Karnataka Power Corporation Limited (KPCL), a wholly owned enterprise of the Government of Karnataka, has issued a Request for Proposal (RFP) for the development, operation and maintenance of 1,000 MW (AC) ground-mounted solar photovoltaic (PV) projects integrated with a 2,000 MWh (2-hour) battery energy storage system (BESS) in the state. The tender will be conducted through tariff-based competitive bidding, followed by an e-reverse auction.
The project aims to provide flexible renewable energy to distribution companies (discoms) and help them meet their Renewable Purchase Obligation (RPO) requirements. 
Contract terms
KPCL will sign a Power Purchase Agreement (PPA) with the successful bidder for 25 years. The project will be developed on a Build-Own-Operate (BOO) basis. The bidder will be selected on the lowest tariff discovered in the e-reverse auction, subject to adoption of the tariff by the Karnataka Electricity Regulatory Commission (KERC).
Project parameters
The project will pair 1,000 MW of solar PV with a 2,000 MWh BESS based on Lithium Ferro Phosphate (LFP) lithium-ion technology, with one charge-discharge cycle per day. It will connect to the network of the Karnataka State Transmission Utility (KPTCL). The bidder will be responsible for identifying and acquiring land and for developing the evacuation infrastructure up to the interconnection point.
Each location must have a minimum of 50 MW (AC) of solar PV with a co-located 50 MW/100 MWh BESS, and projects are permitted anywhere in Karnataka. Part commissioning is allowed in multiples of 50 MW (AC) solar and 100 MWh BESS, subject to the terms of the PPA.
Scope of work
The selected bidder will design, build, own, operate and maintain the solar PV plant and the BESS. This includes supply and installation of inverters, module mounting structures, transformers and all associated balance-of-system equipment. The solar modules must be from the Non-DCR (Open Category) and listed on the Approved List of Models and Manufacturers (ALMM) of the Ministry of New and Renewable Energy (MNRE).
For the BESS, the bidder must supply the battery management system (BMS), energy management system (EMS), power conversion system (PCS) and all associated protection and control systems. These must be integrated with the solar plant’s SCADA and the scheduling systems of the state load dispatch centre.
Eligibility
For the solar component, bidders must have a cumulative operational capacity of at least 100 MW, including at least one project of 50 MW or more that has been in commercial operation for at least one year. For the BESS component, they must have developed a cumulative capacity of at least 100 MWh, with at least one project of 30 MWh or more in operation for a year, or have a technology tie-up with an established provider with a global track record of at least 500 MWh.
Financially, the bidder’s average annual turnover over the last three financial years must be at least Rs 2.4 crore per MW of bid capacity for solar PV. The net worth requirement is calculated on the proposed capacity. Bidders must also submit an Earnest Money Deposit (EMD) of Rs 7,00,000 per MW of solar capacity and Rs 4,50,000 per MWh of BESS capacity.
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