ROSEMONT, Ill. & PORTLAND, Maine–(BUSINESS WIRE)–Intersolar & Energy Storage North America (IESNA), the premier U.S. event series for solar, energy storage, EV infrastructure, and manufacturing, today opened registration for its June 15-17 regional event at the Donald E. Stephens Convention Center in Rosemont, IL. Held for the first time as IESNA Midwest, the 2026 event follows the acquisition and rebranding of Midwest Solar Expo, furthering its mission to illuminate renewable energy inno