Solar Cup Boat Building and Racing Competition

Solar Cup is the world’s largest solar boat building and racing competition in the world! This innovative seven-month water education and environmentally sustainable technology program is funded by the Metropolitan Water District of Southern California and its member agencies including West Basin Municipal Water District.  The culminating solar boat racing event takes place on May 18-20, 2018, at Lake Skinner in Temecula!

Solar Cup 2019 School Sponsorship Application is now available! 

Appliation deadline is Friday, May 25, 2018. Sponsorship Application


Solar Cup 2018 Boat Building and Racing Competition Coverage


This year, West Basin is proud to sponsor the following two South Bay high schools and one educational non-profit organization with funding to purchase and install electrical and mechanical equipment for their boats:


Solar Cup Technical Workshop #2 - Occidental College

February 3, 2018 - Los Angeles

Solar Cup team representatives visit the college campus, interact with college engineering students serving as technical resource experts for the program, and are immersed in the technology of motors, batteries, and electric circuits.  They also learn about the current water supply issues facing the Southern California region, that water conservation needs to become a long-term way of life, and how to create effective messages for their public outreach project, a water conservation Snapchat story.


Solar Cup Technical Workshop #1 - Metropolitan Water District of Southern California Headquarters

December 2, 2017 - Los Angeles

Solar Cup team representatives met with Metropolitan Water District staff members and technical advisors to be introduced to basic electricity, battery, and motor concepts, elements and writing structure for a strong technical report submission, and the SnapChat Story format for the "Conservation: It's not about the weather; It's about forever" public service announcement.


Boat Building Workshop, Three Valleys Municipal Water District

November 4 & 5, 2017 – Claremont

Solar Cup student teams converged under a huge tent to assemble pre-cut wooden pieces into 16-foot hollow canoe hulls. Students sawed, screwed, nailed, and glued into the afternoon, became familiar with terms such as “bow,” “stern,” “chines,” and “bulkhead,” then hauled their masterpieces back to school. Over the next 7 months, teams will install motors, propellers, drive shafts, and solar panels to operate their boats. Click on the links below to view full photo albums of the event.