* Speakers list is subject to change (latest update: 12 April 2019)

Ammi Amarnath

Senior Technical Executive in the Energy Utilization Research Area, Electric Power Research Institute EPRI

He leads a team of engineers and scientists in the research, development, deployment and market transformation of Energy Efficiency & Demand Responsive (EE/DR) technologies. Some of the technologies demonstrated include: advanced space conditioning systems for residential and commercial buildings, heat pump water heaters, advanced end-use smart technologies that integrate with the smart grid, and industrial process efficiency improvements. He also manages RD&D activities focused on advanced demand response (DR) applications in Energy-Water Nexus area & renewables integration, and technologies such as OpenADR and SEP. His focus also includes utility analytical techniques, such as energy meter data disaggregation, impact of energy efficiency on emissions etc, so as to make energy efficiency and demand response programs successful around the world.
In his prior tenure at EPRI, Amarnath was a Senior Project Manager within the Industrial and Distributed Generation programs. His activities included the collaborative RD&D of efficient industrial technologies, advanced fuel cells and other distributed generation technologies.
Amarnath received a Bachelor of Engineering degree in chemical engineering from India and a Master of Science degree in chemical engineering from the University of California, Santa Barbara. He also holds a Master of Business Administration degree from the University of Houston.

Rob Arthur

Principal, CTA Architects Engineers

Co-director of CTA’s retail design team and principal-in-charge of refrigeration engineering, Rob Arthur has dedicated his career to high-efficiency, low-emission refrigeration solutions for retail and grocery spaces. With a personal and professional goal of helping the grocery industry transition to more technologically advanced, sustainable refrigeration systems, Rob works to provide high-quality designs for facilities across the United States and internationally. He and his team design responsible, long-term systems. 

Rob is a licensed professional engineering 28 U.S. states, British Columbia, Alberta, Ontario, Saskatchewan, and Puerto Rico and a LEED-accredited professional. When he’s not engineering cutting-edge refrigeration solutions, Rob can be found coaching youth sports in his home state of Montana.

Marc Chasserot

CEO, shecco

Marc Chasserot is a specialist in natural refrigeration with over 15 years of experience in the HVAC&R sector, starting as the Marketing Manager for the Norsk Hydro business unit specialised in CO2 transcritical refrigeration and heating. He worked closely with several Japanese manufacturers selling the market innovative "CO2 Ecocute heatpumps".

In 2006 Marc founded the industry leading website for CO2 cooling and heating experts worldwide, called This was followed by three additional industry resources for hydrocarbons, water and ammonia (namely:, and

Marc is co-founder and Managing Director of shecco sprl (Belgium), an independent market development company specialised in bringing Natural Refrigerants 'faster to market', working with numerous companies worldwide. Marc has chaired and organised several international workshops bringing together leading policy and industry experts to discuss 'how to bring natural refrigerants' faster to market, known as 'ATMOsphere'. He is also an active member of ASHRAE.

Gary Cooper

Director of Refrigeration, Lowe's Market

Gary has been involved in grocery store refrigeration for 29 years, the last 22 have been with Lowe’s.
His responsibilities include oversight of all service both refrigeration and HVAC for 153 sites with his 27 employee dept., also design, build, install and commission of custom designed rack systems in house.

Paul Delaney

Senior Engineer, Southern California Edison

Paul Delaney has been an energy and energy efficiency professional for 38 years, and is currently a Senior Engineer at Southern California Edison. He is responsible for the evaluation of new technologies that can reduce demand and energy consumption for Edison industrial, large commercial, manufacturing and agriculture customers. Paul is an experienced speaker, panelist and recognized utility expert in natural and alternative refrigerants for refrigeration applications. Mr. Delaney was a former Vice President for the American Utility Network, National Account manager for Edison Source and Senior Energy engineer for the United States Navy. Mr. Delaney holds a BS in Environmental Engineering from Cal Poly, San Luis Obispo, CA, and is a member of ASHRAE, ASME and SME.

