Transmission & Distribution

Engineering resilient, future-ready power networks

Transmission and Distribution (T&D) networks are the backbone of reliable power supply and a critical enabler of the global energy transition, supporting large-scale renewable integration, industrial electrification and growing urban demand. Tata Consulting Engineers delivers end-to-end engineering for T&D networks and substations, combining rigorous systems engineering with strong standards compliance and advanced digital tools. With a proven track record of engineering 12,000+ km of transmission lines and 250+ substations, we drive excellence across the full project lifecycle, from feasibility and grid-level planning to detailed engineering, procurement support and commissioning. Our capabilities span EHV AC networks, UHVDC systems, AIS/GIS and HVDC substations, digital substation engineering and grid-level Battery Energy Storage Systems (BESS), helping clients build resilient, efficient and future-ready grids.

Our T&D Expertise

Complete lifecycle support from concept to commissioning
Project feasibility studies and Detailed Project Reports (DPRs)
Multidisciplinary engineering across electrical, civil and mechanical disciplines
Basic, FEED and detailed engineering for transmission lines and substations
Pre-bid engineering support and bid-stage technical clarifications
Technical due diligence and technology selection studies
Detailed engineering and procurement support, including vendor document review
Owner’s engineering services and inspection at manufacturer’s facilities
Grid-level planning, power evacuation and grid integration studies
Power system studies and protection coordination for industrial plants and power plants (thermal, hydro and renewable)

Digital substation engineering and IEC 61850-based automation
Integration of Battery Energy Storage Systems (BESS) with transmission and distribution networks
Smart metering and IoT-enabled grid monitoring solutions
Advanced Distribution Management Systems (ADMS) and grid analytics
System digital twins for performance optimisation and lifecycle management
Data-driven insights to enhance asset performance, reliability and grid resilience

Expertise in FACTS technologies including STATCOM, FSC and TCSC
HVDC and UHVDC system engineering for long-distance and bulk power transfer
Renewable energy integration for hybrid and large utility-scale projects
Grid compliance studies for solar, wind and hybrid power plants
Advanced studies for stability, power quality, harmonics and reactive power management

Smart grid and SCADA-based network monitoring and control
Grid resiliency and reliability enhancement solutions
Grid-level energy storage integration for flexibility and renewable balancing
Sustainable, efficient and upgrade-ready infrastructure aligned with evolving grid codes and future energy pathways

Transmission & Distribution

Segments We Serve

High-capacity AC and DC transmission corridors engineered for bulk power transfer, evacuation and long-distance delivery.

Route survey and walk-over/detailed surveys:

Soil investigation and geotechnical studies
Line route finalisation, chainage and reduced levels for line route
Preliminary angle point location and tower spotting
Tower selection criteria and tower design review (as per EN, ASCE and BIS standards)
Conductor sizing, line profiling and modelling (including PLS-CADD)
Foundation engineering for towers and poles, including site support
Technical specifications and design deliverables for transmission line works
Transmission lines up to 765 kV AC and UHVDC systems up to 800 kV

Robust and scalable AIS, GIS and HVDC substations, including modernisation and digitalisation for higher reliability.

AIS and GIS substations up to 765 kV:

HVDC converter stations and associated AC systems
Digital substation engineering and IEC 61850-based automation
Greenfield and brownfield substation upgrades
Basic, FEED and detailed engineering (electrical, civil and mechanical for substations)
Detailed engineering and procurement support, including vendor document review

Grid-level planning, studies and protection coordination to ensure stable, compliant and optimised network performance

Project feasibility studies and detailed project reports:

Power system studies and protection coordination for industrial plants (chemicals, fertilisers, iron & steel, cement, aluminium smelters, copper, oil & gas) and power plants (thermal, hydro, renewable)
Grid-level planning, power evacuation and grid integration studies
Studies for distribution utilities
Technical due diligence and technology selection studies
Owner’s engineering services

Grid-scale energy storage engineered to enhance grid flexibility, reliability and renewable integration.

BESS technology evaluation and selection (Li-ion and emerging chemistries):

Application assessment for grid support, peak shaving, renewable firming and ancillary services
Optimal BESS sizing and capacity determination
Grid integration studies including load flow, stability and protection coordination
Electrical design of balance of system (BoS) and auxiliary systems
Control architecture, EMS integration and protection design
Layout engineering for containerised and building-based BESS configurations
Interface engineering with substations, SCADA and grid systems

Our Projects

400 kV Double Circuit Transmission Line

220 kV Double Circuit Tower Reorientation

2 × 800 MW Load Flow and Grid Integration Study

Arc Flash Safety Study for 2.2 MTPA Refinery

Plant Power Infrastructure Feasibility Studies

2 × 28 MW Power Plant System Studies

Synchronous Condenser Assessment for 3 Thermal Plants

85 MW Load Integration Studies

Power System Stability Studies

600 MW CCGT Grid Integration Studies

1,000 MW OCGT Power System Analysis

2,300 MW IPP Power System Analysis

Electrical System Studies for Train 3 Expansion

2 × 150 MW Solar Grid Integration Studies

534 MW Solar Grid Compliance Studies

220/132 kV GIS Substation Structural Consultancy

150 km, 400 kV HTLS Lines and 3 GIS Substations Review Engineering

400 kV Shunt Reactor and Protection Studies

385 MW Plant Expansion Power System Study

500 MW Grid Interconnection Study

220 kV Double Circuit Compact Tower Design

Islanding and Relay Coordination Studies

30 MW Battery Energy Storage System

Kishtwar GIS Substation

230 kV, 50 km Submarine Cable System

132/33/11 kV Substation for Derbendikhan Hydropower Project

110/22 kV Mankhurd Substation

220 kV Bhira–Dharavi Transmission Line

Vientiane Plain Rural Electrification Project

Provincial Grid Integration Project

Augmentation of 66 kV Transmission Line and Lobeysa Substation

Rural Electrification Programme Study and Master Planning

Kathmandu Valley High Voltage Reinforcement Project

Wardha Reactive Power Compensation and Harmonic Filtering System

Upgradation of Transmission and Distribution System for Load Growth

Energy Efficiency Feasibility Studies

Electricity Rehabilitation Programme

25 kV AC Traction Substations

South Mumbai Ring System

Anpara–Unnao Transmission Line

View all projects

CASE STUDIES

Dynamic Line Rating (DLR) Solution for Smarter, Sustainable Transmission Systems

The Dynamic Line Rating (DLR) solution developed by TCE introduces a data-driven approach to grid operation. The system continuously measures line and weather parameters such as conductor temperature, current flow, wind speed, solar radiation, and ambient temperature through a network of advanced sensors.

DESIGN TO DELIVERY

Engineering Excellence In Every Experience