Mumbai, Apr 8 () Tata Power stock rose nearly 3 per cent today after its Singapore-based arm TPIPL signed a pact with KS Orka Renewables Pte for sale of its 50 per cent stake in OTP Geothermal Pte (OTP) for USD 30 million (around Rs 200 crore). The stock gained 2.57 per cent to settle at Rs 65.