GO SUSTAINABLE - Key Persons


Abdul Qayyum Mohammed

Q leads Go's hospital energy management team, which advises our portfolio health care clients in the pursuit of energy and cost savings. Q has aided health care systems' prioritization, identification, and execution of energy efficiency opportunities. Furthermore, he has assisted in setting goals and targets to help health care facilities track progress towards overall reduction of energy use. Ongoing engagement with health care utility systems allows our team to be significantly more effective and improves the cost of health care. Q is also one of Go's most seasoned energy engineers with specialization in refrigeration, chilled water, HVAC, and compressed air systems. He has extensive energy auditing and measurement and verification (M&V) experience, especially for industrial facilities and large commercial systems. His data analysis and simulation skills are critical to our successful interaction with complex energy using systems. Q's understanding of process cooling, industrial refrigeration and compressed air systems has also allowed him to develop multiple custom system and energy simulation tools for our team. Q is passionate about working in the energy efficiency field. He believes that energy efficiency is key to a sustainable future, globally. It is often the first step followed by advanced energy technologies and renewable energy. Q shares this passion and his knowledge by frequently publishing technical papers published to ACEEE, AEE ASHRAE, and other conferences and journals in the field of energy. He has authored or co-authored twelve publications on topics including energy-efficiency in industrial refrigeration and large HVAC systems, motor and v-belt energy efficiency, M&V for industrial systems, etc. Q's love for cars allows him to be our team's resident car mechanic. He also loves driving around the country to visit interesting cities and historic sites. Q is fascinated by nature and how it finds a way to tackle most of the complex issues that exist on the planet. Q also loves working with the latest tech in both his personal and professional life.

Carrie Sexton

Carrie joined Go Sustainable Energy in July of 2019 as our Operations and Human Resources Manager. She holds a BA in Liberal Studies with a Psychology emphasis. She works along-side our Office Manager handling our "non-engineering" functions, thus allowing our engineers to focus their attention more fully on the needs of our clients. Her more than 20 years of Human Resources experience allows Carrie to add breadth to our team. Prior to joining us, Carrie worked in Human Resources at a commercial real estate company, a corporate credit union, and a manufacturer's representative firm. She holds a Professional Human Resources certification from the Human Resources Certification Institute (HRCI). Carrie's greatest joy is enabling others to succeed in their jobs.

Charles Schreier

Charlie is well versed in the needs of investor-owned and municipal utilities. For our municipal utility clients, he has led our program development and on-site project verification for rebate programs, assisted in the study of advanced services such as demand response programs, and has assisted our clients in utility-scale renewable energy deployment. For other utility or portfolio clients, Charlie's data analytics skills enable Go to perform accurate third-party benchmarking, tracking, and measurement and verification (M&V) services.

Chris Sala

Job Titles:
  • Engineer
Chris is an engineer with a wealth of experience in industrial and commercial energy audits, utility measurement & verification, energy modeling, and commissioning. In performing these services for hundreds of facilities, Chris performs facility and system energy end-use breakdowns to provide actionable information on energy related investments and results for our clients. Chris is also a key member of our strategic energy management team, which advises our portfolio health care clients in the pursuit of energy and cost savings. Working with energy intense facilities, systems, and portfolios allows Chris to collaborate with cross functional teams of different technical and non-technical backgrounds. Chris is highly skilled at translating both the more technical initiatives of the facilities team with the more system level energy goals of the core business team. Before joining our team, Chris spent a few years performing energy audits in the manufacturing sector, focusing on compressed air, ammonia refrigeration, HVAC, lighting, process heating, and process cooling for around 50 customers. During this time, he also completed "Compressed Air Challenge" Level 2 training. Chris graduated from University of Dayton with a Bachelor of Mechanical Engineering and a Master of Science in Renewable and Clean Energy. As an undergrad, Chris' passion for sustainability led him to the position of UD's Sustainability Club president, following the example of several other Go employees. His master's thesis covered vehicular emission mitigation pathways for the city of Cochabamba, Bolivia where he worked for 4 months. When energy efficiency is not occupying Chris' time, you can find him hiking or skiing in the mountains, riding or wrenching on his motorcycle, or practicing his Muay Thai kickboxing at the gym with his wife. He also enjoys reading epic fantasies and books on philosophy or social justice to wind down.

