Founder of Mayfield Renewables, an engineering consultancy for the solar and storage industry, Ryan has been widely known for his commitment to understanding and demystifying codes and standards for decades. He has over 25 years of experience designing and consulting on solar PV projects. His career has blended technical expertise with an affinity for writing and education. Ryan was also the PV Systems Technical Editor for SolarPro Magazine from 2010 to 2018, and authored the PV Design & Installation for Dummies in 2010. He is passionate about bringing up the next generation of experts through teaching nationwide PV courses on topics such as: the National Electrical Code, commercial and utility-scale PV systems, energy storage systems best practices and electrical testing O&M best practices. He is also a NEC Code Making Panel 13 member tasked with reviewing NEC sections 480 and 706.

As CEO of Mayfield Renewables, Jacob Betcher brings core beliefs and an ethos that mirrors those that the solar+storage industry has come to know in Mayfield Renewables. His experience growing product engineering-focused companies Apricity Code and Luxel taught him what it takes to successfully lead technical-minded teams. Jacob has been leading engineering project and product-based businesses for over 15 years. His affinity for problem solving and digging into the details lends to a strong understanding of economic industry drivers as well.

Jon La Follett is an industry veteran who brings an understanding of the developer's perspective to the Mayfield team. In his role as Director of Engineering, Jon is responsible for leading the engineering team and refining engineering products at Mayfield, while also serving as an interface between our clients and the team. A PhD physicist by training and an engineer at heart, Jon describes his 20-year career as an arc from lab-based fundamental science research & development to solving more applied problems with direct, near-term impacts on people. This experience makes him adept at solving real-world problems with science and engineering by developing products to meet market value drivers via agile R&D and product development. Jon has a proven track record and is passionate about helping commercial and industrial businesses evaluate pathways to lower carbon emissions and reliable power with distributed generation and energy storage.

Ryan brings 10+ years of expertise in the industry as an electrical engineer and project manager through 100 MW+ of designs. With a passion for all things engineering, Ryan Mateo joined the solar industry immediately out of college after earning his double major in Mechanical and Aerospace engineering from UC Davis. After 3 years of product development on ground and roof racking, he pivoted his career towards the electrical side of the industry. It was through system designs that he was able to find his true passion for influencing quality, safe solar systems. He takes particular interest in Microgrid and EVCS integrated projects to promote resiliency across the nation’s struggling electrical grids.

Adam Stone brings a wealth of experience in product lifecycles, gained during his tenure at a metal fabrication company, where he worked from product conception to the production line. He holds a Bachelor of Science in Electrical Engineering from the University of North Florida. His professional journey includes significant experience in medium—and high-voltage substation design, as well as mechanical, electrical, and plumbing (MEP) design. He currently holds his Professional Engineering license in the state of Florida and plans to expand to other states. At Mayfield Renewables, he is further developing his expertise as a licensed electrical engineer. His diverse background and dedication to continuous learning make him a valuable asset in advancing the company's mission to deliver innovative renewable energy solutions, and also sharing his knowledge with others in the industry.

Lucas dove into the renewables industry straight out of college by moving from Madison, Wisconsin, to Portland, Oregon, to join a PV contractor. In the years since, he has held many roles in the solar and energy storage industry spanning marketing, market research, product development, and project coordination. Lucas’s expertise blends engineering acumen and industry knowledge with a backbone in technical content development. He now holds both a marketing degree and a degree in Renewable Energy Engineering from Oregon Institute of Technology. In his current role at Mayfield, he brings his talents in research and writing and provides much of the leadership in our educational content development.

Zach brings 8+ years of distributed energy industry and software development experience to the task of microgrid feasibility, a service he leads for Mayfield. He has a passion for teaching, which he developed early in his career providing robotics instruction to youth, and later leading educational events and energy site tours through his role as Program Manager at Solar Oregon. He is a born tinkerer, and has enjoyed creating practical tools ranging from computer vision algorithms for PV Evolution Labs in 2022 to energy modeling software for Mayfield. He spends much of his free time reading old books--ask him what he is reading currently.

