Members of the Advisory Group including Reliance Power chief Anil Ambani and ICICI Bank chief Chanda Kochhar met Mr Scindia on Wednesday.
"The private developers and bankers have said that the DBFOT model is financially unbankable and operationally not workable," Ashok Khurana, director general, Association of Power Producers, and a member of the Advisory Group, told PTI.
The government has so far awarded four UMPPs -- Mundra (Gujarat), which is being developed by Tata Power and three others Sasan (Madhya Pradesh), Krishnapatnam (Andhra Pradesh) and Tilaiya (Jharkhand) are being executed by Reliance Power.
The first round of bidding for the Bedabahal UMPP in Odisha took place in August 2011, in which 20 companies qualified. The next round of bidding is awaited.
The Power Ministry also plans to award two more UMPPs -- Cheyyur (Tamil Nadu) and Sarguja (Chhattisgarh) -- as early as possible.
Mr Scindia said: "We are looking at the national tariff policy, issue of hydro electric power, ensuring capacity addition, issue of coal and gas shortages and transmission and the way forward."