Emily Roland

Emily is one of Go's experienced commissioning agents and commercial energy experts. She has a background in engineering design, working with systems such as HVAC, steam, and hot water. At Go, Emily assists project teams on energy audits, utility measurement & verification, portfolio-scale energy management, and portfolio-scale data analysis projects. She is integral to our commissioning and energy management projects, often performing project and client management for our team. She brings a wealth of prior experience working with building owners, architects, construction teams, and other engineers to inform her perspectives. Before joining Go, Emily spent five years performing HVAC systems design for large commercial new construction and major renovation projects for schools, museums, offices, and libraries. Many of these facilities were pursuing or achieved LEED certification. Her design experience involved 3D modeling of HVAC systems, HVAC design calculations, equipment selection, and creating design documents like drawings and specifications. During this time, she was able to design systems such as, but not limited to steam, hot water, various air handling units, variable refrigerant flow (VRF), etc. Emily earned her Bachelor of Mechanical Engineering and Master of Science in Mechanical Engineering from the University of Dayton with a focus in Renewable and Clean Energy. For her master's thesis on tidal electricity generation, she worked with her professors to design a man-made lake and channel connected to the ocean that imitates real locations in the world that see a dramatic change in tide every day. The goal was to create a system that operated near its resonant frequency to maximize tide variation and generate electricity as the tides change using a turbine. One motto from Huxley's novel Brave New World was "the more stitches, the less riches". Emily disagrees with a passion! She strives to sew and knit to both mend and to avoid buying new. Projects include reusable snack and food storage bags and superhero capes for her kids! Emily loves spending time with her husband and three kids going camping and to parks. Past kid bedtime, she enjoys watching science fiction movies and playing strategy board games.

Gregory Raffio

Greg oversees business development and client relations for Go. His energy engineering experience enables him to more effectively work with our current and prospective clients to develop technically and economically feasible solutions to their needs. Greg manages our Strategic Energy Management projects, helping our clients navigate both the technical and non-technical ways of interacting with the complex world of energy and energy efficiency. As a project team member, Greg most regularly assists our clients in understanding the technical and economic feasibility of distributed energy resources such as renewable energy and energy storage. He also has significant experience with commissioning, energy simulation, energy auditing, and portfolio-scale utility data analysis projects. He received his Bachelor of Mechanical Engineering and Master of Science in Mechanical Engineering from the University of Dayton. Greg has authored or co-authored eleven technical papers in the field of Zero Energy Buildings (ZEBs), energy efficiency, and multi-site analysis. Greg continuously educates himself about the ZEB industry. He is driven by his passion for the adoption and normalization of life-cycle cost-effective ZEBs to empower owners to control their interactions with a constantly volatile utility infrastructure. Greg is our team's "barefoot" runner and encourages staff and visitors to take a running or walking break each afternoon. You'd be surprised how many walking meetings we've had! Greg hosts a community-supported agriculture (CSA) drop-off at his home, providing easy access to local produce to about 40 families during the Ohio growing season and beyond. He'll try to recruit you if you ask about it!

John Seryak - CEO

Job Titles:
  • CEO
John is the founder and CEO of Go Sustainable Energy. John has led Go's strategy of attracting best-in-class engineering talent, to provide accurate, unbiased advice on energy-efficiency and sustainable energy, from practical next steps to cutting edge projects. John has built on deep technical energy engineering expertise to become a leader and visionary on practical design considerations for the changing electrical grid, and societal use of energy. John's strengths of understanding and navigating the technical, economic, policy, and market contexts surrounding energy efficiency and sustainable energy attract a clientele of pioneers and leaders. John leads Go's regulatory, policy, and electricity markets team servicing customers and has directed Go's investment in pioneering services of energy management, net-zero energy design, utility program design, and research on customer decision making. John enjoys balancing the systemic solutions Go provides to clients with the seemingly futile exercise of picking up trash in the local woods with his kids. This may stem from the satisfaction of creating a safe place for neighborhood kids to catch toads and darter fish. Or, it may be long simmering feud between John and garbage - John was mercilessly slashed by a broken bottle during Clean Up Barberton Week in 1987, requiring five stitches. He still bears that scar!

