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Workshop Instructors

Since 1991, Solar Energy International has been dedicated to providing hands-on and online solar training and renewable energy education. At Solar Energy International, it's our people who make the difference. With 18 IREC certified trainers and 24 NABCEP Certified Solar PV Installers — more than any other solar training organization — SEI's experienced solar training team is on the forefront of renewable energy education.

Solar Training (Electric) Instructors

Andy Black is owner of OnGrid Solar, performing solar financial analysis and purchaser's consultations. Andy specializes in Find Out More >
Andy Black NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Solar Training (Electric) Instructors

Bill Hoffer has been working in the solar industry in the Pacific Northwest for more than 16 years. He is a Solar Energy International alum since 1994, a NABCEP Certified Solar PV Installer, and a Find Out More >
Bill Hoffer NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Solar Training (Electric) Instructors

Bob-O Schultze is a licensed electrician in both California and Oregon. He has been working in the solar industry for more than 20 years, and is the owner of Find Out More >
Bob-O Schultze NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Solar Training (Electric) Instructors

Brad Burkhartzmeyer is an experienced solar system designer, installer and Solar Energy International alumnus. He founded Sun's Eye Power Company Find Out More >

Brad Burkhartzmeyer  NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Solar Training (Electric) Instructors

Darren Emmons is a Washington state-based senior software engineer for Find Out More >
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Solar Training (Electric) Instructors

David Del Vecchio is a graduate of Georgia Institute of Technology with a Bachelors in Mechanical Engineering. He entered the PV industry in 1998 in North Carolina designing, Find Out More >

David Del Vecchio NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Solar Training (Electric) Instructors

Jack is a licensed Illinois attorney. He began a shift to a more sustainable career path by focusing on efficiency first. He studied with The Find Out More >

Jack O'Donohue ISPQ Certified PV Instructor
ISPQ Certified PV Instructor


Jack O'Donohue NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer


Jack O'Donohue NABCEP Certified PV Technical Sales
NABCEP Certified PV Technical Sales



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Solar Training (Electric) Instructors

James R. Kirby, AIA, is Vice President of Sustainability for the Center for Environmental Innovation in Roofing, Washington, DC. Kirby has expertise in roof system design and construction, Find Out More >

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Solar Training (Electric) Instructors

Jay Peltz has been working in the renewable energy field since 1993. He spent many years working as the head designer and technical support for Find Out More >

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Solar Training (Electric) Instructors

Jeff Tobe is the PV project coordinator and an IREC Certified PV Instructor at SEI. Also a NABCEP Certified Solar PV Installer, Jeff has designed and led system installations in a variety of Find Out More >

Jeff Tobe NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer


Jeff Tobe NABCEP Certified PV Technical Sales
NABCEP Certified PV Technical Sales



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Solar Training (Electric) Instructors

Joe Villacci specializes in system design, installation methods, and performance verification of solar electric systems. He works as technical trainer and curriculum developer for Solar Energy Find Out More >

Joe Villacci NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Solar Training (Electric) Instructors

"Solar Kelly" Larson operates a renewable energy design, installation and repair service in Northern Mendocino County, CA. She is an electrical engineer, and an Electrical Contractor, Find Out More >

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Solar Training (Electric) Instructors

Laura Walters helps coordinate and update the curriculum for SEI's internationally recognized PV training program, which includes creating the technical diagrams, working on SEI's PV textbook Find Out More >

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Solar Training (Electric) Instructors

Orion received his first glimpse into the potential of solar electricity while growing up off-grid in Northwest Montana and remains motivated by a desire to promote and educate the public on the Find Out More >

Orion Thornton NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Continuing Education Courses Instructors

Greg Smith has been a technical training specialist for the SMA Solar Academy since May 2008. He has 20 years of technical training experience specializing in curriculum development. Greg travels Find Out More >
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International Rural Development Instructors

Laurie Guevara-Stone is the international program manager at SEI. She has a Master's Degree in Energy Engineering from the Find Out More >
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Solar Training (Thermal) Instructors

Carl Bickford is Professor of Engineering and Renewable Energy at San Juan College in Farmington, NM. He has a Find Out More >

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Solar Training (Thermal) Instructors

Chuck Marken is an instructor for Solar Energy International and a licensed Electrical, Plumbing and HVAC-R contractor in NM. He started installing solar water heating systems in Find Out More >
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Solar Training (Thermal) Instructors

Vaughan Woodruff is owner of Insource Renewables, a solar design/build and consulting firm in Pittsfield, ME. A trained engineer and educator, Vaughan serves diverse roles in the solar heating Find Out More >
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Wind Training Instructors

Hugh Piggott of Scoraig Wind Electric is an international authority on home-built wind generators, and has been Find Out More >
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More Instructors

