems; heating, ventilation, air-conditioning, and refrigeration; renewable and geothermal energy; district energy and heat pumps; and energy supply and storage systems. He has worked extensively with the design, performance evaluation, techno-economic assessment, and lifecycle analysis of these technologies. He has obtained over 15 million Dollars in research funding and in-kind contributions. He is a certified teacher and has a Diploma of Higher Education in teaching and supervision at the university level. He has supervised 6 PhD and more than 25 post-graduate students. He has made over 90 scholarly publications, including over 50 peer-reviewed journal papers. He has acted as the organizing and scientific committee member for several international conferences and symposiums. He has delivered keynote and invited speeches at research gatherings and conferences across the world. He is a reviewer for over 25 scientific journals.
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Matt Mitchell, PhD
Research Engineer
National Renewable Energy Laboratory
Matt Mitchell, PhD. Research Engineer. National Renewable Energy Laboratory, Golden, Colorado. Matt leads several teams of researchers focused on development of design and simulation tools for geothermal heat pumps and thermal energy networks.
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Justin Nash
Senior Project Manager
Bond Building Construction, Inc.
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Ian Davies, PE
Senior Mechanical Engineer
Salas O'Brien
Ian Davies, PE, is a Mechanical Engineer specializing in high-efficiency, carbon-free energy systems ranging in size and complexity from individual buildings to community-scale campuses. His planning, design, and implementation experience at the district energy level includes geothermal systems for Amherst College, Dartmouth College, Oberlin College, Princeton University, Smith College, Tufts University, Wellesley College, and Worcester Polytechnic Institute.
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Jeff Urlaub
Principal
Salas O'Brien
For over 25 years, Jeff Urlaub, PE, has been a leader in the geothermal energy field, advancing the use of geo-exchange technologies as long-term, cost-effective, carbon-free heating and cooling solutions. Over the past decade alone, Jeff has led the energy analysis, planning, design, and implementation of more than 450 geo-exchange projects, providing over 90,000 tons of system capacity and producing a portfolio of industry benchmarks in scale, performance, and technological innovation. He is responsible for some of the most sophisticated and complex geothermal systems in North America, including the largest U.S. district geo-exchange network, for the campus of Epic Systems Corporation, in Verona, Wisconsin.
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Contains 4 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop, Session 5
Contains presentations: Oberlin College - Achieving Carbon Neutrality through Geothermal – Michael Ahern, Ever-Green Energy
This session contains the following presentation: Oberlin College - Achieving Carbon Neutrality through Geothermal – Michael Ahern, Ever-Green Energy
Oberlin College has achieved its goal of carbon neutrality by 2025. Combined with carbon-free electricity from on-site solar and the local electricity provider, this program integrated geothermal with new hot water and chilled water systems, along with renovation of campus buildings and infrastructure. Michael Ahern (Ever-Green Energy) will share successes and lessons learned through four years of implementation, commissioning, and now operation.
Case Studies: Oberlin College
Keywords: Geothermal, Carbon Neutrality
Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.
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Contains 3 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop, Session 1 Contains Panel: Geothermal Leadership in Massachusetts
Advancing Geothermal & Geo-Exchange Energy Solutions Workshop, Session 1: Geothermal Leadership in Massachusetts: An Inside Look
Panelists Include:
Nikki Bruno, Vice-President, Clean Technologies, Eversource
David DeSwert, Executive Vice President for Finance and Administration, Smith College
Dano Weisbord – Chief Sustainability Officer, Tufts UniversityNikki Bruno
Eversource
Katherine Antos (Moderator)
Undersecretary for Energy & Environmental Affairs
Office of Energy Transition
David DeSwert
Dano Weisbord
Chief Sustainability Officer/ ED Campus Planning
Tufts University
Dano Weisbord joined Tufts in 2022 and serves as Chief Sustainability Officer and Executive Director of Campus Planning. This joint role is intended to further Tufts’ commitment to be a higher education leader in sustainability and climate.
Dano came to Tufts from Smith College where he was Associate Vice President for Campus Planning and Sustainability. Dano was responsible for projects at Smith including the electrification and decarbonization of a thermal and electric district energy system and a Landscape Master Plan. Earlier in his career, Dano worked for CLF Ventures, the former consulting arm of the Conservation Law Foundation. In that capacity he worked on projects around Boston in energy and real-estate sectors. Dano spent four years aboard working for ActionAid International and served as a director of the Global Association of Corporate Sustainability Officers in London.