Glenn Gallagher

Air Pollution Specialist, California Air Resources Board

Glenn Gallagher is an Air Pollution Specialist at the California Air Resources Board (ARB), where he works on the Refrigerant Management Program and develops F-gas emissions mitigation measures. Prior to joining ARB, Glenn worked in the household hazardous waste recycling program at Cal-EPA, and before beginning public service in 2001, worked many years as an environmental consultant, developing Superfund site cleanup plans and ozone depleting substance management programs.

John Gallaher

Business Development Manager for Commercial Applications, Güntner US

John Gallaher is the Business Development Manager for Commercial Applications for Güntner US, a world leader in heat exchanger technology. He joined Güntner US in June of 2018 after spending over 25 years in a variety of positions including engineering, refrigeration systems R&D, and sales leadership in the refrigeration compressor systems industry for major North America OEM’s.  During his time in the refrigeration industry, John has been involved in the development and introduction of various CO2 technologies for commercial applications and expanding the use of these technologies to the refrigerated processing and storage industry. John is a member of technical committees at IIAR, the Global Cold Chain Alliance, and ASHRAE.

Ricardo García

Project Director, Frialsa

Ricardo García is an industrial engineer with 25 years experience in the industrial and commercial refrigeration. He has done several industrial refrigeration courses at Lanier Technical College (GA), York (PA) and the University of Oklahoma. Ricardo has worked for 25 years at Frialsa and he is currently the project director. He has been involved in the design and construction of more than 25 distribution centers in Mexico and one in Peru (10 of those are NH3/ CO2 systems).

Michael Garry

Editor, shecco

Michael Garry is a business journalist with a 30-year track record. Most recently, he ledthe coverage of sustainability, technology and logistics at Supermarket News for more than 11 years. He is well known among retailers, suppliers, technology vendors and trade groups throughout the North American food retailing and consumer goods industries. A Phi Beta Kappa graduate of M.I.T. with a degree in political science, he has written his first book, “Game of My Life – New York Mets,” in which 25 baseball players recall their most memorable game.

Vicente Guilabert

R&D and Technology Director, Huayi Compressor Barcelona, S.L

Vicente Guilabert is currently the Vice General Manager leading R&D and Quality at Huayi Compressor Barcelona, S.L. He has an Industrial Engineer degree from the “Universidad Politecnica de Catalunya” and a PDD from the IESE Business School. He has made an extensive professional career within the HVAC&R sector. Mr. Guilabert is currently the head of the R&D team at Huayi Compressor Group for light commercial refrigeration compressors. He has an outstanding knowledge of the hermetic compressor technologies, combined with great expertise in light commercial refrigeration market trends. He has also participated as a speaker in international conferences.

Before joining Huayi Compressor Barcelona 15 years ago, he worked for Hitachi Air Conditioning for 5 years as the Technical Customer Service Centre Manager. His responsibilities were linked to the technical assistance of customers worldwide.

Harrison Horning

Director of Maintenance – Hannaford, Retail Business Services, LLC

Harrison Horning is Director of Maintenance for Retail Business Services, LLC, a subsidiary of Ahold Delhaize.  His role is focused on supporting Hannaford Supermarkets, with 181 stores in five northeastern US states.  His current work includes collaborative efforts to address sustainability and climate impacts.  He has over 25 years of experience in the field of facilities and energy management, encompassing a wide range of commercial, industrial and institutional facilities. 

Pega Hrnjak

Res. Professor, Dept. of Mechanical Science and Engineering & President, CTS Inc., University of Illinois

Professor Hrnjak is Co-Director of the Air Conditioning and Refrigeration Center (ACRC) at the University of Illinois at Urbana Champaign, an NSF founded university–industry cooperative research center. Pega is also a founder and President of R&D company CTS, which bridges ACRC activities (precompetitive research in function of education) and industry. He is an active member or fellow of ASME, ASHRAE, IIR, SAE and IIAR, and an editor or member of the boards of several professional scientific journals. He is a recipient of Gustav Lorentzen, J&E Hall and Rittinger medals among other awards.

Peter Lepschat

Corporate Manager of Engineering Services, Henningsen Cold Storage Co.

