Preethiviraj Murugesan
Solar Design & Electrical Engineer | Commercial & Utility-scale Solar PV
I specialise in feasibility studies and detailed electrical design for commercial rooftop and utility-scale PV systems. At Cotswold Energy Group, I support NHS and education projects through PV design, cable calculations, inverter troubleshooting, as-built documentation and commissioning.
I started out as a mechanical engineer on fabrication shops and industrial sites in India and Kuwait. An MSc in renewable energy at Coventry University brought me to the UK and into solar PV, where I’ve since worked on everything from commercial rooftops to 50 MW ground-mounted sites.
Along the way I kept noticing the same thing: engineers spend a lot of their week on steps a computer could do. So I started writing the tools myself. Excel models became Python applications, AutoLISP routines became a full AutoCAD plugin, and that plugin became PVDesigner.
Today I work as an electrical engineer on PV systems and build engineering software alongside it. The two make each other better: real projects tell me what to build, and building tools makes me a more careful designer.
Feasibility, layout, yield and electrical design on rooftop and utility-scale PV.
Stringing, cable sizing, voltage drop, single-line diagrams and acceptance testing.
C#, Python and AutoLISP tools that remove repetitive design work.
Explore my roles across solar PV engineering, utility-scale project design and earlier mechanical engineering experience.
CURRENT ROLE · COTSWOLD ENERGY
My current work concentrates on feasibility and detailed design, resolving inverter and electrical installation issues, cable calculations, as-built design updates and commissioning assistance.
SELECTED ENGINEERING EXPERIENCE
Engineering responsibilities and project work across utility-scale and commercial solar PV. Examples are drawn from my professional CV; client-sensitive details are intentionally omitted.
Worked on design and construction documentation for ground-mounted PV schemes, including layouts, yield simulations and electrical coordination. Previous work has covered projects from 500 kW to 50 MW.
Produced solar PV feasibility and design outputs aligned with site demand, electrical infrastructure and commercial constraints, from early sizing through system design.
Supported PV electrical design packages and early-stage battery storage integration, with emphasis on safe, workable configurations and clear engineering deliverables.
Previous solar design experience includes performance ratio assessment, yield validation and monitored production data analysis.
Recruiting for a particular role? Pick it and I’ll highlight the skills and evidence that matter.
ADDITIONAL TECHNICAL PROJECTS
A small selection of practical tools for PV and BESS studies. My day-to-day engineering experience remains the main focus of this portfolio.
Independent AutoCAD-based PV design development, covering rooftop layouts, module placement, stringing, cable routing and engineering workflows.
PVDesigner documentation ↗
Interactive feasibility and energy-flow studies, AC/DC-coupled battery modelling, export limitations, tariff analysis, battery dispatch and financial scenarios.
Some Streamlit demos may require waking or signing in on Streamlit Community Cloud. Results are for engineering exploration, not certified design submissions.
I’m interested in solar PV design, electrical design, renewable energy and engineering automation roles in the UK.