Dano has a Master of Arts in Urban and Environmental Policy and Planning from Tufts and a Bachelor of Fine Arts in Industrial Design from Rhode Island School of Design. -
Contains 6 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop Session 2
This session consisted of a 3 segment presentation on the Princeton University TIGER Geo-Exchange Project. Princeton University, Burns & McDonnell, and Whiting-Turner will share the story of design, construction, and first year operating data on Princeton University's new geo-exchange utility resource. TIGER consists of nearly 600 geo-exchange bores, each 850 ft deep, and two 2.25 million gallon TES Tanks, connecting to a system supplying 3,400 tons of heating & cooling to campus. This is the beginning of the conversion that the University is tackling as part of their goal of carbon neutrality. Segments include "how we got here"/construction, commissioning & flushing, and "state of the TIGER" - a showcase of >1 year of active operating data.
Case Studies: Princeton University
Keywords: geo-exchange, thermal energy storage, university
9:00 am – 9:30 am
How We Got Here: Construction & TES – Brooke Lautt, Megan Mikrut, & Michael Brault, Whiting-Turner
9:30 am – 10:00 am
System Commissioning & Flushing –Justin Grissom, Burns & McDonnell; Chris Pauzer, Whiting-Turner
10:00 am – 10:35 am
Princeton University State of TIGER – Ted Borer, Princeton University; Ralph Merritt, Whiting Turner
Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.
Brooke Lautt
Project Manager
The Whiting-Turner Contracting Company
Brooke Lautt is a Project Manager at The Whiting-Turner Contracting Company. She received her BS in Civil Engineering from Lehigh University in 2019, and started working at Whiting-Turner immediately following graduation. She worked on the Princeton University TIGER project for the beginning of her career, focusing on the geo-exchange installation, and is currently working on an engineering & science project for the same client.
Megan Mikrut
Project Manager
The Whiting-Turner Contracting Company
Megan Mikrut is a Project Manager with The Whiting-Turner Contracting Company, specializing in renewable energy. She has an engineering degree in Civil Engineering from the University of Delaware.
Michael Brault
Project Manager
Whiting-Turner
Justin Grissom, PE, CEM
Department Manager
Burns & McDonnell
Justin currently serves as a Senior Mechanical Engineer and Department Manager in Burns & McDonnell’s OnSite Energy and Power Group. To this role, he brings diversified experience in the management and design of large decarbonization/electrification and district energy and power projects. His technical expertise lies in central cooling plant design, utility and energy planning, energy system modeling, sustainability, and energy conservation.
Chris Pauzer
MEP Project Manager
Whiting-Turner
Chris Pauzer is an MEP Project Manager for the Whiting-Turner Contracting Company. He has been involved with Mission Critical projects in the mid-west, and was most recently the MEP Project Manager for the Princeton University TIGER project, overseeing commissioning, flushing, and MEP installation. Chris is a graduate from Elizabethtown University.
Ted Borer
Energy Plant Director
Princeton University
Ralph Merritt
Senior M/E Manager
Whiting-Turner
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Contains 6 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop Session 3 Contains presentations: The Importance of Training in the Growth of the Geothermal Heat Pump Industry – Jeff Hammond, International Ground Source Heat Pump Association; Alternative Thermal Energy Networks for Campus Decarbonization – Mitch DeWein, CHA Consulting, Inc; Exploring Thermal Energy Networks for Campus Decarbonization in the US – Megan Lim, MIT Alumni for Climate Action; Isabel Varela, HEET
Advancing Geothermal & Geo-Exchange Energy Solutions Workshop, Session 3: Early Stage Considerations. This session contains the following presentations:
11:05 am – 11:30 am
The Importance of Training in the Growth of the Geothermal Heat Pump Industry – Jeff Hammond, International Ground Source Heat Pump Association
As the world moves towards decarbonization, technologies like geothermal heat pumps are becoming more popular due to the lower peak demand requirements, and less impact on the electric grid compared to other technologies. However, as the technology is more widely accepted as a solution, it is crucial that engineers understand the design of the ground heat exchanger. Mechanical engineers typically have a good understanding of HVAC design and thermodynamics, but generally do not have experience or education related to ground heat exchanger design. Available training to help bridge this gap will be discussed in this presentation.
Keywords: geothermal heat pump training, ground source heat pump training, geothermal heat pump, GHP, ground source heat pump, GSHP, ground heat exchanger, GHX, GHEX
11:30 am – 11:55 am
Alternative Thermal Energy Networks for Campus Decarbonization – Mitch DeWein, CHA Consulting, Inc
Thermal Energy Networks have advanced over the last several years to being the preferred District Energy application on campuses. These systems bring a level of flexibility that has not been matched in prior systems, leveraging a wide variety of thermal energy resources like ground heat exchange, sewer or effluent water, surface water and other forms of heat recovery through a common loop. This presentation will outline an approach to developing these systems, considering the potential barriers to development and implementation as well as many available resources which can be leveraged to eliminate or mitigate those barriers. The presentation will incorporate case studies of Massachusetts-based campus thermal energy networks as examples.
