Location of offices of RIOs and their area of jurisdiction
| SL. No. | Location of Offices | Existing area of jurisdiction | Area of jurisdiction w.e.f. 01.08.2006 |
| 1 | RIO (North)
CEA, Room No. 324,
NRPC Building, 18-A, Shaheed Jit singh Marg, Katwaria Sarai, New Delhi- 110 016 Telefax 011-26510249 |
Delhi, UP, Uttranchal, Bihar, Haryana, Punjab, MP, Rajasthan, Chattishgarh and Chandigarh UT. | Delhi, UP, Uttranchal, Haryana, Punjab, Himachal Pradesh, Rajasthan and Chandigarh UT. |
| 2. | RIO (South) CEA, Block-4, III Floor, Shastri Bhawan Chennai- 600 006 Telefax 044-28257051/ 28276579 |
Tamil Nadu, Kerala, Andhra Pradesh, Orissa, Karnataka (except Distt. Of Uttar Kannada, Belgaum, Dharwad, Mangalore, Bijapur), UTs of Pondicherry, Kairakal, Yanam, Mahe, Andaman and Nicobar and Lakshdweep |
Tamil Nadu, Kerala, Andhra Pradesh, Karanataka, UTs of Pondicherry, Kairakal, Yanam, Mahe, Andaman and Nicobar and Lakshadweep |
| 3. | RIO (West) CEA, Ground Floor, WRPC Building, Plot No. F-3 MIDC Area Marol, Andheri (East), Mumbai- 400093 Telefax 022-28320756 Extn.244 |
Maharastra, Gujarat, Goa, Uttar Karnataka, Belgaum, Dharwad, Mangalore, Bijapur Distict of Karnataka UTs of Daman & Diu and Dadra & Nagar Haveli | Maharastra, Gujarat, Goa, MP, Chattishgarh, UTs of Daman & Diu and Dadra & Nagar Haveli |
| 4. | RIO (North-East) C.E.A. Zorem, Nongrim Hills, Near Mizo Model School, Shillong- 793003 Telefax 0364-2521086 |
Assam, Arunchal Pradesh, Nagaland, Manipur, Meghalaya, Mizoram, Tripura, West Bengal, Sikkim and Jharkhand | Assam, Arunachal Pradesh, Nagaland, Manipur, Meghalaya, Mizoram, Tripura |
| 5. | RIO (East) CEA, ERPC Building, 14 Golf Club Road, Tollygunge, Kolkata- 700033 Telefax 033-24235833 Extn.-105 |
Bihar, Jharkhand, West Bengal, Orissa and Sikkim |