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Coal India Invites EOI for 150 MW Solar + BESS Project Under SECI’s ISTS Tender

Coal India Ltd. (CIL), a Maharatna PSU under the Ministry of Coal, has floated an Expression of Interest (EOI) for the development of a 150 MW ISTS-connected solar PV project with co-located Battery Energy Storage Systems (BESS). The initiative aligns with CIL’s plan to participate as a solar power developer under SECI’s 1,200 MW ISTS-XXI tender.

The EOI seeks reputed EPC partners capable of delivering turnkey solutions covering land acquisition, grid connectivity, engineering, supply, civil works, installation, testing, and commissioning. The scope also includes SCADA/EMS/WAMS, metering, pooling substation, and transmission line up to the ISTS point. EPC firms must ensure land availability for the full 150 MW and secure CTU/ISTS connectivity.

As per SECI’s requirements, BESS sizing must be 0.5 MW/3 MWh per 1 MW solar capacity, enabling reliable supply during peak demand. Applicants must also ensure compliance with CUF obligations, forecasting, scheduling, and ALMM regulations.

CIL has asked for detailed submissions including company credentials, land bank details, CTU connectivity plans, financials, cost estimates (with revised GST rates), and project timelines. The EOI is exploratory and aimed at shaping the upcoming EPC tender in line with SECI’s RfS/PPA structure.