Sun Wave Knowledge Centre
Practical guides guidance, analysis and updates for commercial and industrial solar buyers.
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.
1 kW solar generates about 4.0-4.4 units per day annualized in Delhi-NCR, Haryana, UP and Rajasthan - roughly 1,400-1,600 units/kWp a year with strong seasonality. City norms, seasonal table and PR discipline.
CEA's 2026 BESS safety and construction standards, VGF status, the proposed ALBM battery list, and Rajasthan's behind-the-meter BESS rules — the complete regulatory map for industrial solar-plus-storage.
Open-access and captive power consumers must now meet a Renewable Consumption Obligation — 35.95% in FY2026-27 with a non-fungible distributed RE carve-out. Shortfall reports due 31 December 2026.
NPCL rooftop solar for Greater Noida factories: UPERC net billing (not net metering), 2 MW cap, Solar Injection Compensation, application fees and FY 2026-27 tariffs.
RERC DREGS 2021 net metering/net billing for Rajasthan factories: 1 MW cap, 100% sanctioned load, 80% DT rule, export settlement and the 2025 VNM/GNM amendment.
115BAA keeps the 40% solar accelerated depreciation but drops the 20% additional depreciation. Old regime vs 22% worked example on a ₹1 Cr plant, MAT and 180-day rule.
Delhi C&I rooftop solar: DERC net metering (July 2026 rules), ₹1/kWh GBI for C&I, group/virtual net metering, green open access at 100 kW, and realistic ROI.
Gurugram factory solar: DHBVN HT tariff ₹6.95/kVAh + ₹290/kVA, HERC net metering cap 500 kW, 90% feed-in settlement, ToD rebates and realistic payback for 2026.
Noida factory solar: NPCL HV-2 tariff with the 10% regulatory discount, UPERC net billing (not net metering), 2 MW cap, data-centre demand and payback for 2026.
UPERC RSPV Regulations 2019 (to the 2025 Third Amendment) for Uttar Pradesh factories: why C&I gets net billing, the 2 MW cap, Solar Injection Compensation and FY 2026-27 tariffs.
Green Energy Open Access Rules 2022 explained: 100 kW eligibility, 15-day GOAR approval, banking, CSS and surcharge caps, and both 2023 amendments for C&I buyers.
MERC net-metering rules for Maharashtra factories: 5 MW cap, FY2026-27 grid support charges, HT tariffs, settlement and MSEDCL application.
GERC net-metering rules for Gujarat factories: capacity caps, FY2026-27 HT tariffs, APPC settlement, DISCOM timelines and BESS mandates.
DERC net-metering limits, FY2026-27 industrial tariffs, DISCOM application timelines, settlement rules and capacity caps for Delhi factories.
RERC net-metering limits, FY2026-27 industrial tariffs, DISCOM application timelines, settlement rules and capacity caps for Rajasthan factories.
Haryana's mandatory rooftop solar rule for commercial buildings with 50 kW+ connected load: 3–5% capacity, net metering, compliance steps and exemptions.
UP net-metering limits, FY2026-27 HT industrial tariffs, application timeline, and settlement rules for UP factories under UPERC regulations.
A source-backed solar-plus-BESS business case for Faridabad and Haryana factories: tariffs, ToD limits, demand charges, sizing, safety and payback inputs.
Current DHBVN/HERC net-metering limits, FY 2026-27 HT tariffs, application timeline, settlement rules and BESS status for Haryana factories.
Complete tax guide for industrial solar in India 2026: 40% accelerated depreciation under Section 32, GST input tax credit, MAT, capitalisation rules, and financial planning for factory owners.
Complete guide to solar EPC in Gujarat for industrial buyers. Costs, DISCOM rules, top clusters, and how to choose a Gujarat solar EPC contractor.
Choosing the right solar provider in Maharashtra for industrial buyers. MSEDCL rules, costs in Pune, Aurangabad, Nashik, and Mumbai industrial belts.
Industrial solar EPC in Karnataka — Bengaluru, Mysore, Hubli, Mangalore. BESCOM/Mescom rules, costs, and choosing the best Karnataka solar EPC.
Detailed breakdown of solar EPC costs per MW in India for 2025. Compare CAPEX, equipment, and installation costs for industrial solar projects.
Guide to solar monitoring systems for industrial plants in India. Compare SCADA, IoT, and inverter-native platforms for real-time performance tracking.
Optimal solar panel cleaning schedule for Indian industrial installations. Covers frequency, methods, costs, and how cleaning impacts generation.
Calculate your solar panel ROI and payback period for industrial installations in India. Real numbers, case studies, and savings analysis.
How to choose the best solar EPC company in Haryana for your factory. Compare contractors, costs, and what to look for in industrial solar partners.
Calculate your factory's solar savings with our step-by-step guide. Includes formulas, examples, and state-wise tariff data for accurate projections.
Complete guide to industrial solar installation in Rajasthan. Covers state policy, DISCOM process, costs, and why Rajasthan has the best solar ROI.
Complete guide to solar panel maintenance and O&M for industrial installations in India. Cleaning schedules, monitoring, and cost breakdown.
Complete guide to solar financing options for Indian factories. Compare bank loans, leasing, RESCO, and self-funding for industrial solar projects.
Complete guide to solar panel installation for factories in Faridabad, Gurugram, and Delhi-NCR. Local regulations, costs, and DISCOM process.