About

Course Locations


Castle Worldwide Testing Centers


Castle delivers tests for some of the best testing programs in the world. Their mission is to provide you with a safe, secure, comfortable, and convenient testing experience.

Online Training


play-video-buttonThe beauty of Online Training is it is available anywhere you have an Internet connection. Get signed up today & begin right away in the convenience of your home or favorite cafe.

Solar Living Center


The Solar Living Center, home to the Solar Living Institute and the Real Goods Store, is a world-famous demonstration site for renewable energy, green building, alternative fuels, permaculture, and sustainable living technologies. The 12-acre Solar Living Center is located 90 miles north of San Francisco on Highway 101, approximately ...
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ABOUT SLI

The Solar Living Institute is a 501 (c)(3) educational nonprofit organization offering instruction in solar training and sustainable practices.  Founded in 1998, we have been providing professional solar training and a wide array of sustainability courses for over 15 years. Our courses are taught by experienced practitioners who bring years of real world knowledge to the classroom with a focus on helping students prepare for job opportunities, start businesses, and live more sustainably.

ACCREDITED BY IREC - Registered Provider of NABCEP

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