Tyson is enthusiastic about the forthcoming energy transition and is excited to contribute to renewable energy solutions. Tyson calls Portland, OR, home, where he is finishing his B.S. in Renewable Energy Engineering from the Oregon Institute of Technology. His studies focus on electrochemical storage technologies that best empower intermittent RE generation and distributed energy resources. Beyond work, Tyson is an avid musician and especially enjoys journeying into the many green spaces, coastlines, and mountain trails of the great Pacific NW.

Alberto embarked on a journey in the solar industry in 2016. His resolute dedication led him from being a solar installer to assuming leadership of installation crews for both residential and commercial projects. Alberto's adeptness in overseeing intricate installations earned him recognition, paving the way for his transition to the role of a skilled Design Engineer. He has over 9 years of experience developing residential and commercial designs. Alberto holds a Bachelor of Science degree in Electrical Engineering from The University of Texas Rio Grande Valley and boasts the distinguished NABCEP PV Installation Professional certification, a testament to his commitment to upholding industry standards and his profound knowledge of PV systems. Teaching and communicating design topics to demystify for others has become a new interest for Alberto.

Greg has over 17 years of experience in PV installation and system design, beginning his career in renewables at Mr. Sun Solar in 2007. He transitioned to PV system design in 2013, leading teams for various Portland contractors before joining Mayfield Renewables in 2020.
Working with smaller, local contractors, Greg was responsible for the entire design process. From conducting preliminary site evaluations to working in tandem with structural engineers, AHJs, and inspectors, he has truly seen and done it all. He holds certifications in off-grid and battery backup storage, advanced PV design, and is a licensed Solar Thermal Journeyman Installer in Oregon since 2009.

Vivian brings two decades of experience in solar photovoltaic (PV) design and installation. Vivian’s journey in the solar coaster has grown along with the industry, starting with small community systems and progressing to the multi-megawatt systems. Her role has spanned engineering optimization design, interconnection analyses, project management, advanced performance modeling, commissioning, performing as owner’s engineer, providing construction assistance, and completing repowering analyses. Vivian holds a Master of Solar Energy Engineering from the University of Massachusetts and a Bachelor of Science in Mechanical Engineering from the University of Puerto Rico – Mayagüez. She is a Certified Professional Electrical and Mechanical Engineer (P.E.) with licensure in multiple states, including MA, CA, GA, NJ, and MD.

Mike has a Bachelor of Science in Mechanical Engineering from Iowa State University and is a P.Eng (Professional Engineer) in Canada. Before joining Mayfield Renewables, he had over eight years of experience as a project engineer with multiple EPCs in the oil and gas industry before pivoting to concentrate on photovoltaics several years ago. It wasn’t until he first became a residential PV installer in 2018, including his first opportunities to design smaller commercial systems, that his renewables passion took root, driving a career transition to clean energy technologies. Since joining Mayfield Renewables in 2021, Mike has completed the NABCEP PV Associate program (2021) and the NABCEP PV Installation Professional certification (2023).

Hamilton has over ten years of PV engineering experience. His solar industry background began in New Orleans where he was a part owner and engineering director for a PV installation contractor. This gave him a fundamental understanding of what it takes for PV projects to be successful from beginning to end. Prior to joining Mayfield Renewables, he was lead designer focusing on C&I projects in the state of Georgia. Hamilton’s educational background is in structural engineering. He is a licensed structural engineer in the state of Arizona where he worked prior to getting in the solar industry. Interest in efficiency improvements, including gaining his LEED AP credential, led Hamilton to his career in solar energy.

