Overview
TANGEDCO operates one of the largest electricity distribution networks in India, serving 288.09 lakh consumers across Tamil Nadu (as of 31.03.2018). The distribution network has grown exponentially since the formation of TNEB in 1957, reflecting the state's rapid electrification and industrial development.
Growth Since 1957
| Parameter | 1957 | As on 31.03.2018 | Growth Factor |
|---|---|---|---|
| Number of Consumers | 4.30 Lakh | 288.09 Lakh | 67x |
| Distribution Transformers | 3,773 | 2,93,301 | 78x |
| LT Line Length | 13,055 km | 6.28 Lakh km | 48x |
| Peak Demand | 172 MW | 15,440 MW | 90x |
| Per Capita Consumption | 21 Units | 1,389 Units | 66x |
Consumer Categories
TANGEDCO serves consumers across multiple tariff categories:
- Domestic — Residential consumers including hut services and BPL connections
- Commercial — Shops, offices, and commercial establishments
- Industrial — LT and HT industrial consumers, including small, medium, and large industries
- Agricultural — Irrigation pumpsets with free/subsidised supply
- Public Lighting — Street lighting and public utility lighting
- Government — Government offices, hospitals, and educational institutions
Distribution Infrastructure
| Infrastructure | Quantity |
|---|---|
| Sub-Stations (33/11 kV) | 1,949+ |
| Distribution Transformers | 2,93,301 |
| HT Line Length (33 kV & 11 kV) | 1.64 Lakh km |
| LT Line Length | 6.28 Lakh km |
| Service Connections | 288.09 Lakh |
Rural Electrification — DDUGJY
Under the Deen Dayal Upadhyaya Gram Jyoti Yojana (DDUGJY), TANGEDCO has been working towards 100% rural household electrification. Tamil Nadu was the first state in India to achieve 100% village electrification in 1992. The DDUGJY scheme further ensures that every household, including Below Poverty Line (BPL) families, receives an electricity connection.
- Free service connections to BPL households
- Strengthening of rural distribution infrastructure
- Installation of additional distribution transformers in rural areas
- Extension of LT lines to unserved habitations
R-APDRP (Restructured Accelerated Power Development and Reforms Programme)
Under the R-APDRP scheme, TANGEDCO has implemented IT-enabled systems for distribution management including:
- Part A — IT infrastructure: GIS mapping, consumer indexing, SCADA/DMS, meter data acquisition, energy auditing
- Part B — Network strengthening: upgrading sub-stations, replacing old conductors, installing capacitor banks, improving power quality
Distribution Circles
TANGEDCO's distribution operations are organized into multiple circles, each headed by a Superintending Engineer (SE), covering all districts of Tamil Nadu:
Major Distribution Circles
- Chennai North & South
- Kanchipuram
- Coimbatore
- Erode
- Madurai
- Tirunelveli
More Circles
- Tiruchirappalli
- Vellore
- Villupuram
- Thanjavur
- Thiruvannamalai
- Karur