The renewable energy unit of Tata Power Co Ltd (<a href="https://www.bseindia.com/stock-share-price/tata-power-coltd/tatapower/500400/" target="_blank">BOM:500400</a>) has been contracted to build an 18.75-MW captive solar farm under an INR-1.05-billion (USD 12.6m/EUR 11.8m) power delivery agreement (PDA).