Acharya will be based in the organisation's Seoul headquarters and assume her duties on September 1, 2015, it said in a release.
GGGI is an intergovernmental organisation founded to support and promote green growth.
It partners with countries to help them build economies that are more efficient and sustainable in the use of natural resources, less carbon intensive and more resilient to climate changes.
As Head of the Knowledge Solutions Division, Acharya's primary responsibilities will be to develop the organisation's green investment advisory services, which helps GGGI member countries develop and seek financing for green investment projects, build capacity for green growth implementation and facilitate South-South cooperation.
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Acharya is currently Managing Director at C-Quest Capital LLC, a carbon finance business that uses carbon credits to bring investment capital to social welfare projects in developing countries.
Prior to her work at C-Quest, Acharya held various positions in the field of green investments and finance in organisations including World Business Council for Sustainable Development, the World Bank and ArcelorMittal.
"With her on board, I am confident we will be better able to support our member countries to implement inclusive green growth plans and create an enabling environment for public and private investment in green growth," GGGI's Director-General, Yvo de Boer said.