en.Wedoany.com Reported - Energy Efficiency Services Limited (EESL) has issued a tender for the development of a 50 MWAC grid-connected solar project integrated with a 10 MW/40 MWh Battery Energy Storage System (BESS) at the IB Thermal Power Station in Jharsuguda, Odisha.

The tender requires the BESS to have a 4-hour discharge cycle at full rated load of 10 MW, while also enabling partial load operation for up to 6 to 8 hours at reduced load, subject to dispatch scheduling. Its charging duration is 4 to 5 hours at rated power, which may be extended to 6 to 8 hours depending on solar generation availability and dispatch scheduling. The BESS is designed for one complete charge-discharge cycle per day, corresponding to a 4-hour rated discharge time; under partial load operation, although the charge-discharge duration may be extended, the total daily energy throughput remains within one complete cycle.

The scope of work encompasses full turnkey execution, including design, engineering, supply, transportation, transport insurance, storage, installation, testing, commissioning, comprehensive insurance prior to handover, operation and maintenance, and warranty services for the 50 MWAC grid-connected solar photovoltaic power plant and the integrated BESS. Additionally, it includes the delivery of associated internal collection systems, Supervisory Control and Data Acquisition (SCADA) system, Power Plant Controller (PPC), Energy Management System (EMS), and evacuation interface facilities at the plant boundary for the IB Thermal Power Station in Jharsuguda, Odisha.

Bidders are required to submit electronic bids by June 30, 2026. The tender involves a non-refundable and non-adjustable fee of INR 25,000, along with a bid security of INR 9,05,62,000. Bidders must design the BESS with AC output as the primary consideration, ensuring a minimum discharge duration of 4 hours at rated power and an operational lifespan exceeding 12 years. The project is expected to be completed within 18 months from the issuance of the Notice to Proceed (NTP). Previously, Coal India Limited (CIL) had secured an order from GRIDCO Limited for the construction of a battery energy storage system project in Odisha.

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