It had quoted Rs 6.5 per unit a month ago.
The British firm, in its pre-feasibility study report submitted to the Investment Board Nepal (IBN), has also proposed price escalation at the rate of three percent annually for nine years.
At present, Nepal Electricity Authority (NEA) has been purchasing electricity from independent power producers at Rs 4.80 per unit in wet months and Rs 8.40 per unit in dry months.
Speaking at the board meeting of IBN held on Sunday, Prime Minister KP Sharma Oli, who also chairs the board of directors of IBN, questioned reliability of the proposal.
The meeting, however, decided to allow the company to prepare Detailed Project Report (DPR) of wind energy project within three months.
IBN officials have doubt over the company's plan to complete DPR in three month as the study has to gauge wind power of at least few years.
The British firm has proposed to generate 300 MW in the first phase and another 3000 MW within three years. Based on its proposal, the cabinet meeting had decided to allow IBN to handle wind power projects above 100 MW.
The meeting also decided to do necessary homework for announcing open bidding in wind power generation.
PM Oli floated the plan of generating 100 MW wind energy and 200 MW solar energy in his program to end load-shedding within a year. Many have criticized his plan, terming it unworkable.
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