Kevin Fisher

As a seasoned energy engineer, Kevin is well-versed in commercial and industrial energy using systems, supporting our energy auditing, commissioning, and portfolio energy management services. Kevin was a project lead and senior reviewer for our work in AES Ohio (formerly DP&L) territory, helping our team perform evaluation, measurement & verification for hundreds of commercial and industrial energy efficiency projects in that territory. Kevin is a core member of our strategic energy management team, which advises our portfolio health care clients in the pursuit of energy and cost savings. Kevin has aided health care systems' prioritization, identification, and execution of energy efficiency opportunities. Furthermore, he has assisted in setting goals in targets to help health care facilities track progress towards overall reduction of energy use. Ongoing engagement with health care utility systems allows our team to be significantly more effective and improves the cost of health care. Kevin's passion for appropriate technology and engineering service work led him to join the University of Dayton's ETHOS program, a program dedicated to engineering immersion service projects around the world. Kevin implemented appropriate technology projects in Guatemala and Nicaragua and spent three summers living in Central America. Since graduating from the University of Dayton with his Bachelor of Mechanical Engineering and Master of Science in Renewable and Clean Energy, Kevin has continued his support of the program. He even helped organize and lead a trip to Nicaragua while working at Go in 2013.

Lianna Nordwig

Job Titles:
  • Engineer
Lianna is an engineer that serves our healthcare clients as part of our embedded energy management teams and contributes to energy audits, measurement & verification, commissioning, and other technical analysis projects. Her ability to analyze and understand utility and related energy data allows our healthcare clients to track progress towards goals, identify and resolve issues, and gain support for energy management activities from leadership. She has also played a key role in an electrification-focused sustainability study for the Central Ohio Transit Authority, performing research and analysis, documenting recommendations, and advising on goal setting.

Matthew Worsham

Matthew is a member of our embedded healthcare energy management team, advising our health care clients in the pursuit of energy, carbon, and cost savings. Before joining Go, Matthew was the Sustainability and Energy Coordinator and then the Energy Efficiency and Renewable Energy Manager for a university in Ohio where he managed more than $900,000 in energy efficiency projects that manifested around $1 million in annual cost savings. Between undergrad and grad school, Matthew was an intern at Go, where he performed evaluation, measurement & verification site visits, analysis, and documentation for our utility efficiency rebate support team. Matthew's experiences provide him with an owner's perspective of the challenges faced in the transition to a low-carbon and clean-energy society and he brings a broad knowledge base to our team. He is formally trained in composting operations and is a certified energy manager (CEM). Matthew has performed sustainability assessments, sustainability reporting, and he has advised and mentored dozens of students and student teams on energy and sustainability topics. He was on the oversight committee for the university's Green Revolving Fund, where he developed projects within campus facilities and worked with other stakeholders to advise on project implementation. Matthew received a Bachelor in Mechanical Engineering and a Master of Science in Renewable and Clean Energy, both from the University of Dayton's School of Engineering. While a student, he was actively involved in the ETHOS program, which is dedicated to engineering immersion service projects around the world, where he performed research on solar thermal adsorption refrigeration. He was also a graduate research assistant in the Hanley Sustainability Institute, enabling him to co-author his graduate and post-graduate research on carbon lock-in and decarbonization pathways for universities. Matthew is active in the Dayton, OH community, and volunteers his time with conservation organizations. He would love to be your tour guide to the Wright Brothers historical parks and the other amazing historical sites in the Dayton area. His love for animals brings him to volunteer with a group dedicated to low-cost veterinary care for cats and dogs in the Dayton area. He also enjoys exploring new cities and hiking through nature. Matthew can frequently be found during the workday in one of Dayton's great local coffee shops!

Micah Bidwell

Job Titles:
  • Energy Engineer
Micah is an energy engineer that works on energy auditing, commissioning, and healthcare energy management projects. Her background is interdisciplinary, having received a Bachelor of Science in Environmental Engineering from Georgia Institute of Technology and a Master of Science in Renewable and Clean Energy from the University of Dayton. Before joining Go, Micah's interest in experiencing new cultures lead her to study abroad in Spain and Ecuador. Her passion for sustainability led her to participate in clean water engineering projects in Ghana and Uganda. She also worked in the City of Dayton's Water Department, protecting and monitoring the Miami River Valley's water resources. Ever since moving to Ohio, Micah has purposefully engaged in communal living in a big house with many good friends! Together, she and her housemates are active members of the St. Anne's Hill Historic Society and were recognized with the Fred P. Bremer Volunteer of the Year award in 2019. She enjoys bike riding, the elimination of invasive species like honeysuckle and tree of heaven, and doing group projects! Micah and her housemates recently purchased some land with big plans to build a haybale house with a food forest for all of their neighbors to enjoy.

