Approved Vendor registration applications are reviewed on an ongoing basis. However, to submit projects during the 2025-2026 project submission windows, entities seeking to become Approved Vendors must submit their applications by:
- June 2, 2025 – Residential Solar (Small and Large) sub-program
Applications must be approved before the submission window closes to submit projects. Learn more about the registration process. As a reminder, applicants must first be registered with Illinois Shines.
- Program Deadlines and Milestones
-
- All Regions