Sun Wave Knowledge Centre
Guides, case studies, and industry updates to help you make informed decisions about solar energy for your business.
Mainstream 2026 module efficiency by technology (PERC 21.5-22%, TOPCon 22.5-24%, HJT/IBC 23-24%), NREL records vs products, heat coefficients, bifacial reality, and when premium efficiency pays.
HERC's 26 August 2026 order in Petition 34/2026 lets Haryana open-access applicants file banking applications alongside LTOA instead of after it. What the DISPA vs DHBVNL/UHBVNL ruling changes for industrial solar buyers.
KESCO net metering for Kanpur factories: process, timelines, FY 2026-27 tariffs, caps and settlement rules for industrial rooftop solar. A plant-by-plant guide for Kanpur's industrial belts.
1 MW solar plant cost India 2026: rooftop CAPEX reference of about Rs 2.2 crore ex-GST (Rs 22,000/kW), generation, monthly savings and ~1.4-1.9 year payback.
Battery storage costs in India 2026: ₹1.0-1.3 lakh per kWh installed, LCOS ₹4-7/kWh, record BESS auction tariffs, VGF support and what C&I arbitrage actually pays today.
No central subsidy exists for commercial and industrial solar - PM Surya Ghar is residential-only. What C&I buyers get instead: 40% accelerated depreciation, 5% GST with input credit, state incentives.
MPERC GIRES 2024 rules for MP industry: 500 kW net metering cap, 80% transformer headroom, ToD settlement, Pithampur/Indore green zones, tariffs and the application process.
PSERC rooftop solar rules for Punjab industry: 500 kW net metering cap, 2026 amendments adding GNM/VNM, PSPCL tariff bands, application process and timelines for C&I consumers.
Before rooftop solar: IS 875 load checks, 17-25 kg/m2 array loads, wind uplift as the governing case, structural stability certificate requirements, costs and retrofit economics.
Warehouses can host 500 kW to 5 MW of rooftop solar. Roof area rules, PEB structural loads, costs, payback with accelerated depreciation and green-building credits.
Open access structures compared: third-party sale pays CSS plus additional surcharge, group captive avoids CSS with 26% equity. Landed tariffs, 2026 rule changes and when each structure wins.
A fact-checked shortlist of industrial solar EPC companies serving Haryana - national C&I players, Faridabad specialists, and DHBVN/UHBVN questions to ask.