Milena Walwer

Job Titles:
  • Member of Go 's Distributed Energy Resources
Milena is a core member of Go's Distributed Energy Resources team, working with renewable energy, demand response, energy storage and grid interactive technologies. Milena has helped government, non-profit, utility, university, and other entities study the technical and economic feasibility for renewable energy and energy storage projects, assisted them with market engagement, and helped them to navigate the complex world of renewable energy procurement for both on-site and off-site opportunities. To do so, Milena analyzes complex data, performs in-depth research and documentation, assists in RFP writing, and helps to effectively communicate our findings.

Mohamed Tatari

Mohamed is Go's Engineer Development Lead, supporting technical skill development amongst our engineers. Among his many duties, Mohamed coordinates staff education and professional certification, mentors staff, and serves as an important additional layer of quality control for our deliverables. Mohamed served as a project lead and senior reviewer for our work in the AES Ohio (formerly DP&L) territory. From 2011-2020, Mohamed was a member of our DP&L evaluation, measurement & verification EM&V team, who jointly provided EM&V for around 1,000 energy efficiency projects in DP&L territory. He continues to support our municipal utility efficiency program work in Westerville Electric Division and Cuyahoga Falls Electric System territories. Mohamed has been critical to hundreds of utility-scale M&V projects, which have measured energy savings on compressed air systems, industrial equipment, chiller plants, pumping systems, HVAC, etc. Mohamed always strives for high quality work and rapidly analyzes and understands complex systems. This extensive experience with M&V and complex systems allows Mohamed to play a critical role in energy auditing, energy simulation, commissioning, and other technical assistance services for our clients. Net-Zero energy is a key area of technical interest for Mohamed. He has worked on multiple net-zero energy studies and has performed energy simulation and commissioning for net-zero new construction projects. Mohamed has also helped to co-author and present about our team's net-zero energy observations and results. Mohamed received his Bachelor of Mechanical Engineering from Aleppo University in Syria. Mohamed received his Master of Science in Mechanical Engineering from California State University, Los Angeles. Mohamed spends his free time playing with his children and teaching them a love for nature and outdoor activities.

Peter Kleinhenz

Peter is Go's Client Projects Lead, ensuring consistency and quality across all our services. He is one of Go's industrial energy specialists with extensive experience in HVAC, compressed air, process cooling, process heating, and production equipment systems. He is also technical lead for commissioning and energy auditing services, having audited or commissioned hundreds of industrial and commercial sites. He is skilled in energy simulation, measurement & verification (M&V), utility data regression, and performing custom tool creation for complex projects. Peter has instructed numerous trainings on energy auditing and M&V techniques. Peter stays active within the energy-efficiency community by presenting at technical conferences and workshops. He has authored or co-authored technical papers on topics such as combined heat and power, metering and verification methodologies, efficiency of compressed air systems, efficiency in critical facilities such as hospitals, using energy data to better size systems, net-zero energy, optimizing sky lighting, and how energy inefficiencies get implemented despite many societal filters that intend to prevent them. Peter received his Bachelor of Mechanical Engineering and Master of Science in Mechanical Engineering from the University of Dayton (UD) and is a Professional Engineer. At UD, Peter worked in the UD Industrial Assessment Center as a graduate assistant and lead student. As a member of the UD ETHOS center, Peter also spent several summers abroad involved with engineering projects in Bolivia and Brazil. For fun, Peter enjoys being outdoors and spending time with his wife and kids. Peter is a Board of Director member for Green Energy Ohio, an Ohio not-for-profit dedicated to promoting renewable and clean energy. He also enjoys coaching his kids' youth sports, bicycling, and running.

