Khandu said he would hold talks with Union Power Minister Piyush Goyal and his Assam counterpart Sarbananda Sonowal for an early solution.
He gave this assurance to a group of NHPC officials after inspecting the dam, an official release said.
Work on Lower Subansiri project has been stalled since December 2011 because of protests by anti-dam groups from Assam who apprehended that the people residing in the downstream of the project will be in grave danger in there is any breach in the dam.
Had the dam been commissioned on time, the state could have reaped the benefits in terms of employment, contractual works and tourism promotion, he said.
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Executive Director of Subansiri HEP project, Rakesh said the project's initial cost estimate at Rs 6285 crore when construction began in 2005. However, due to the delay, the revised cost estimate has jumped to Rs 17,435 crore now.
Till date, the project has incurred Rs 9000 crore as expenditure, added the official.