A native of Oregon, Peter Lepschat has been involved with ammonia refrigeration for over 25 years. He currently serves as Corporate Manager of Engineering Services at Henningsen Cold Storage Co., where he is involved in the design and construction of new facilities as well as continuous improvement at the twelve existing HCS locations. Peter serves on the National Board of directors for RETA, and has written and presented white papers and articles for both RETA and the IIAR.

Kurt Liebendorfer

Vice President, Evapco

Kurt is Vice President of Evapco and is located at its corporate headquarters in Taneytown, MD. He is leading the development and market introduction of the new EvapCold family of products, which are complete Packaged Low Charge Ammonia Refrigeration Systems.

Kurt has been in the industrial refrigeration, process cooling and construction industry for 30 years and has also worked for Johnson Controls/Frick, Stellar and GEA/FES.

Kurt received an Executive MBA from Jacksonville University and a Bachelor of Science - Mechanical Engineering from the University of Pittsburgh.

Kurt has served on the Board of Directors of the International District Energy Association, Past President of the Jacksonville chapter of ASHRAE, Past Chair & President of the Turbine Inlet Cooling Association and is an active member of IIAR, serving on the Government Affairs committee & Compliance Guidelines committee, and the Global Cold Chain Alliance serving on the Refrigeration & Energy committee and the Construction Codes committee.

Brandon Marshall

Application Specialist - Refrigeration, CAREL

Brandon Marshall is a refrigeration expert with over 10 years of experience dealing with a multitude of refrigeration applications. His current responsibilities include implementation of CAREL’s energy saving products in the refrigeration food service and retail industry. Recently Brandon has focused on assisting manufactures in successfully incorporating natural refrigerants into their product lines.

Scott Martin

Director, Business Development and Industry Relations, Hillphoenix

Scott Martin currently serves as Director, Business Development and Industry Relations for Hillphoenix, a Dover Company, located in Conyers, Georgia.  A third generation Refrigeration Engineer, Scott received his Bachelor of Science in Mechanical Engineering from Southern Polytechnic State University in 1985.  Scott has held a wide variety of industry roles including Product Manager, Director of R&D, Engineering, and most recently Director of Sustainable Technologies.  Today, Scott’s focus reflects a strong Hillphoenix commitment to providing product and technology answers that help retailers supply higher quality food products while advancing efforts toward environmental stewardship.

Lydia Matthäus-Wiltink

Global Events Manager, shecco

Lydia has a strong background in hospitality management, including events planning, sales, customer service and reception. Having had an active interest in sustainable business already for several years, Lydia joined shecco in 2016 to strengthen the expansion of the ATMOsphere community globally. With the globally growing demand in natural technology solutions, Lydia is responsible for shecco’s event management around the world, including all ATMOsphere conferences and events.

Jürgen Süß

CEO, Efficient Energy

Jürgen joined Efficient Energy in December 2013 and is currently the CEO of the company. From early 2011, he served as Managing Director and CEO at Cofely Refrigeration in Lindau, Germany. This company is part of the GDF Suez Group and manufactures products and solutions for the industrial refrigeration segment. Previously, Jürgen had a 13-year assignment at Danfoss A/S in Denmark, where his last role was Vice President R&D of controls and line components for all kinds of refrigeration equipment. Before this, he held various management positions within technology and business development at Danfoss. Jürgen has a Ph.D. in Refrigeration from Hannover University and is active in the IIR, ASHRAE, and other scientific committees and associations.

Eric Smith

Vice President and Technical Director, International Institute of Ammonia Refrigeration (IIAR)

Eric Smith is the Vice President and the Technical Director for IIAR.  He manages the development of IIAR standards, research projects, safety and compliance publications, and technical program development.  He is also involved with advocacy, outreach, education, and member services.  Eric was a refrigeration designer for 18 years, and was a service technician for several years prior to that.  Eric is a registered professional engineer in over 30 states and holds a bachelor’s degree in mechanical engineering.

