Learn from an expert in your field

Take an online course in solar, green building, renewable HVAC, geothermal and more.

Earn Continuing Education Credits

Our online courses offer continuing education credits for AIA, LEED, NABCEP, BPI, and more.

Gain real skills and change the world

We're on a mission to provide professionals with the knowledge and real-world skills they need to continue making a positive change in the world. We work with industry experts to develop and teach top-notch curriculum, continuously update our online platform to make learning and teaching convenient and intuitive, and forge long-lasting relationships with leaders in the clean energy and sustainability spheres.

Join our community of over 44,000

Our community is a blend of over 44,000 engineers, installers, contractors, policy makers and changemakers. The experts who create our courses and students who enroll work hard every day to change the world. Enroll in one of our free courses, or check out our free tools to see if there's a calculator or guide to make your job easier!

Featured Courses