Sun Wave Knowledge Centre
Guides, case studies, and industry updates to help you make informed decisions about solar energy for your business.
UPERC repealed its 2022 captive verification rules to align with central Electricity (Amendment) Rules, 2026. Here is what changed for UP captive and group-captive solar.
MNRE's 18 July 2026 OM lets net-metering and open-access solar projects commission with non-ALMM-II cells until 31 December 2026. What C&I buyers must do before the deadline.
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.
Haryana solar open access charges FY 2026-27: wheeling ₹0.73/unit, CSS ₹1.45/unit, additional network cost ₹0.45/unit and the ₹1.37/unit additional surcharge. See real landed cost and why group-captive deals stay exempt.
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.