Before joining SEI, Brian Mehalic worked as the lead installer and project manager for EV Solar Products in Chino Valley, Arizona. He is a NABCEP Certified Solar PV Installer with experience Find Out More >

Brian Mehalic NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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As PV Program Coordinator, Carol Weis writes and updates Solar Energy International's PV and Advanced PV curriculum and instructs in both the hands-on and online workshops. Carol also organizes Find Out More >

Carol Weis NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Chris has a Masters of Science degree in Renewable Energy from Murdoch University.  His interest in renewable energy was sparked as a Peace Corps volunteer in Ecuador and he continues to pursue Find Out More >
Chris Brooks NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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E. H. Roy started learning about solar energy technologies in the early 1990s and left a career as a petroleum geologist in 1995 to join the PV industry. He is an SEI alum and has designed and Find Out More >

E.H. Roy NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Eric graduated from Rochester Institute as electrical engineer in 1986. He attended Solar Energy Find Out More >
Eric Westerhoff NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Flint Richter installed his first renewable energy system in 1998 on the path to a more independent lifestyle in Arkansas's Boston Mountains.  Years of experience installing battery based systems Find Out More >
Flint Richter NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Habiendo crecido en Costa Rica, es natural ser amante del medio ambiente. Mi pasión siempre ha sido conservar las riquezas naturales que Find Out More >

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Ken Gardner is a licensed Professional Civil Engineer, Professional Land Surveyor, Licensed Electrician, Licensed Solar Contractor, ISPQ Certified Instructor, and NABCEP Certified Solar PV Find Out More >

Ken Gardner NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Khanti Munro, a NABCEP Certified PV Professional and former ISPQ Certified Instructor for Photovoltaic Courses, has been involved in the Renewable Energy field since 2001. Earning a self-designed Find Out More >
Khanti Munro NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Kris Sutton has worked full-time in the PV industry since 1999. Kris is a NABCEP Certified Solar PV Installer and ISPQ Master Trainer. He regularly teaches technical Find Out More >
Kristopher Sutton NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Kyle Bolger has been serving society an assortment of remedies from breve's to bandages for most of his life. He now enjoys teaching and working with Renewables as a remedy for our current energy Find Out More >
Kyle Bolger NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Lena was inspired to take leave from her high school teaching career to explore the world of renewable energy. She has built her experience from SEI, taking classes, helping construct their PV Lab Find Out More >

Lena Wilensky NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Mike started working as a renewable energy professional in 1999. He's an electrical engineer and a licensed plumber -- a somewhat odd combination! He owns a small business designing, installing and Find Out More >
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Originally from Eugene, Ore., Paul Mync took several classes. His passion led him to the Bay Area where he worked as an installer for PV, DHW and solar assisted radiant floor heating. He left the Find Out More >
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Phil has been involved with photovoltaics and renewable energy education since 2004. He has installed systems in Colorado, New Find Out More >

Phil Friedman NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer


Phil Friedman NABCEP Certified PV Technical Sales
NABCEP Certified PV Technical Sales



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Rebekah Hren has been teaching PV workshops for Solar Energy International since 2007. A North Carolina native, her first PV system was a 300 watt array Find Out More >

Rebekah Hren NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Roger has been passionate about renewable energy since taking a summer's worth of workshops at SEI in 2002.  He currently works in the SF Bay Area, project managing installations ranging from 3kw Find Out More >


Calling the Pacific Northwest home, Ryan Bradt is a licensed Electrician and Administrator in Washington State with nearly 20 years of experience in the Electrical Construction Industry. Currently he Find Out More >
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Tim's renewable energy industry experience spans almost a decade. He began with his solar education at Solar Energy International and continued with his tenure as Lead PV and Solar Thermal Find Out More >
Tim Coats ISPQ Certified Master PV Trainer
ISPQ Certified Master PV Trainer


Tim Coats NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer





Tom is a licensed engineer with over 13 years of experience in the solar industry. He is the owner of Renewable Engineering, where Find Out More >

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Tommy began his career installing PV systems in 2003 in the San Francisco Bay Area. Prior to entering the industry, he received a B.S. from the University of California, Berkeley in Environmental Find Out More >

Tommy Jacoby NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Tony Diaz is a licensed roofing and electrical contractor in the San Francisco Bay area of sunny California. Tony has contracted and built 2kw residential on up to 1mw commercial elevated tracker Find Out More >
Tony Diaz NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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Zeke Yewdall grew up with off-grid PV in eastern Washington, and two engineering degrees later, decided to make a career of solar starting in 2002. He has designed and built grid-tied PV systems Find Out More >
Zeke Yewdall NABCEP Certified Solar PV Installer
NABCEP Certified Solar PV Installer



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