• We hope you enjoy SEI's Solar Electric Handbook: Photovoltaic Fundamentals and Applications and we look forward to helping you become a more knowledgeable practitioner in photovoltaic (PV) technologies and concepts. Click here to sample the Solar Electric Handbook.

    Due to COVID-19 restrictions we are unable to ship this item outside of the US, Mexico or Canada. Please email [email protected] for options.

    If you are purchasing 5 or more books, please order by calling 970-527-7657 option 1 or emailing [email protected] to get bulk book order discount pricing. (Only applies to regular retail pricing, and not to sale pricing.)
  • This book is our previous publication adopted widely in the industry and for solar electric training in years past.  There is still a lot of useful information in this book especially on battery-based solar PV systems, but if you are interested in our updated publication and most recent industry standards and information please check out our new Solar Electric Handbook.

    Due to COVID-19 restrictions we are unable to ship this item outside of the US, Mexico or Canada. Please email [email protected] for options.

  • Desde el 2003, SEI ha publicado libros de texto liderando la industria y elevando los estándares de calidad de programa de capacitación en Energías Renovables en EE.UU. y en el mundo entero. Nuestro libro complementario Manual de Diseño e Instalación de Sistemas Fotovoltaicos, incluye tanto temas básicos como altamente técnicos. Esto lo hace útil para todas las personas involucradas en este mercado, desde principiantes hasta profesionales. Click aquí para ver una muestra del libro.
  • SEI Beanie

    Warm up in the winter while representing SEI! The SEI Beanie is 100% acrylic, unisex, one size fits most. This beanie comes in black or gray. Please place your order and then email [email protected] or give SEI a call at 970-527-7657 option 1 to specify which color you would like.
  • On trend in every way, the SEI Colorado Trucker Hat features breathable mesh, an unstructured crown, fully curved visor and an open back snap or strap closure. Designed and tailored with our classic fit, and great design.  Show your SEI pride and love for Colorado while wearing this hat! • Full crown top-stitch, matching under-visor • Snap-on mesh back, strap on solid back • Cotton canvas w/ soft textured mesh • Full curve visor
  • Keep on Truckin' with the SEI Trucker Cap! Features:
    • Unique enzyme wash to make cap look worn and dirty.
    • Pre-curved visor with 8 rows of stitching.
    • Low crown for a great fit on all head sizes (not too tall like most trucker hats)
    • Full crown topstitching.
    • Fabric:    100% cotton, enzyme washed
    • Shape:    Unstructured low profile
    • Closure:    Plastic strap Sizing:
    • One size fits most
  • SEI Hat

    As an extra bonus when wearing the SEI Hat under your hard hat: SEI knowledge and information from our instructors and curriculum will radiate through osmosis into your brain.  (Kidding - but you never know!) This hat has a great low crown fit with an adjustable back.  Show your SEI pride!
  • SEI is all natural - non-fracked - renewable - 100% pure - fossil fuel free - clean energy - SOLAR!  This has been a student favorite t-shirt since we added it to our store.  Get yours today and tell the world that you support renewable energy and SEI's non-profit mission.
  • Envisioning a world powered by rainbow energy! Our Pride Month tee is now available for a limited time. In the US, Pride Month represents visibility, community building and elevation of voices in the LGBTQ+ community. We're proud to support the LGBTQ+ community worldwide as we come together and celebrate #Pride2019
  • Of all the t-shirts we have ever offered, this one is the closest to our hearts.  Recently we lost a dear friend and an amazing SEI Instructor, Mike Sullivan. The artwork design on this shirt was created by Mike's daughter, Sherri Sullivan. Buying this T-Shirt will not only show that you are living your solar adventure, but you are also honoring someone who lived his life everyday living his solar adventure as well.

