Our TeamAt ERI, our team of engineers, project managers, and energy specialists are dedicated to delivering practical, high-impact energy solutions. With deep technical expertise and a collaborative, hands-on approach, we help clients turn complex energy challenges into real-world results. We value integrity, responsiveness, and staying ahead of the curve in energy efficiency and sustainability.
Founder and Principal
Eric Noller, PE specializes in innovative utility program implementation, emerging technology studies, and sustainability planning. He is a registered Professional Engineer and holds a Bachelor’s Degree in Mechanical Engineering from UC San Diego and a Master’s in Mechanical Engineering from San Jose State University, with a focus on alternative and renewable energy resources. Eric leads efforts in supporting utilities, municipalities, and private-sector clients with energy and water studies, technical program support, emerging technology assessments, and decarbonization strategies.
As Principal, he provides strategic leadership, overseeing business development, client engagement, and company growth. Under his direction, the firm has become a trusted partner for business and utility clients, helping them evaluate projects based on investment value, energy and cost savings, operational benefits, and long-term performance. He is committed to expanding impact by fostering innovation, building strong industry partnerships, and driving sustainable energy solutions that align with evolving market needs.
Outside of work, Eric enjoys exploring the outdoors with his wife and two boys, attending concerts, snowboarding, and coaching his sons’ baseball teams.
Engineering Manager
Ethan started his career at the Industrial Assessment Center at SFSU performing energy assessments for industrial and manufacturing facilities in Northern California. He continued his education at UC Berkeley, where he obtained his Master’s in Mechanical Engineering with an emphasis on advanced energy technologies. Ethan then joined the team as a project engineer performing energy audits, technical reviews, workpapers, and program implementation across the western United States.
He has developed expertise in municipal wastewater, industrial processes, commercial buildings, and program incentive processing. In his current role, Ethan leads engineering efforts in development, training, quality control, and delivery of all products. He spends his free time working on his house and garden with his wife, two children, and cat.
Senior Energy Engineer
Gretchen leads emerging technology studies exploring innovative solutions to save electricity and natural gas in commercial, industrial, and agricultural buildings. She is a trusted consultant to greenhouse and indoor farming businesses across the United States. Gretchen is also the Executive Director of Cornell University’s Greenhouse Lighting and Systems Engineering (GLASE), an academic consortium pioneering climate-smart agricultural technology demonstrations and workforce development.
She has worked with hundreds of growers and researchers to optimize greenhouses and indoor farms through her emerging technology research, efficiency program implementation, and consultation with growers across North America. She is a licensed Civil Professional Engineer in California and Vermont. Gretchen lives in Vermont with her partner, their five cats, and many houseplants.
Project Manager
Keely holds a background in Political Science and Environmental Studies, graduating with a Certificate of Appreciation from the Environmental Studies Department for her work. She is an accomplished office administrator and manager with over 12 years of experience in a variety of industries. Keely is a practiced verbal and written communicator and prides herself on attention to detail and organizational skills.
She wears multiple hats, including internal operations management, program management, marketing, and more. In her off time, Keely enjoys spending time outdoors, long walks, strength training, playing with her two cats, advocating for environmental and social causes, and exploring all the great food, drink, and cultural spots the Bay Area has to offer.
Associate Engineer
After working in the U.S. Navy, specifically in a steam power plant, and as a Diesel Technician along the East Coast, Stephan and his wife moved to California so he could pursue a degree in Mechanical Engineering. After moving to San Francisco, he was given the opportunity to intern with the Industrial Assessment Center at San Francisco State University for three years. Without this experience working with professors who have been in the field for decades, his passion for this career would not be where it is today.
Since joining the team, working with the group has reinforced his drive to continue helping people reach their sustainability goals. In his free time, Stephan and his wife like to take their Black Lab out to explore the beauty of the West Coast.
Sales and Outreach Specialist
Tyler leverages his communication skills to connect with potential clients and organizations to support ordinance requirements, program support and implementation, custom projects, and more. He has a background in customer service, technical support, and B2B sales, spanning 13 years in various industries.
In addition to his sales and technical experience, Tyler has over three years of professional networking experience. In 2024, he served as President in his local BNI Chapter, running weekly meetings for 25+ business professionals to pass business and help each other grow. During his presidency, his chapter was recognized for generating millions in closed business for him and fellow members.
Born and raised in Vermont, Tyler has been an avid skier since he could walk, and enjoys cycling with his partner, taking in the sights and sounds of all that his beautiful state has to offer. Cat dad of five cats (all boys…), there is never a dull moment at home.
