ONGC is investing $5.07 billion for developing Cluster-II discoveries in KG-D5 block to flow natural gas from from June 2019 and oil by March 2020.
The company has recently invested Rs 300 crore to enhance the solar PV cell making capability to 225MW.
Marking its foray into wind power generation, state-owned NTPC has partnered with Inox Wind for a 50-MW wind project to be deployed in Gujarat.
RIL and its partners BP Plc of the UK and Canada's Niko Resources had on November 11 brought an arbitration notice against the government, disputing the $1.55 billion demand.
The IEA said last year that the world's top coal consumer, China, could be facing peak coal demand for the first time due to measures to cap coal use to tackle air pollution and curb excess supply.
Maintaining a stable outlook for the exploration and production companies for next year, the report said this segment should fare better going forward.
The three firms signed the pact for the 60-million tonne a year refinery in Maharashtra with IOC as leader of the consortium, officials said.
Rosneft and its partners had in October signed an all-cash deal to acquire Essar Oil at an enterprise value of about $13 billion.
India is the world's fourth-biggest importer of liquefied natural gas (LNG) - behind Japan, South Korea and China.
RasGas supplies 8.5 million tonnes per annum of LNG to India on long-term contracts
On the back of lower crude prices, Finance Minister Arun Jaitley had slashed petroleum subsidies in 2015-16 by 50 per cent to Rs 30,000 crore.
Tata Power shares were up 2.73% higher at Rs 75.25 apiece on the BSE, whose benchmark Sensex index was up 80.5 points, or 0.31%.
Cairn India has been operating for more than 20 years playing an active role in developing India's oil and gas resources.
The expansion is subject to availability of land adjacent to the company's existing refinery.
The board of power giant NTPC has approved an investment of Rs 323.35 crore in the PSU's first wind power project of 50 MW at Rojmal in Gujarat.
The transaction, would see Rosneft and its partners taking over India's second biggest private oil firm Essar Oil in an all-cash deal valued at about $13 billion.
Moody's has upgraded the outlook for India's power sector to stable from negative in view of surge in domestic coal production and likely improvement in discoms' financial health due to UDAY scheme.