Lois Stirewalt

Natural refrigeration advocate and workforce development program director, RETA and GCCA

Lois Stirewalt is a nationally recognized natural refrigeration and cold chain advocate and workforce development program creator for both RETA (Refrigerating Engineers and Technicians Association) and GCCA (The Global Cold Chain Alliance). As the former Executive Director of the Ammonia Refrigeration Foundation (ARF) she fell in love with this exciting and ever changing industry. While there, she formed an industry trade alliance to establish a nationally approved Department of Labor Apprenticeship for the occupation of ammonia refrigeration operator and technician, and continues to foster and encourage the industry to embrace this opportunity.  

She also created the #REDWHITEANDCOOL initiatives and is carrying this program forward with their blessing. Recently forming a partnership with the Department of Defense, the concept of this program is to recruit, train, and hire transitioning military personnel/veterans/families into the amazing world of natural refrigeration. Stirewalt is also one of the original members of WiNR (Women in Natural Refrigeration). She has a Master's in Public Administration from The George Washington University and her undergraduate degree from Lenoir-Rhyne University in North Carolina. She resides in Alexandria, Va.

John Stuit

Chief of Design and Construction, Defense Commissary Agency

John Stuit has 33 years of experience as an engineer in the supermarket industry. He is currently chief of design and construction at the Defense Commissary Agency which operates a chain of 240 supermarkets on military bases worldwide. Mr. Stuit has enjoyed working with manufactures to place very low GWP refrigeration solutions into place including several transcritical CO2 systems in a variety of climates in the United States and an ammonia/CO2 cascade system. Mr. Stuit has a degree in mechanical engineering from Dordt College.

Ryan Welty

VP of Sales & Operations, South-Town Refrigeration & Mechanical

Ryan Welty is the VP of Sales & Operations for South-Town Refrigeration & Mechanical. He started 8 years ago as a full-time warehouse support person and has gradually made his way up through the company to his current role. Today, he oversees all operations and sales. Ryan enjoys using his creativity to solve problems with customers.

Ali White

VEIC Energy Consultant, Efficiency Vermont

Ali White is a VEIC Energy Consultant for Efficiency Vermont's commercial and industrial customers. Through that energy efficiency utility, she develops innovative energy-saving solutions tailored to their business models and strategies. She conducts technical and financial analyses to confirm the value of these solutions. Ali specializes in refrigeration energy efficiency measures and system design for grocery stores, breweries, and industrial processes. She holds a B.S. in Engineering from the University of Vermont.

Marek Zgliczynski

Director, Fellow Researcher of R&D , Embraco

Marek Zgliczynski studied at the Turin Politechnic in Italy where he earned his degree in mechanical engineering. In 1979, after completing his degree, Marek began his career as a researcher and project leader of new product development at Aspera Spa. 

A few years later, Marek transitioned to Embraco, becoming the Manager of Compressor Design. His successful efforts led to many promotions, including European Commercial Product and Technology Manager, Commercial Refrigeration Product Corporate Director and Corporate Fellow Researcher for the Commercial Refrigeration Segment. 

His main responsibility includes the development of household and light commercial refrigeration products. He also provides technical assistance to the sales team in order to promote Embraco products that align with customer feedback. 

Throughout his career, Marek has earned three U.S. patents and Gold Whirlpool Quality Team Award and he has published several pieces of literature for international conferences and events about refrigeration technology. In 2016, he was elected to a Chair of the IEC/SC61C Committee, in charge of the development of international product safety standards for refrigeration segment. He is also member in several other standardization bodies like ISO TC86/SC1/WG1, CEN TC182WG6 and WG12, IEC SC61DWG16 and UL STP471, Ashrae Member. 

Klara Zolcer Skacanova

Market Development Manager, shecco

With a background in public affairs and economics Klára joined shecco in 2011. She leads the company’s market development team focusing on market research, policy analysis, funding projects and specialised campaigns with the objective of accelerating the adoption of climate friendly technologies across different world regions. She has co-authored several extensive market and policy publications focusing on the current use and future potential of natural refrigerants. Prior to joining shecco she worked at the European Commission and a European association for small and medium-sized businesses.