Hydro Electric Projects in Tamil Nadu
| # | Name | District | Basin | River |
|---|---|---|---|---|
| 1 | Bhavani Kattalai Barrage - I Hydroelectric | Cauvery | Cauvery | |
| 2 | Bhavani Kattalai Barrage - II Hydroelectric | Erode | Cauvery | Cauvery |
| 3 | Bhavani Kattalai Barrage - III Hydroelectric | Cauvery | Cauvery | |
| 4 | Kadamparai Hydroelectric Project | Coimbatore | West flowing rivers from Tadri to Kanyakumari | Kadampari |
| 5 | Kodayar Hydroelectric Project | Kanyakumari | West flowing rivers from Tadri to Kanyakumari | Kodayar |
| 6 | Kundah Hydroelectric Project | Nilgiri | Cauvery, West flowing rivers from Tadri to Kanyakumari | Bhavani |
| 7 | Lower Bhavani Hydroelectric Project | Cauvery | Bhavani | |
| 8 | Lower Mettur Barrage - I Hydroelectric Project | Cauvery | Cauvery | |
| 9 | Lower Mettur Barrage - II Hydroelectric Project | Cauvery | Cauvery | |
| 10 | Lower Mettur Barrage - III Hydroelectric Project | Cauvery | Cauvery | |
| 11 | Lower Mettur Barrage - IV Hydroelectric Project | Cauvery | Cauvery | |
| 12 | Mettur Hydroelectric Project | Erode | Cauvery | Cauvery |
| 13 | Papanasam Hydroelectric Project | Tirunelveli | East flowing rivers between Pennar and Kanyakumari | Thambraparani/ Servalar |
| 14 | Parambikulam Aliyar Hydroelectric Project | Coimbatore | West flowing rivers from Tadri to Kanyakumari | Periyar/Sholayar/Parambikulam/Peruvaripalam |
| 15 | Periyar Hydroelectric Project | Theni | West flowing rivers from Tadri to Kanyakumari, East flowing rivers between Pennar and Kanyakumari | Periyar |
| 16 | Pykara Moyar Hydroelectric Project | Nilgiris | Cauvery | Pykara and Mukurthy |
| 17 | Sathanur Hydroelectric Project | East flowing rivers between Pennar and Kanyakumari | Kallar | |
| 18 | Servalar Hydroelectric Project | Tirunelveli | East flowing rivers between Pennar and Kanyakumari | Servalar |
| 19 | Suruliyar Hydroelectric Project | Theni | East flowing rivers between Pennar and Kanyakumari | Suruliyar |
| 20 | Vaigai Hydroelectric Project | madurai | East flowing rivers between Pennar and Kanyakumari | Vaigai |
