The Calcutta Electric Supply Corporation (CESC) has issued a tender inviting bids for the development of 600 MW of interstate transmission system (ISTS)-connected wind-solar hybrid projects, which will be implemented under a build-own-operate (BOO) model.
According to the tender guidelines, the selected developers will be responsible for the entire lifecycle of project establishment. This includes setting up the wind–solar hybrid power facilities, creating the necessary transmission infrastructure up to the designated interconnection point, and securing suitable land for the project. Developers will also be tasked with the installation, operation, and ongoing maintenance of the projects, in addition to obtaining all statutory and regulatory approvals required for project execution.
The power generated from these hybrid projects will assist CESC in meeting its renewable energy purchase obligations (RPOs) and broader clean energy consumption goals. To facilitate long-term supply stability, CESC will sign a 25-year power purchase agreement (PPA) with the winning bidders.
As per the financial requirements outlined in the tender, bidders must submit an earnest money deposit (EMD) of Rs 2 million per MW for each project. Additionally, the successful bidders will need to provide a performance bank guarantee (PBG) of Rs 2.3 million per MW for the solar component and Rs 3.2 million per MW for the wind component of the hybrid projects.
The final date for submitting bids is January 19, 2026, giving developers ample time to prepare detailed proposals that meet the technical, financial, and operational benchmarks set by CESC.
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