Train movement halted between Andheri and Churchgate railway stations as the power supply stopped, Western Railway's chief public relations officer Sumit Thakur said.
While the industry has been given the highest benefits, farmers will have to contend with 1 per cent reduction in electricity costs.
Eight companies including Reliance Gas Ltd, GAIL Gas and the joint venture of Indian Oil and Adani Energy have bid for the rights to retail CNG in seven cities.
With this contract, Adani Green now has a portfolio of 15 GW of renewable power generating assets.
Reliance Gas, which had successfully bid for three cities -- Rajahmundry in Andhra Pradesh, Shahdol in Madhya Pradesh and Yanam in Pondicherry -- during the second round of bidding for CGD in 2009.