12-5 p.m. • Lake Snowden

Design, build and operate a boat that uses nothing but solar, wind, and/or muscle power in any desired combination. Build for speed, endurance and maneuverability using no combustion engines or energy storage on board. Teams are encouraged to apply, but individuals are also welcome. Cash prizes! Slalom Race: $1,500 prize; Speed Race: $1,000 prize; Remote-controlled Race: $500 prize.  The event will take place during the Ohio Paw Paw Festival at Lake Snowden near Albany.   Click here for full details. Register by Aug. 19 at UpGradeAthens.org/2016RenewableEnergyRegatta.