The Program has been recently made aware that Solar Data Systems Incorporated (SDSI) has ceased operations. SDSI manufactured meters, including some which were ANSI C.12 standard compliant, and provided metering support services, such as automated meter reading and reporting.
As noted in Section 6.A of the Program Guidebook, AVs are responsible for entering system production in the tracking registry where the system is registered, and as noted in section 4.N, systems over 10 kW and less than 25 kW in size must utilize a production meter that meets ANSI C.12 standards. As previously noted, SDSI provided ANSI C.12 meters and electronic data reporting services utilized on some Illinois Shines projects. Although it is the Agency’s understanding that SDSI meters will continue to function, auto-reporting of production data is no longer supported as of April 30, 2026.
The Program acknowledges that the lack of auto-reporting on these systems may cause challenges to meet the upcoming production delivery deadline for the 2025-26 Program Year and is offering a limited one-time exception for projects affected by this shut down. For this limited one-time exception, affected projects capable of remotely communicating meter readings from a non-ANSI C.12 certified meter (e.g. through the inverter) may report that production for the 2025-26 Program Year only. If it is not possible to obtain a remote meter reading, AVs remain obligated to report the required data and should work with the impacted customer(s) to report meter readings from the SDSI meter via photograph.
The Program Administrator reminds AVs that all REC transfers must be completed by 11:59 p.m. CPT on May 31, 2026. RECs will be counted toward the 2025-26 Annual Report based on the date that their transfer is complete, NOT the day that their transfer is initiated or when they are generated. Ensuring REC transfers are complete will help minimize potential Drawdowns on posted collateral.
Although availability of auto-reporting is not required by Illinois Shines, moving forward, AVs with affected projects must be prepared to report production and either (a) work with the customer to install a meter that meets the ANSI C.12 standard and reports remotely or (b) have the customer report readings from the SDSI meter via photograph to remain in Program compliance.
Thank you!
Illinois Shines Program
[email protected]