Allen & Overy (A&O) and Slaughter and May have won the leading roles on the proposed $1.6bn (£961m) sale of two Indian hydro-power plants to a group led by Abu Dhabi National Energy Company (TAQA).

The energy company, which is majority-owned by the Abu Dhabi government, is set to acquire a 51% stake in the Baspa Stage II and Karcham Wangtoo plants in the northern state of Himachal Pradesh from Jaiprakash Power Ventures.

A&O is acting on the consortium's shareholder agreement with a team headed by Abu Dhabi partner Khalid Garousha.

The magic circle firm's former Indian "best friend" Trilegal is also acting for the consortium, fielding a Delhi-based team led by corporate partner Yogesh Singh and energy partner Saurabh Bhasin.

Indian firm Vaish & Associates is acting for the seller with a team led by corporate partner Bomi Daruwala.

Slaughters is representing Canada's public sector pension investment board, which will own 39% of the plants. The firm is advising alongside AZB & Partners' Mumbai partner Ashwin Ramanathan, who is acting as local counsel. 

Amarchand & Mangaldas & Suresh A Shroff & Co corporate partner Ashwath Rau is leading a team advising a fund managed by Indian finance company IDFC's private equity arm, which will own the remaining 10% of the plants.

The transaction would make the buyers one of the largest private operators in India's hydro power sector.

The two plants have a combined power generation capacity of 1,391 megawatts (MW).

A&O and Trilegal called time on their five-year referral agreement in 2012 in light of indications that the Indian legal market was not close to opening up to foreign law firms in the near future.