1. Introduction
University courses lay the foundation for understanding energy systems, but the renewable energy industry demands practical, applied knowledge. Photovoltaic (PV) and battery energy storage system (BESS) projects require engineers who can move beyond theory and work confidently with industry tools, standards, and workflows. This guide will help students identify the skills, software, and standards that will make them valuable contributors in real projects, and it will show a step-by-step path to building this expertise.
2. The Role of Standards in PV and BESS Engineering
Compliance with international standards ensures safety, quality, and efficiency. For PV and BESS systems, these key standards can be grouped by discipline:
PV Design Standards:
- IEC 62933 series – Covers electrical energy storage system performance, safety, and environmental requirements.
- IEC 62446 – System documentation, commissioning tests, and inspection procedures for PV arrays.
- IEC 63092 – Design requirements for building-integrated PV (BIPV) systems.
- IEC 62898 – Guidelines for the design of microgrids and distributed generation.
- IEC 62619 – Safety requirements for secondary lithium cells and batteries used in industrial applications.
- IEC 62932 – Requirements for flow battery energy systems.
- IEC 61724 series – Photovoltaic system performance monitoring, measurement, and analysis.
- ISO 5457 / ISO 7200 – Standards for technical drawings, sheet sizes, and title blocks used in engineering documentation.
- ISO 14617 – Graphical symbols for diagrams, useful in creating PV electrical and process schematics.
Equipment Certification Awareness:
Students don’t need to memorize manufacturing standards, but they should know that equipment used in projects must carry relevant certifications such as IEC 61215 / IEC 61730 for PV modules, IEC 61853 for energy rating, IEC 62817 for trackers, IEC 62716 for ammonia corrosion, and IEC 61701 for salt mist resistance. This ensures compliance, durability, and safety without requiring deep familiarity with production-level testing procedures.
Electrical Design Standards:
- IEC 60364 – A very comprehensive low-voltage electrical installation standard covering cable sizing, grounding, protection, wiring systems, earthing arrangements, selection of protective devices, voltage drop limits, and special location requirements. This standard is applied by PV designers in plant electrical design and is central to safe installations.
- IEC 60947 – Low-voltage switchgear and controlgear.
- IEC 61000 series – Electromagnetic compatibility.
- IEC 60228 – Conductors of insulated cables.
- IEC 61439 – Low-voltage switchgear and controlgear assemblies.
- ISO 7200 – Technical product documentation – data fields in title blocks for electrical drawings.
Civil/Structural Design Standards:
- EN 1991 / EN 1993 (Eurocodes) – Structural load considerations (snow, wind) and steel design for mounting structures.
- IEC 61400-2 – Design requirements for wind loads affecting tracker systems.
- EN 1990 – Basis of structural design for safety and serviceability.
- EN 1997 – Geotechnical design principles for foundations and supports.
- ISO 4157 – Building and construction drawings – designation systems for numbering and organizing drawings and documents.
Following these standards means you are not reinventing the wheel but building designs on a recognized, proven foundation.
3. Essential Tools for Modern Engineers
The ability to use the right combination of free and professional tools is what often differentiates a graduate from a hireable engineer.
