The Illinois Power Agency, in collaboration with ILLUME Advising (ILLUME), a national research firm selected as the Evaluator of Illinois Solar for All (ILSFA), has released the 2023-2024 Program Year Annual Evaluation Report. The ILSFA program must undergo regular evaluation to measure its impact and identify future opportunities for improvement.
In addition to reporting the overall program metrics, ILLUME evaluated energy, environmental, and social impacts and findings for projects approved in and energized by the end of the 2023-2024 program year, which ran from June 1, 2023, to May 31, 2024. Job and economic impacts for these approved and energized projects were also analyzed to determine the financial benefits passed down to program participants.
Findings from the report include:
- Projects fully constructed and energized by the end of the 2023-2024 program year are anticipated to produce over $66 million in net bill savings for participants.
- An estimated 40.5 GWh in first-year electric energy savings have been approved in the 2023-2024 program year, of which 40% came from Community Solar projects.
- From the 2021-2022 program year to the 2023-2024 program year, the number of residential projects submitted increased from 207 to 1,340 due to a backlog of projects from a single vendor, representing a sixfold increase in solar capacity submitted.
- The average per-participant monthly net savings range from $106 to $55 (72% and 88% of the average bill, respectively) for Residential Solar (Small and Large) participants.
2023-2024 Program Year Evaluation Report Webinar
The Illinois Power Agency is hosting a webinar in which ILLUME will present its findings from the 2023-2024 Program Year Evaluation Report, answer questions, and share planned data collection and plans for future evaluation reports.
Date: June 18, 2025
Time: 4 p.m. CT
Registration is required to attend this webinar.