Tamil Nadu Approves 600 MW Solar With 1,800 MWh Storage
TNERC cleared a 25-year buy of 600 MW of solar plus a 300 MW, 1,800 MWh battery from SECI at Rs 3.12 per kWh, Mercom India reported. No cell supplier or data-centre buyer is named.
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Tamil Nadu cleared a 600 MW solar buy with storage. Figures are from the story's sources, drawn because no official photo was wide enough.
Illustration (AI-generated)
The Tamil Nadu Electricity Regulatory Commission has approved a proposal from Tamil Nadu Power Distribution Corporation to buy 600 MW of solar paired with a 300 MW, 1,800 MWh storage system from the Solar Energy Corporation of India, Mercom India reported on Oct. 26.
Power ratings in the TNERC approval, megawatts. Energy is stated separately as 1,800 MWh
Illustration (AI-generated)
The purchase runs for 25 years. Mercom said the tariff is Rs 3.12 per kWh, about $0.033. The visible report names the buyer, the seller and the size. It does not name a battery maker, a cell chemistry, a site, or a commercial operation date.
What 1,800 MWh changes on the state system
The approval is a utility procurement, not a power contract for a named data centre. The solar figure is 600 MW. The storage is stated two ways, and they are not the same unit: 300 MW of discharge power and 1,800 MWh of energy. Mercom did not convert that pair into hours, and this story does not either. For a state utility adding solar, the energy capacity is what determines how far midday generation can be moved into the evening. The power rating is what determines how fast that energy can be delivered. SECI, the central solar agency, is the counterparty on the buy. No hyperscaler is named.
What is not confirmed yet
The Mercom brief does not quote a TNERC order number, a delivery year, or a comparison between Rs 3.12 and Tamil Nadu's other solar tariffs. It also does not say whether the storage is co-located with the solar or sited elsewhere on the TNPDCL network. A separate project in the same state is a factory, not this contract. Voltgrid reported that VSL PowerHive, a Vikram Solar subsidiary, plans a 7.5 GWh-a-year battery assembly plant at Oragadam, announced Oct. 16, with commercial operation aimed at April 2027. That plant does not supply the SECI purchase TNERC just approved.