| Product | Group | Description | Link |
|---|---|---|---|
| PVSyst | PV simulation & yield analysis | Industry standard for PV system simulation, including yield estimation and performance ratio analysis; integrates with TMY data. | https://www.pvsyst.com/ |
| AutoCAD | CAD & drafting | CAD software for producing layouts, single-line diagrams (SLDs), and detailed construction drawings. | https://www.autodesk.com/products/autocad |
| ETAP / DIgSILENT PowerFactory | Electrical network analysis | Tools for load flow, short-circuit, and protection coordination studies in complex grid-connected systems. | https://etap.com / https://www.digsilent.de |
| PV*SOL (Valentin Software) | PV design & shading analysis | Commercial PV design software with advanced 3D modeling, shading analysis, and financial assessment features. | https://valentin-software.com/en/products/pvsol |
| PVcase | PV layout optimization | Utility-scale PV layout optimization plugin for AutoCAD, automating row placement and spacing calculations. | https://pvcase.com/ |
| Manufacturer Tools (e.g., SMA Sunny Design, Huawei NetEco, Fronius Solar.configurator) | Manufacturer-specific system config | Proprietary tools for inverter selection, string sizing, and system configuration tailored to manufacturer products. | https://www.sma.de / https://solar.huawei.com / https://www.fronius.com |
| QGIS | GIS & mapping | Free GIS tool for site analysis, topography, land use, and layout planning. | https://qgis.org/ |
| PV Toolbox | Calculation & learning resources | Calculators, design aids, and training references for PV/BESS engineers. | https://pvtoolbox.eu/ |
| PVGIS | Solar resource data | Free online solar resource and yield estimation platform with historical TMY datasets. | https://re.jrc.ec.europa.eu/pvg_tools/en/ |
| NREL SAM | Energy & financial modeling | Free performance and financial modeling software for renewable energy projects. | https://sam.nrel.gov/ |
| Helioscope | PV layout & performance simulation | Cloud-based PV design software combining layout tools with performance modeling. | https://www.helioscope.com/ |
| HOMER Pro | Hybrid system optimization | Simulation and optimization tool for hybrid power systems (PV, wind, diesel, BESS). | https://www.homerenergy.com/ |
| SketchUp | 3D modeling | 3D modeling tool often used for conceptual design, shading studies, and visualizations of PV systems. | https://www.sketchup.com/ |
4. Step-by-Step Learning Timeline
Here is a fast-track learning program that can be completed in approximately 8–12 weeks to give you the essentials for PV and BESS design. It is focused on building core skills quickly and producing tangible results at each stage.
Step 1 – Learn to Read Equipment Datasheets (3–5 days)
Start with PV modules, inverters, transformers, and BESS components. Focus on maximum power point (MPP), voltage/current limits, temperature coefficients, efficiency, IP ratings, and warranties. Outcome: ability to compare and select equipment based on technical specs.
Step 2 – Understand Mounting Systems (1 week)
Study fixed-tilt, single-axis tracker, and rooftop designs. Learn how wind speed, snow loads, soil type, and budget drive system choice. Outcome: ability to recommend an appropriate mounting type for a given site.
Step 3 – Master Layout Optimization (1–2 weeks)
Use CAD/GIS to position arrays efficiently while avoiding shading and ensuring access. For trackers, understand rotation constraints and row spacing. Outcome: draft a preliminary site layout.
Step 4 – Perform Yield Estimations (4–5 days)
Run PVSyst simulations using TMY data. Assess tilt, azimuth, shading, temperature effects, and losses. Outcome: credible annual yield estimates with clear loss breakdown.
Step 5 – Develop Electrical Design Skills (1–2 weeks)
Learn string sizing across temperature ranges, inverter matching, DC/AC cable sizing (IEC 60364), grounding, and surge protection. Outcome: preliminary SLD and cable schedule.
Step 6 – Create a Basic Design Package (1 week)
Prepare site layouts, SLDs, mounting details, and BOM. Write a technical report covering resource data, equipment choice, yield simulation, and compliance with IEC/Eurocode. Outcome: complete basic design ready for client/internal review.
Step 7 – Advance to Detailed Design (2–4 weeks)
Add civil details (foundations, drainage), detailed electrical protection studies, SCADA/EMS integration, and grid compliance reports. Outcome: full detailed design package suitable for permitting and construction.
5. From Site Data to Design
Every PV/BESS project starts with solid data collection:
- Site boundaries in CAD or GIS.
- Topographic survey with contour lines.
- Geotechnical report for foundation design.
- Shading analysis from drones or LiDAR.
- Grid connection details including voltage, capacity, and interconnection requirements.
This data feeds into preliminary layouts, then electrical and structural design, yield simulation, cost estimation, and finally detailed engineering.
6. Learning and Reference Resources
- Online Courses: Coursera, edX, Solar Energy International.
- Books: Photovoltaic Systems Engineering (Messenger & Ventre), Energy Storage for Power Systems (Ter-Gazarian), Solar Engineering of Thermal Processes (Duffie & Beckman).
- Software: Student versions of AutoCAD, PVSyst, and free QGIS.
- Design Tools: pvtoolbox.eu for calculators and learning materials.
7. Conclusion
To be recognized as a valuable PV/BESS engineer, follow a structured learning path that combines equipment knowledge, mounting and layout design, yield estimation, electrical design, and familiarity with international standards. Use professional tools, reference proven standards, and practice on real or simulated projects. With persistence, you’ll bridge the gap between academic theory and the demands of the renewable energy industry.