This answer to the Rajya Sabha by the Minister of State for Personnel, Public Grievances & Pensions has a list of nuclear power reactors in India
The statement adds:
At present, there are eight nuclear power reactors with a total capacity of 6800 MW at various stages of construction. In addition, ten reactors of 700 MW each including Kaiga 5&6 (2X700 MW) at Kaiga in the district of Uttar Kannada in Karnataka are under pre- project activities.