Delivering renewable energy infrastructure that enables efficient generation, transmission, and grid integration. Ayyappan & Co supports utility-scale solar projects through pooling substations, evacuation systems, EPC execution, testing & commissioning, and long-term operational support.
Executing high-voltage transmission infrastructure that connects generation assets, substations, industrial facilities, and utility networks. From corridor development and tower erection to conductor stringing and commissioning, we support reliable power delivery at scale.
Delivering EHV substation infrastructure through engineering, civil works, equipment erection, testing, commissioning, and operational readiness. Supporting utility and industrial projects with execution capability across complex power environments.
Infrastructure for a
Sustainable Future.
30+
Years Experience
1500+ KM
Transmission Lines
400kV
Infrastructure Expertise
600+ MW
Solar O&M
300+
Skilled Workforce
IN · KSA
Operational Presence
30+
Years in EHV Infrastructure
Execution-driven
infrastructure expertise.
For over three decades, Ayyappan & Co has engineered and delivered high-voltage power infrastructure across India and Saudi Arabia — from 765kV substations to long-haul transmission corridors and large-scale renewable evacuation systems.
Our work is defined by disciplined execution, regulatory precision and a long-term commitment to the assets we build, operate and maintain.
Integrated Power Infrastructure Services
EHV Substation Engineering & Construction
Engineering, erection, testing, and commissioning of AIS & GIS substations up to 765kV.
Transmission Line Construction
Execution of utility-scale high-voltage transmission corridors across complex infrastructure environments.
Turnkey EPC Solutions
Integrated EPC execution covering engineering, procurement, construction, and operational readiness.
Testing & Commissioning
Relay testing, energisation, validation, and operational readiness support.
Operation & Maintenance
Long-term O&M services ensuring infrastructure reliability and lifecycle performance.
Renewable Energy Infrastructure
Solar pooling substations, renewable evacuation systems, and grid integration support.
Integrated Infrastructure Capabilities
Engineering Coordination
Integrated planning, technical coordination, and execution strategy support.
Procurement & Mobilisation
Structured procurement systems and infrastructure mobilisation capability.
Grid Integration
Utility connectivity and renewable synchronisation expertise.
Compliance & Safety
Integrated quality systems, regulatory compliance, and safety management.
Skilled Workforce
Experienced engineers, supervisors, and infrastructure execution teams.
Lifecycle Infrastructure Support
Long-term operational reliability and maintenance capability.
A disciplined, seven-stage
delivery model.
01
Project Planning
02
Engineering Coordination
03
Procurement & Mobilisation
04
Execution
05
Testing & Commissioning
06
Compliance & Approvals
07
Operation & Maintenance
Infrastructure delivered at national scale.
Raigarh – Pugalur HVDC Corridor
Ultra high-voltage direct current transmission infrastructure supporting long-distance power evacuation.
400kV Quad DC Transmission Line
Virudhunagar 765/400kV Substation
Renewable Pooling Substations
Built for reliability. Engineered for scale.
Proven Infrastructure Expertise
Three decades delivering EHV assets across South Asia and the Middle East.
End-to-End Accountability
Regulatory Compliance
Skilled Workforce
Long-Term Performance Focus
Built for reliability. Engineered for scale.
ISO 9001
Certified
ISO 14001
Certified
ISO 45001
Certified
CEA Approved
Certified
Trusted by utilities, EPC leaders and industrial clients.