Keywords: Thermal Energy Network, Geothermal, Sustainability
11:55 am – 12:20 pm
Exploring Thermal Energy Networks for Campus Decarbonization in the US – Megan Lim, MIT Alumni for Climate Action; Isabel Varela, HEET
While thermal energy networks are being installed on campuses and in communities around the world to improve energy efficiency and minimize emissions, many more can be adopting it. Our presentation focuses on what thermal energy networks are and how university campuses in particular could leverage them to reach their decarbonization goals, potentially making a "thermal transition leapfrog." We will share campus case studies of 1-pipe and 2-pipe systems, including Colorado Mesa, MIT, and Weber State. We will also share why campuses are the perfect anchor tenants for thermal energy networks!Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.
Mitch DeWein, CEM (Moderator)
Vice President, Business Practice Leader - Generation & Energy Management
CHA Consulting, Inc
Jeff Hammond
Executive Director
International Ground Source Heat Pump Association
Jeff Hammond is Executive Director at the International Ground Source Heat Pump Association (IGSHPA), a non-profit, member-driven organization established in 1987 to advance ground source heat pump (GSHP) technology on local, state/provincial, national, and international levels. Jeff earned a B.S. in business administration from the University of Saint Francis in Fort Wayne, Indiana, and an A.A.S. in electrical engineering technology from Purdue University. He joined IGSHPA with 35 years’ experience in the ground source heat pump (geothermal) industry, including positions at ClimateMaster, Enertech, Geo-Flo, and WaterFurnace. Jeff is a member of ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers), AEE (Association of Energy Engineers), ASAE (American Society of Association Executives), and has served on CSA (Canadian Standards Association), AHRI (Air Conditioning, Heating, and Refrigeration Institute), and IGSHPA technical and advisory committees. He is currently chair for the next edition of the ANSI/CSA/IGSHPA C448 Ground Source Heat Pump Standard.
Megan Lim
Education and Engagement Consultant
MIT Environmental Solutions Initiative
Megan Lim graduated MIT in 2024, and is now an education and engagement consultant for MIT Environmental Solutions Initiative. She is part of MIT Alumni for Climate Action/Geo@MIT, a alumni-student team that is advocating for MIT to decarbonize by 2035 with thermal energy networks. She is working on student engagement with climate opportunities, and building a coalition of students across the greater Boston area to contribute to climate action on their campuses and in the city.
Isabel Varela
HEET
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Contains 6 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop Session 4 Contains Presentations: Pathways to Meet Federal Emissions Targets by Decarbonizing Heating at the National Renewable Energy Laboratory in Golden, Colorado –Saqib Javed & Matt Mitchell, National Renewable Energy Laboratory Smith College - Phase 1 Geo-Exchange System In Operation – Justin Nash, Bond Building Construction, Inc.; Ian Davies, Salas O’Brien Ongoing Geothermal System Expansion at an Epic Scale – Jeff Urlaub, Salas O'Brien
Advancing Geothermal & Geo-Exchange Energy Solutions Workshop, Session 4: Geo-Exchange in Action. This session contains the following presentations:
1:20 pm – 1:45 pm
Pathways to Meet Federal Emissions Targets by Decarbonizing Heating at the National Renewable Energy Laboratory in Golden, Colorado –Saqib Javed & Matt Mitchell, National Renewable Energy Laboratory
The National Renewable Energy Laboratory (NREL) is the U.S. Department of Energy's primary national laboratory for renewable energy and energy efficiency research. NREL strives to develop clean energy technologies and practices that advance engineering to integrate energy systems at all scales. However, despite these strivings, the heating for the district hot water system of the main NREL campus in Golden, Colorado is partially provided by a wood fired boiler with the remainder being made up by gas fired boilers. Recently, though, the wood fired boiler is frequently down for repairs. On the electrical side, NREL's high-performance computer is slated to grow from 3-7 MW in the coming years; however, it currently is rejecting all heat to the atmosphere through cooling towers, with no waste heat recovery. The presentation will describe the ongoing investments on converting the existing central plant heating system at the NREL South Table Mountain campus to a 100% electric, geothermal heat pumps system for providing heating and cooling, and how that upgraded central system can integrate into an ambient-loop based system proposed for an upcoming campus expansion.
