|Founded||04 July 2001|
|Headquarters||NDPL House, Kingsway Camp, New Delhi, India|
|Ganesh Srinivasan |
|Owners||Tata Power (51%) |
Government of Delhi (49%)
Tata Power Delhi Distribution Limited (TPDDL), formerly North Delhi Power Limited (NDPL), is a joint venture between the Government of the NCT of Delhi and Tata Power Company Limited, which holds a 51% majority stake in the venture.
It started operations on 1 July 2002 and currently serves 7 million people in the North and North-west parts of Delhi. It has a registered consumer base of 1.60 million. The company's operations span an area of 510 sq. km. with a recorded peak load of around 2074 MW. It is the only distribution utility to receive the ISO 9001, ISO 14001 and OHSAS 18001 certification, and the only Indian utility to have SA8000 certification.
The company's distribution automation project is based on systems such as GIS (Geographical Information System), ADMS (Advanced Distribution Management System) and OT's (Operation Technologies).
The ADMS controlled and unmanned grid stations, GSM based Street Lighting System, SMS based Fault Management System and Automatic Meter Reading employed by the company are all firsts in the capital city area. Modern technologies such as High Voltage Distribution (HVDS) System and LT Arial Bunch Conductor are also being used by them to curb power theft in the region. Tata Power Delhi Distribution Ltd is the first Indian utility to develop and set up Geographical Information System which has seamless integration with SCADA, SAP-ISU and Fixed Asset register. This system has unique mechanism of asset management, complaint management, network planning, etc.
Tata Power Delhi Distribution Ltd. is documented as the first in the country to initiate an Automated Metering Infrastructure based Auto Demand Response programme to help manage grid stress and peak demand. This is part of the company's Smart Grid Journey
Tata Power Delhi Distribution Limited was initially known as the North Northwest Delhi Distribution Company and subsequently renamed North Delhi Power Limited. In 2011, nine years after it first started operations, its name was changed once again to Tata Power Delhi Distribution Limited 
In June 2002, the distribution network of the erstwhile Delhi Vidyut Board was privatised as per the provisions of the Delhi Electricity Reform Act, 2000 and the Delhi Electricity Reform (Transfer Scheme) Rules, 2001. The Delhi Vidyut Board was unbundled and split into six entities managed by BSES Limited (now Reliance Infrastructure) and Tata Power. These six companies were BSES Rajdhani Power Limited, BSES Yamuna Power Limited, Delhi Transco Limited, Indraprastha Power Generation Company Limited, Delhi Power Company Limited, and North Delhi Power Limited (known today as Tata Power Delhi Distribution Limited).
Under the agreement, Tata Power gained a 51% stake in the North and Northwest Delhi firm with a payment of Rs. 187 crores. It also agreed to reduce the Aggregate Technical and Commercial (AT&C) losses of the firm by 17% in the next five years 
On 1 July 2002, Tata Power Delhi Distribution Limited began its operations as the North Northwest Delhi Distribution Company 
After it began its operations in 2002, Tata Power Delhi Distribution Limited was faced with four key problems:
|Total Dividend||Tata Power||Delhi Government|
(Equity + Preference) in Rs.
Table 1: Break-up of dividend payment to Tata Power Delhi Distribution Stakeholders
In 2003, Tata Power Delhi Distribution Limited made its first ten-year technology roadmap. Different technologies such as SCADA, GIS, Distribution Management System (DMS), Distribution Automation (DA) and SAP components including Outage Management System (OMS) were implemented in the following years 
By 2008, TPDDL had achieved 100% consumer indexing using GIS in its area of business, the first step towards implementing its smart grid project. The second phase of the smart grid project was launched in October, 2013 
In 2014, the company became the first Indian power utility to launch an Automated Demand Response (ADR) Project with smart meters in the capital. This Rs. 12.5 crore pilot project  was implemented in partnership with IBM, Honeywell, Landis+Gyr and with the participation of select Industrial and Commercial Consumers of Tata Power Delhi Distribution. It is one of the first projects in the world where ADR and AMI (Advanced Metering Infrastructure for Smart Meters) were conceptualised together. The project was rolled out with approval from the Delhi Electricity Regulatory Commission (DERC)
Apart from ADR infrastructure, the projects components include Smart Meters, Radio Frequency (RF) Mesh Based Communication, Meter Data Management System (MDMS) and integration with other previously existing operational technology and IT systems like OMS and SAP. It covers over 100 km2. of Industrial & Commercial Belt in North and North-West Delhi and will help to analyse consumption patterns and optimise equipment performance. Up to 250 consumers are participating in the project, leading to a collective shed potential of 20 MW. Future plans include extending the project to include 800 additional consumers which would lead to a shed potential of another 20 MW 
Tata Power Delhi Distribution Limited was hailed for its initiatives in smart grid technologies at the International Conference & Exhibition on Smart Grids and Smart Cities organised by India Smart Grid Forum 2015 (ISGF) in March, 2015 
TPDDL launches GPS and RFID technology for quick resolution of faults 
Tata Power-DDL has organised a Capacity Building and Training Programme on the best practices in power distribution for employees of Kano Electricity Distribution Company (KEDCO) and Kaduna Electric Plc.
Tata Power Delhi Distribution Limited provides consultancy services in the power sector to companies in the country and abroad. The company offers project management, technical advisory, IT enablement and managed services amongst a host of other services.
The company has provided consultancy services to various companies in India, Bhutan, Mauritius, Nigeria, Uganda and Yemen. Recently, the company has also entered into providing System Integrator services for IT and OT Implementation.
Case study by Stanford University on Delhi Power reforms.