Chennai Power Cut On December 17: 5-Hour TANGEDCO Outage; Check Full List of Affected Areas

Residents across several areas of Chennai are advised to prepare for a five-hour power outage scheduled for December 17, 2025. The electricity suspension is being implemented by the Tamil Nadu Generation and Distribution Corporation (TANGEDCO) to facilitate essential maintenance work, including quarterly maintenance of substations, clearing of vegetation, and replacement of old cables and poles.

Chennai Power Cut On December 17 | Photo Credit: https://www.tnpdcl.org/

The shutdown is planned to occur from 9:00 AM to 2:00 PM. Power supply will be restored immediately upon completion of the maintenance work, provided weather conditions allow for timely operations.

Affected Areas List (December 17)

The following zones and specific localities will experience the temporary power suspension. Residents in these areas are advised to make necessary arrangements, such as charging electronic devices and storing water.

Zone	Affected Areas	Key Streets/Localities
Ambattur	Ambattur OT, Padi Kuppam	Menambedu, T.G. Anna Nagar, Venkatapuram Main Road, Kallikuppam, Padi Kuppam Road, Ambattur Industrial Estate Road (partially).
Tambaram	Tambaram East, Selaiyur	Perumbakkam Main Road, Madambakkam, Selaiyur, Velachery Road (part), Mappedu, Vengaivasal.
Adyar	Mylapore, R.A. Puram	Greenways Road, Mandaveli Street, Bheemana Garden, Luz Avenue, Abiramapuram 1st to 3rd Street, and surrounding areas.
Perambur	Kolathur, Peravallur	Jawahar Nagar, Retteri, Peravallur Main Road, G.K.M. Colony (part), Kolathur Road, Vetri Nagar.
Guindy	Ashok Nagar, K.K. Nagar	1st to 12th Sector K.K. Nagar, M.G.R. Road, 100 Feet Road (part), Jafferkhanpet, Alandur Road.
Sholinganallur	Medavakkam, OMR (Part)	Medavakkam Main Road, Sholinganallur Junction, Navalur Road, Semmancheri, and connected streets.

Note: This list is illustrative based on typical maintenance schedules. Residents are advised to check local TANGEDCO announcements for the most precise details.

TANGEDCO's Maintenance Rationale

TANGEDCO conducts these periodic shutdowns to ensure the long-term reliability and safety of the power grid. Key maintenance activities include:

Substation Maintenance: Quarterly servicing of transformers and electrical equipment to prevent overheating and failure.
Line Clearance: Trimming tree branches and vegetation that encroach upon power lines, which can cause short circuits and fires.
Component Replacement: Upgrading outdated switches, insulators, and cables to improve efficiency and reduce unexpected breakdowns.

The corporation regrets the inconvenience caused and has requested the cooperation of the residents during this essential work.

Affected Areas List (December 17)

TANGEDCO's Maintenance Rationale

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