Keywords: District Energy, Thermal Energy Network, Geothermal Heat Pump
1:45 pm – 2:10 pm
Smith College - Phase 1 Geo-Exchange System In Operation – Justin Nash, Bond Building Construction, Inc.; Ian Davies, Salas O’Brien
2:10 pm – 2:35 pm
Ongoing Geothermal System Expansion at an Epic Scale – Jeff Urlaub, Salas O'Brien
Fifteen years ago, Epic Systems Corporation envisioned replicating the operational cost savings and carbon emission reductions of its first ground-source heat exchange system at a rate aligned with the company's projected market growth. Today, Epic employs over 13,000 people across 8 million square feet on its 1,700-acre campus. Epic's 6,200 bores, 5.8 acre closed-loop pond, and 18,000 GPM open loop pond, add up to one of the largest such systems in the US - with additional expansion imminent. This session examines Epic's successful system growth in an approach that anticipates and leverages the traits and challenges inherent in a geo-source system of this magnitude - with right-sized additions designed to optimize yet further growth.Keywords: Large-scale geothermal, ground loop/pond coils/open loop system, interconnected ambient loops
Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.
Mitch DeWein, CEM (Moderator)
Vice President, Business Practice Leader - Generation & Energy Management
CHA Consulting, Inc
Saqib Javed, PhD
Senior Research Engineer
National Renewable Energy Laboratory
Dr. Saqib Javed is a senior researcher at National Renewable Energy Laboratory (NREL), Colorado, USA. He also serves as an Editor at the ASHRAE’s official journal, Science and Technology for the Built Environment (STBE). He regularly works as an Expert for the European Research and Innovation Programmes. His main research interests are directed toward low-carbon technologies and thermal and building energy systems including building integrated energy systems; heating, ventilation, air-conditioning, and refrigeration; renewable and geothermal energy; district energy and heat pumps; and energy supply and storage systems. He has worked extensively with the design, performance evaluation, techno-economic assessment, and lifecycle analysis of these technologies. He has obtained over 15 million Dollars in research funding and in-kind contributions. He is a certified teacher and has a Diploma of Higher Education in teaching and supervision at the university level. He has supervised 6 PhD and more than 25 post-graduate students. He has made over 90 scholarly publications, including over 50 peer-reviewed journal papers. He has acted as the organizing and scientific committee member for several international conferences and symposiums. He has delivered keynote and invited speeches at research gatherings and conferences across the world. He is a reviewer for over 25 scientific journals.
Matt Mitchell, PhD
Research Engineer
National Renewable Energy Laboratory
Matt Mitchell, PhD. Research Engineer. National Renewable Energy Laboratory, Golden, Colorado. Matt leads several teams of researchers focused on development of design and simulation tools for geothermal heat pumps and thermal energy networks.
Justin Nash
Senior Project Manager
Bond Building Construction, Inc.
Ian Davies, PE
Senior Mechanical Engineer
Salas O'Brien
Ian Davies, PE, is a Mechanical Engineer specializing in high-efficiency, carbon-free energy systems ranging in size and complexity from individual buildings to community-scale campuses. His planning, design, and implementation experience at the district energy level includes geothermal systems for Amherst College, Dartmouth College, Oberlin College, Princeton University, Smith College, Tufts University, Wellesley College, and Worcester Polytechnic Institute.
Jeff Urlaub
Principal
Salas O'Brien
For over 25 years, Jeff Urlaub, PE, has been a leader in the geothermal energy field, advancing the use of geo-exchange technologies as long-term, cost-effective, carbon-free heating and cooling solutions. Over the past decade alone, Jeff has led the energy analysis, planning, design, and implementation of more than 450 geo-exchange projects, providing over 90,000 tons of system capacity and producing a portfolio of industry benchmarks in scale, performance, and technological innovation. He is responsible for some of the most sophisticated and complex geothermal systems in North America, including the largest U.S. district geo-exchange network, for the campus of Epic Systems Corporation, in Verona, Wisconsin.
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Contains 4 Component(s), Includes Credits
2025 Campus Energy Geothermal Workshop, Session 5 Contains presentations: Oberlin College - Achieving Carbon Neutrality through Geothermal – Michael Ahern, Ever-Green Energy
This session contains the following presentation: Oberlin College - Achieving Carbon Neutrality through Geothermal – Michael Ahern, Ever-Green Energy
Oberlin College has achieved its goal of carbon neutrality by 2025. Combined with carbon-free electricity from on-site solar and the local electricity provider, this program integrated geothermal with new hot water and chilled water systems, along with renovation of campus buildings and infrastructure. Michael Ahern (Ever-Green Energy) will share successes and lessons learned through four years of implementation, commissioning, and now operation.
Case Studies: Oberlin College
Keywords: Geothermal, Carbon Neutrality
Michael Ahern (Moderator)
SVP, System Development
Ever-Green Energy, Inc.
Michael Ahern has over 30 years of experience in leading development, engineering, construction, operation, and management of industrial and energy systems. This includes operational oversight of businesses in the industrial and energy fields, with a specific focus on district systems over the last fifteen years. At Ever-Green, he leads the development and advancement of mission-based campus and community energy and utility systems that achieve clients’ strategic goals. Ahern holds a BS in Business Finance from the University of Notre Dame, with an International Business Minor.