West Seti Hydro (WSH) was established by SMEC as the operating company for the West Seti Hydropower project.

The proposed shareholders of West Seti Hydro are:

• The Government of Nepal
• China National Machinery & Equipment Import & Export Corporation (CMEC)
• Asian Development Bank
• A special purpose vehicle representing a consortium of Nepali financial institutions which will hold their initial investment through debentures
• IL&FS of India (Infrastructure Leasing and Financial Services)
• SMEC

SMEC commenced its studies into the project in 1994, resulting in Export and Project Agreements  being issued by the Government of Nepal in 1997.  Since that time, SMEC has invested significant resources in project development.

SMEC, the project sponsors of West Seti, have a distinguished record in designing major infrastructure projects in more than 80 countries over the past 40 years. The quality and durability of these projects can be readily demonstrated.

China National Machinery & Equipment Import & Export Corporation is a company owned by the government of the Peoples Republic of China. CMEC will undertake the construction of the West Seti development.

The Asian Development Bank (ADB) joined the West Seti project group in 2006 and will provide both project equity and finance. ADB is a multilateral development financial institution owned by 67 members, 48 from the region and 19 from other parts of the globe.

ADB's vision is a region free of poverty. Its mission is to help its developing member countries reduce poverty and improve the quality of life of their citizens.

ADB's annual lending volume is typically about US$6 billion, with technical assistance usually totaling about US$180 million a year.

Infrastructure Leasing & Financial Services Limited (IL&FS) is one of India's leading infrastructure development and finance companies