GANDHINAGAR, India, Jan 10 (Reuters) - Tata Group is close to announcing a new semiconductor fabrication plant in India's Gujarat state, Tata Sons chairman Natarajan Chandrasekaran on Wednesday said at an investment summit.

Chandrasekaran also said Tata will begin construction of a 20 gigawatts battery storage factory in Gujarat in the next couple of months. (Reporting by Aditya Kalra, Dhwani Pandya and Aditi Shah; Writing by Bansari Mayur Kamdar; Editing by YP Rajesh)