    Show your SEI pride with this comfortable t-shirt.  Soft and not too heavy, these shirts will show the world that you are a proud SEI Student, Alumni, or supporter of our non-profit mission.  Dogs even love wearing them too!
  • It can get a little chilly here in Colorado even in the summer time.  Cozy up during the SEI potluck while sitting around the fire with all the new friends you made while you were in class.  Sturdy quality creates warmth and comfort with this zip hoodie. Not too heavy and not too light - this is the perfect in between sweatshirt you’re sure to be grabbing all year round. • 50% cotton, 50% poly, 7.5 oz • Front pouch pocket. After your order is submitted a SEI representative will email you for your color - style - and size, or call (970) 527-7657 before ordering to determine availability in certain sizes and colors.
  • Put your little one on the path to going SOLAR PRO!  This comfortable onesie is a great way to have your family show their SEI pride.  Now when you sing them to sleep with the song, "You Are My Sunshine" you all fall asleep happily knowing the purchase this onesie has helped our non-profit mission and our vision of a world powered by renewable energy.
    • Now your dog can show their SEI pride too!
    • Collapsible folding 600D Polyester bowl for feeding your pet on the go.
    • Bowl comes folded in half with velcro tab closure and includes PP plastic clip – great for attaching to belt loops or leash.
    • Holds approx. 16 oz of water or pet food.
    • Ideal for a day in the park, camping, or just going for a walk.
  • We haven't figured out how to harness the power of a dog pulling on a leash for a new form of renewable energy, but this retractable leash will help you while on a walk with your furry friend.  Retractable Leashes are easy to use, durable and functional. Allow your pet to explore without the leash becoming tangled or slack.
    • Comfort grip handle
    • One button stop and release action
    • All web construction for safety
    • Allows pets to explore from 2' to 16'
  • If you share our vision of a world powered by renewable energy - protect your eyes and overall vision with these SEI logo safety glasses. Comfortable, ultra lightweight frameless design. 9.5 base curve offers great wrap around protection and are available in clear or tinted styles. Hard coated polycarbonate lens offers 99% UV protection. Meets the requirements of ANSI Z87.1 Impact. Manufactured under ISO 9001/2000 quality system. Complies with ANSI, ISO 9001.
  • Safety Gloves

    Keep your hands safe while showing your SEI pride while in the Paonia, Colorado lab or out on a job site. Breathable Black Knit with cut, puncture, & abrasion resistant palms, these gloves will get the job done and keep your hands clean and cut free!
  • Safety Vest

    Be seen and stay safe while showing your SEI pride. This safety vest is made of 100% polyester mesh that keeps you cool and comfortable while on the construction site. The zipper closure adds a secure fit that will stay put throughout your work day. Each safety vests features contrasting high-vis orange trim for enhanced visibility. Rated ANSI Class 2.
  • Take your "coffee to go" to a whole new level. The handle of this handy, portable mug is a carabiner clip, perfect for hanging from a belt loop or bag strap. The sturdy mug is made from double-walled stainless steel, which is better insulation and lighter weight than solid metal. The 12 oz. mug can hold an early morning's worth of coffee, or a generous portion of campfire stew during the SEI potlucks at our Paonia, Colorado campus.
    • Stay cool while you are at the SEI training facility or on a job site with this handy SEI Cooling Fandana.
    • Unique tubular shape accommodates a variety of styles and lets you wear as a neckerchief, headband, beanie, cap, do-rag and much more!
    • Fabric is made of 100% microfiber polyester and designed to wick moisture and perspiration from your skin while cooling your skin.
    • The specialized air pocket construction quickly absorbs and retains water while enhancing air flow into the damp cloth for a prolonged cooling effect.
    • Simply rinse the Fandana in water and wring to activate the cooling technology.
    • Designed to retain water while remaining dry to the touch.
    • Fandana is washable and reusable, just rewet the towel when it begins to dry out.
    • Great for keeping you cool during SEI Lab Week or other exercise activity.
  • Visit the SEI Bookstore and bring home one of these for your kids and set them down the path of understanding renewable energy and how it makes the world move.  The SEI Solar Rover Kit is built by using the parts provided and your own soda can. Helps children learn how sunlight is converted to energy. Also introduces children to green concepts such as repurposing, upcycling, and alternative energy. Detailed instructions are included.
  • Double Walled Vacuum Insulation together with exceptional splash proof lid for extreme temperature retention and elimination of any condensation. Your cup will always remain a comfortable temperature for you to hold but your drink inside will be either ice cold or piping hot ALL DAY LONG even in the hot summer heat on top of a lab station in our SEI training facility.
  • Pathfinder

    The Solar Pathfinder™ is non-electronic. Simple and straight-forward in its engineering, it requires no special skills or technical know-how. One simple tracing does the job and becomes the permanent record for the solar data. By combining the site-specific shading data of the Solar Pathfinder™ with the published global weather data, an accurate solar site analysis can be made. This insolation data, on an hourly and monthly basis can then be applied to architectural, engineering, solar, and ecological applications. All of this data is integrated in the Solar Pathfinder Assistant software, sold separately.