RE+ Event RE+ Mid-Atlantic July 26 - 27, 2023 Philadelphia, PA Learn More Save the Date for RE+ Mid-Atlantic! This new clean energy event focusing on the region will debut July 26-27, 2023, in Philadelphia, PA. Share Share on TwitterShare on FacebookShare on LinkedIn Powered by SEIA and SEPA The event is produced by SEIA and SEPA. Unlike other solar conferences, all proceeds from the event support the expansion of the U.S. solar energy market through both associations’ year-round research and education activities and SEIA’s advocacy.