Solar Engineering
Solar DC/AC Ratio and Inverter Clipping: India Guide
What DC/AC ratio should an Indian C&I rooftop run? Why 1.1–1.3 wins, what clipping really costs, and how to catch undersized inverters hiding in EPC quotes.
22 Oct 20266 min read
Sun Wave Knowledge Centre
Solar Engineering Articles
Practical solar engineering guidance, analysis and updates for commercial and industrial solar buyers.
Solar Engineering
Solar DC Cable Sizing & Voltage Drop: India Guide (2026)
How to size DC solar cables for Indian C&I rooftops: EN 50618 vs IS cable specs, ampacity derating, voltage drop targets, and sizing formulas explained.
22 Oct 20268 min read
Solar Engineering
Solar Panel Degradation & Repowering in India (Guide)
How fast industrial solar panels degrade in Indian conditions, when to plan repowering, and how to budget for inverter replacement and mid-life health audits.
22 Oct 20268 min read
Solar Engineering
Solar Earthing & Lightning Protection for Plants: India
IS 3043-2018, CEA rules and IS/IEC 62305 applied to industrial solar plants: earth pits, separation distance, SPD selection and mistakes Indian EPCs make.
22 Oct 20268 min read
Solar Engineering
Solar on Tin Shed Metal Roofs: Mounting Guide India
How to mount solar on tin shed and metal roofs in India: seam clamps vs purlin brackets, IS 875 wind uplift checks, load path and galvanic corrosion control.
22 Oct 20267 min read
Solar Engineering
Solar Performance Ratio Benchmarks India: What to Demand
What PR should a North Indian factory demand? Indian C&I rooftop performance ratio benchmarks, why PR alone misleads, and how to write it into the contract.
22 Oct 20266 min read
Solar Engineering
Power Factor Penalty After Solar: Indian Factory Guide
Why rooftop solar can depress your measured power factor, how leading PF from old capacitor banks triggers penalties, and the APFC and inverter fixes that work.
22 Oct 20266 min read
Solar Engineering
TOPCon vs Mono PERC Solar Panels: India 2026 Guide
TOPCon vs Mono PERC in India 2026: efficiency 21-24% vs 19-22%, temperature coefficient, degradation, price premium and which technology to pick for C&I rooftop plants.
1 Sept 20268 min read
Solar Engineering
Perovskite-Silicon Tandem Solar Cells Hit 2026 Records
2026 lab records pushed perovskite-silicon tandem solar cells past 32% certified efficiency. Here's what the research says, and why C&I buyers in India shouldn't wait for it.
24 Aug 20268 min read
Solar Engineering
Transformer Capacity Check for Rooftop Solar (India)
How to check transformer capacity before rooftop solar in India: sizing rules, DISCOM limits, step-by-step feasibility, checklist and worked example.
11 Jul 202612 min read