Israel has a decade of experience in both residential and commercial solar. He began his career in residential solar after college in 2015, working in multiple roles such as sales, permit design, and permit running. In 2017, Israel switched from residential solar to commercial solar, where he worked as an Electrical Design Engineer for Baker Electric until early 2025. Israel very much enjoys helping clients get through the commercial solar permitting process, delivering high-quality electrical drawings, responses, and providing thorough communication with his clients. Israel holds a Bachelor’s of Science in Environmental Engineering with a minor in Management Science from UC San Diego (2014), as well as his Engineer in Training (EIT) license.

Sam has over three years of experience specializing in transformers and harmonic filters. Prior to his career at Mayfield, Sam earned his BA in English and Philosophy from UW-Superior. Soon after completing his studies, he started working with Hammond Power Solutions in technical sales. Sam’s affinity for learning complex technical solutions quickly grew his role into a subject matter expert on the technical aspects of transformer specifying and configuration for PV & storage systems. Passionate about renewable energy, he enjoys expanding his technical repertoire and applying it to smarter, cleaner power solutions.

Justine has been working in the renewable energy industry since 1993. She has played many technical roles over these last thirty years, such as an NREL research assistant to a NABCEP-certified photovoltaic (PV) system installer, to a PV system designer and project manager. Justine’s previous experience includes reviewing electrical plan sets for PV and solar-plus-storage projects, acting as a project consultant and facilitator for commercial-scale solar-plus-storage systems, and acting as an educator for the solar industry both as a curriculum developer and IREC Certified Master Trainer for Solar Energy International and as a senior technical editor and author for Home Power Magazine. She is a principal voting member of Code Making Panel 13 (CMP-13) for the National Electrical Code. Justine has cultivated a deep understanding of the industry and has honed her skills to relay knowledge about industry best practices and code requirements. As a technical sales engineer, Justine aims to break down the complexity that can exist between paralleling various power sources, and assist clients in implementing Generac’s microgrid control solutions into their renewable energy projects.

Laura, a graduate of North Carolina State University, started her energy career in industrial energy efficiency. After pivoting to the realm of distributed energy, she found her passion in accelerating microgrid deployment to address issues like grid resilience, energy access, and climate change. Laura supports various aspects of early-stage project engineering, working closely with customers to understand the unique goals of their project and making recommendations on how to best implement after careful assessment. To ensure customer confidence and a smooth project execution process, she supports feasibility modeling, design review and technical customer support.

Focusing on distributed energy resources (DERs), bidirectional electric vehicle (EV) charging and energy systems, Scott has global oversight over the technical decisions made in accordance with UL, International Electrotechnical Commission (IEC) and other applicable standards for this technical focus area. He has global responsibility for grid-interactive inverters, EV power export equipment (EVPE), power control systems, DERs, EV charging systems and related technologies. Scott brings much expertise to the topic around UL3141 as he participated on the committee for this standard, the Outline of Investigation for Power Control Systems. He also specializes in other DER focused standards such as UL 1741 for system equipment use with DERs, UL 9741 for EV Power Export Equipment, and IEEE 1547/1547.1 for utility interconnection.

Nicholas Bartlett, P.E., owner of Atar Fire, is a Licensed Fire Protection Engineer and Professional Engineer throughout the United States with 20 years of fire protection experience. His experience spans testing and research, fire modeling, over 12 years of AHJ work, and training nearly 2000 AHJs and engineers globally. Nick has been involved with the code development process for the International Fire Code (IFC), National Fire Protection Association (NFPA), and UL Standards committees. Committee work includes serving as a technical member of NFPA 855, Standard for the Installation of Stationary Energy Storage Systems; NFPA 800, Battery Code; UL 9540, Energy Storage Systems; UL 1487, Battery Containment Enclosures; UL 1973, Stationary and Motive Batteries; NFPA 2, Hydrogen Technologies Code; and NFPA 1140, Wildland Fire. He has participated in numerous large-scale fire tests, performed dozens of NFPA 68/69 analysis, and has aided many OEM and EPCs with product-level and site-specific hazard mitigation analysis. This vast experience has given him a deep understanding of fire protection and life safety for renewable energy technologies with a focus on battery storage.