Execution-Driven
Infrastructure
Expertise.
EST.
1992
400 kV
Voltage Class
EPC
Single-Point
O&M
Lifecycle Support
Building Critical
Infrastructure With Discipline and Precision.
Ayyappan & Co is a power infrastructure execution company specializing in EHV substations, transmission lines, EPC services, testing & commissioning, civil infrastructure works, and renewable energy integration.
Founded by S. Ayyappan, the company has built a strong reputation for executing technically demanding infrastructure projects with consistency, accountability, and engineering discipline.
Our strength lies in combining field expertise, structured project management, regulatory coordination, and execution precision to deliver infrastructure systems that perform reliably over the long term.
Today, Ayyappan & Co supports utility, industrial, and renewable energy sectors across India and international markets.
A disciplined, seven-stage
delivery model.
30+
Years of Experience
1500+ KM
Transmission Lines Executed
400 kV
Infrastructure Expertise
600+ MW
Solar O&M Assets
300+
Skilled Workforce
2
Countries of Operation
“Infrastructure projects demand precision, accountability, and dependable execution.
Over the years, Ayyappan & Co has built its reputation by consistently delivering projects through disciplined planning, engineering coordination, safety focus, and operational reliability.
As the energy sector evolves toward renewable integration and advanced grid infrastructure, the company continues to strengthen its capabilities while maintaining the execution standards clients depend on.
Mariappan Ayyappan
Chief Executive Officer
Structured Execution
Across Every Stage
Project Planning
Scope definition, scheduling, and resource modelling.
Engineering Coordination
Design alignment with utilities and consultants.
Procurement & Mobilisation
Vendor management and site readiness.
Infrastructure Execution
EHV, civil, and electromechanical works.
Testing & Commissioning
Pre-commissioning checks and energisation.
Compliance & Approvals
Utility, regulatory, and statutory sign-offs.
Operation & Maintenance
Long-term performance and reliability support.
Principles That Drive
Every Project.
Reliability
Delivering infrastructure systems that perform consistently under demanding operational environments.
Execution Discipline
Maintaining structured planning, coordination, and project execution across every stage.
Safety & Compliance
Following strict quality standards, safety procedures, and regulatory requirements.
Long-Term Partnerships
Building trusted client relationships through dependable execution and performance consistency.
Supporting critical
infrastructure
across multiple sectors.
Power Utilities
↗
Renewable Energy Projects
↗
Industrial Power Systems
↗
Transmission Infrastructure
↗
Government Infrastructure Projects
↗
Independent Power Producers
↗
Operational Presence Across India and Saudi Arabia
With operations across India and Saudi Arabia, Ayyappan & Co continues to support expanding infrastructure requirements through disciplined execution, technical expertise, and long-term operational reliability.
The company is equipped to manage complex infrastructure projects while maintaining execution consistency, safety standards, and regulatory compliance.
India
Chennai · Tamil Nadu
Saudi Arabia
Riyadh · KSA
— Why Ayyappan & Co
Built for reliability. Engineered for scale.
Safety and quality are integrated into every stage of our infrastructure execution process.
Our teams follow structured safety procedures, stage-wise inspections, regulatory standards, and continuous supervision practices to ensure reliable project delivery under demanding operational environments.
ISO 9001:2015
Quality Management
ISO 14001:2015
Environmental Management
TNEB
Class I Contractor
PWD
Class A & B Contractor