SONAI MUTHU
Al Hilli, Alain,AZ
Summary
Electrical Engineering Technician | Aspiring SCADA/Data Engineer | 10+ Years in Renewable Energy
Skilled Electrical Engineering Technician with over 10 years of experience in the solar PV and substation field, including the last 2 years in a technician role, focusing on technical maintenance, equipment testing, LV and HV operations. Previously served as a Site Supervisor, managing installation and O&M of large-scale solar plants and 110kV/33kV to 220kV/33kV substations.
Hands-on expertise in HV equipment handling, , and fault troubleshooting. Strong knowledge of safety standards and operational compliance in high-voltage environments.
Currently enhancing skill set through a Data Analysis & AI course, developing proficiency in Python, SQL, Excel, and Power BI to transition into SCADA or Solar Data Engineer roles. Combines deep field experience with a data-driven mindset to support smarter maintenance, performance analysis, and system optimization.
Overview
11
11
years of professional experience
Work History
Electrical Engineering Technician
SWEIHAN PV POWER PLANT COMPANY
07.2023 - Current
- Oversaw the management of projects from inception to completion at the 1.2 GW Noor Abu Dhabi PV power plant.
- Operated various machinery and tools safely and efficiently.
- Proposed innovative solutions to improve team performance and outcomes.
- Managed team of technicians for routine O&M activities and ensured timely resolution of system faults.
- Conducted daily inspections and performance monitoring of solar inverters, combiner boxes, DC isolators, and grid connections.
- Ensured proper functionality of electrical systems through comprehensive maintenance.
- Adhered to strict safety protocols during all maintenance and repair operations.
- Supervised installation of energy-efficient solutions in residential settings.
- Provided feedback for product improvements based on field experience
Site Supervisor
Sterling And Wilson Solar Energy LCC
10.2018 - 06.2023
- Developed effective work schedules to maximize shift efficiency.
- Oversaw personnel safety and efforts at work site.
- Coordinated operations with management to meet tight deadlines.
- Handled substation (110 KV/33 KV) equipment including CT/PT, VCB, ACB, and power transformers.
- maintained 11kV to 110 kV and 33KV to 220 KV electrical substation equipment, including transformers, circuit breakers, isolators, CTs/VTs, and control panels.
- Conducted routine inspections and preventive maintenance on Low Voltage and High-voltage switchgear, ensuring system reliability and safety compliance.
- Executed shutdown, isolation, and energization procedures under strict safety protocols.
- Diagnosed electrical faults and replaced defective components efficiently to minimize downtime.
- Performed scheduled and emergency maintenance on HV/LV switchgear and protection systems.
- Handled attendance, payroll, and material procurement.
- Maintained logs detailing materials used and equipment performance.
- Implemented safety training to reduce worksite risks.
- IV curve Analyst of modules , string, scb mad monitoring performance
- Managed high-voltage equipment operations at a 40 MW solar power facility.
- Planned and documented maintenance activities for solar power systems.
- Assisted in commissioning and energization of substation equipment under strict safety protocols.
- Oversaw equipment maintenance routines regularly ensuring optimal performance levels across all machinery used onsite.
Technician
Sterling and Wilson Ltd
11.2015 - 10.2018
- Performed installation, testing, and maintenance of electrical equipment at 110kV/33kV substations, including transformers, circuit breakers (VCB, SF6), isolators, and protection relays.
- Collaborated with engineers and supervisors during shutdowns, repairs, and upgrades of substation infrastructure.
- Delivered on-site support for PV system commissioning and issue resolution.
- Diagnosed solar system faults using data analysis and equipment evaluations.
- Conducted inspections and quality control for solar components.
- Scheduled repair and maintenance operations with technical teams.
- Identified equipment hazards and maintained safe operation practices.
- Collaborated across departments to optimize productivity.
- Carried out daily tasks with high accuracy and reliability.
Trainee Engineer
Voltech HR Services Ltd
11.2014 - 10.2015
- Liaised with suppliers and contractors to streamline project activities.
- Inspected completed systems to ensure compliance with specifications.
- Advised clients on product functionality and maintenance.
- Documented testing procedures and results according to company standards.
- Resolved customer concerns and improved service satisfaction.
- Supported project delivery through teamwork and deadline compliance.
- Investigated product issues and recommended corrective measures.
- Collaborated with senior engineers on complex projects.
- Traveled to job sites with senior personnel to aid in inspections and ongoing project observations.
Education
Diploma - Electrical
VSVN polytechnic College
Virudhunagar04.2014
SSLC - undefined
HPSM Hr.sec school
Virudhunagar04.2011
Skills
- Electrical HV and LV Equipment Maintenance
- PV Module, SCB, Inverter & HV Breaker Operation
- PV Iv curve tracer & analysis
- High/Low Voltage Switchgear Operation Substation Equipment: Power Transformer, VCB, SF6 Breaker, RMU
- Preventive Maintenance & Troubleshooting
- Team Leadership & Manpower Handling
- Safety Protocols & PPE Compliance
- Computer Literacy & Data Entry
- Cost management Skill
Languages
Tamil Native Speaker
English Good
Hindi Good
Timeline
Electrical Engineering Technician
SWEIHAN PV POWER PLANT COMPANY
07.2023 - Current
Site Supervisor
Sterling And Wilson Solar Energy LCC
10.2018 - 06.2023
Technician
Sterling and Wilson Ltd
11.2015 - 10.2018
Trainee Engineer
Voltech HR Services Ltd
11.2014 - 10.2015
Diploma - Electrical
VSVN polytechnic College
SSLC - undefined
HPSM Hr.sec school
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