Large-scale solar projects in Tamil Nadu have seen rapid growth in recent years. In the past five years, the cumulative installed capacity witnessed a four-fold increase to 4.4 GW, as of March 2021. Aiding this capacity addition is the State’s reasonably high insolation levels and matching solar potential, estimated at 279GW. The sharp decline in the prices for solar and resulting cost competitiveness is another factor. For instance, auction discovered solar bids reduced significantly, from ₹10.95 in 2010 to ₹1.99 by 2020. Additionally, in response to the ambitious national targets and to spur sector specific development, Tamil Nadu released the Solar Policy of 2019, aiming for 9GW of solar installations by 2023.