| Authorities of NDMC | DESIGNATION | Address | Phone Number | Extn. | Email Id | JURISDICTION |
| Appellate Authority | Director (Commercial) | Room No. 1518, 15th Floor, Palika Kendra, Sansad Marg, New Delhi-110001 | 23367671 41501353-60 | 3624 | director.coml@ndmcmail.gov.in | All Commercial Department |
| PIO | Executive Engineer (Commercial) | Room No. 101, 1st Floor, S.B.S. Place, Gole Market, New Delhi-110001 | 23341606,23365198 | 323 | | All matters relating to Billing, Meter Reading, Meter Installation, Connection & Disconnection. |
| APIO | Asstt. Executive Engineer (Commercial) | Room No. 104, 1st Floor, S.B.S. Place, Gole Market, New Delhi-110001 | 23365198, 23348964 | 136 | | All matters relating to Elect. Enforcement & Commercial Department. |