The Tarapur Atomic Power Station, located in Maharashtra, India, holds the distinction of being the world's oldest nuclear power plant still in operation. Originally commissioned in 1969, the facility has undergone various upgrades and maintenance cycles over its decades of service to remain functional and compliant with safety standards.

According to recent data, the station provides electricity at a rate of approximately Rs 3.31 per unit. This pricing structure positions the plant as one of the most economical sources of electricity currently available in the Indian energy market. While the facility's longevity is a point of technical interest, its primary function remains the consistent supply of base-load power to the regional grid. The station operates under the oversight of the Nuclear Power Corporation of India Limited (NPCIL), which manages the facility's ongoing integration into the national energy infrastructure. Despite its age, the plant continues to contribute significantly to the local and national power supply, balancing the need for affordable energy with the operational requirements of aging nuclear infrastructure.