Ryan Schuessler

Job Titles:
  • Member of Our Company
Ryan is one of Go's industrial energy experts and a critical part of our team when analyzing industrial energy using systems during energy audits, commissioning, and measurement & verification (M&V) projects. Ryan performs bulk data analysis and processing so that Go may perform services such as impact modeling of policy and regulatory issues and distributed energy resource adoption for individual customer facility accounts. He is also an expert in electricity transmission contracts and rate structures, helping our clients navigate the nuances of how they are charged for energy as they make investment decisions. Ryan's technical, investigatory, and communication skills are integral to our work with the Ohio Manufacturers' Association. As Go's regulatory lead for OMA, he helps members make energy-related decisions and provides subject matter expertise to OMA staff and members regarding energy regulations and policy concerning customer-sited resources and energy technologies. Before joining our team, Ryan graduated from University of Dayton with a Bachelor of Mechanical Engineering and a Master of Science in Mechanical Engineering. During his graduate studies, he performed 38 industrial energy audits with the UD Industrial Assessment center. He also completed "Compressed Air Challenge" Level 2 training and has published about sustainable manufacturing. Ryan's passion for sustainability led him to spend time abroad with the University of Dayton (UD) ETHOS program where he worked with wind turbine installations in India and cook-stoves in Ghana. He followed John Seryak and Greg Raffio's footsteps as president of the UD Sustainability Club and also helped UD to develop the Hanley Sustainability Institute. Ryan is a regular member of our company event planning and retreat planning teams. In his outdoor free time, enjoys going for long bike rides, with back-to-back centuries as his crowning achievement. In his indoor free time, he enjoys board games and Mario Kart.

Shawn Brown

Shawn has overseen approximately one thousand utility-scale measurement and verification (M&V) projects, which have measured energy savings on compressed air systems, industrial equipment, chiller plants, pumping systems, HVAC, et cetera. Starting in 2009, Shawn was Go's technical and project lead for utility-scale M&V and main point of contact for all work in Dayton Power & Light territory, until closure of DP&L's programs in 2020. Shawn's natural proclivity for perfectionism brings necessary exactness to his work. As a skilled computer programmer, Shawn leads Go's intellectual property development. He recently condensed our team's deep and practical energy experience into a tool called Energy Regression Generator (ERG), which can quickly analyze millions of utility data accounts to disaggregate space conditioning, temperature change-points, and baseload energy consumption. ERG is the platform that allows Go to cost- and time-effectively perform portfolio energy analysis and consulting services. Outside of work, Shawn has been coaching soccer for fifteen years. He is currently the head coach for a high school girls' soccer program, and he is also a club soccer coach.

Suzanne Lentz

Job Titles:
  • Office Manager

Wyatt Elbin

Job Titles:
  • Member of Go 's Distributed Energy Resources
Wyatt is a core member of Go's Distributed Energy Resources team, working with renewable energy, demand response, energy storage and grid interactive technologies. He helps Go's client understand the technical and economic feasibility for renewable energy and energy storage projects, assists them with market engagement, and helps them navigate the complex world of renewable energy procurement for both on-site and off-site opportunities. Wyatt also supports our energy markets and policy consulting services for clients like the Ohio Manufacturers' Association, where he brings a deep knowledge of energy markets, energy procurement strategies, and corporate sustainability. His passion for helping businesses and organizations holistically manage their energy loads lets Wyatt support some of our most cutting-edge strategic energy management projects for our large and institutional clients. There, he leverages his understanding of how energy markets, regulation, policy, and corporate sustainability interact and how businesses can influence each of these. Wyatt has a diverse engineering and project management background, with a Bachelor of Civil Engineering and a Master of Science in Renewable and Clean Energy from the University of Dayton (UD). Prior to Go, Wyatt gained experience with design and construction project management. He has also held corporate energy management roles for years at Marathon Petroleum and bp, where he performed energy purchasing, participated in regulatory processes through various industrial energy groups, and managed renewable energy assets and corporate sustainability strategies. Prior to starting his professional career, Wyatt's innate curiosity and passion for problem solving lead him to be heavily engaged in UD's ETHOS program, which is dedicated to engineering immersion service projects around the world. He worked in Cameroon, India, and Appalachia, as well as served as the program's interim director. After graduate school, Wyatt lived in a lay Marianist community and managed an urban farm in East Dayton. Now, Wyatt resides in rural, NW Ohio and lives in an energy efficient home that he designed and managed the construction of. He is an avid gardener, fermenter of all things, homebrewer, coffee roaster, steel bike collector, and novice carpenter. He and his family enjoy camping in their popup camper and completing homesteading projects on their land.