Sun Wave Knowledge Centre
Guides, case studies, and industry updates to help you make informed decisions about solar energy for your business.
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.
A fact-checked shortlist of industrial and commercial solar EPC companies working across West Bengal - Kolkata specialists, national players, and how to choose.
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.
Nine states raised grid tariffs for FY27 while 13 froze them and Delhi added 16-18% PPAC. Here is what the Supreme Court's cost-reflective tariff push means for commercial and industrial rooftop solar ROI in Haryana, Rajasthan, UP and Delhi-NCR.
India added a record 3 GW of open-access solar in Q2 2026, taking cumulative capacity to 36 GW with Rajasthan at 25% of quarterly additions. Here is what the Mercom Q2 2026 record means for North-India C&I buyers choosing between rooftop, group-captive and third-party PPA procurement.
DHBVN's August 2026 circular lets rooftop solar applicants under PM Surya Ghar pay net-meter and auto load-enhancement charges in the first electricity bill after commissioning, not at application. What it means for Haryana rooftop solar.
MNRE's 9th ALMM List-II revision (21 Aug 2026) adds 3,709 MW of TopCon/HJT cell capacity, taking enlisted solar cell capacity past 35.47 GW. What it means for C&I rooftop procurement before the 31 Dec 2026 cell-exemption deadline.
MNRE's 21 Aug 2026 advisory grants a 2-4 month force majeure extension for renewable projects with SCSD/SCD on or after 28 Feb 2026, hit by West Asia supply-chain disruptions. Eligibility, penalties waived, and what C&I developers must do.
NTPC's NVVN wants to sell 263 MW of solar power to C&I buyers via open access at ~₹3.00-3.65/unit with ISTS waivers. Deadline 1 Sept 2026 — how it works and who should apply.
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.
RRECL's draft SOP requires 2-hour BESS at 5% of capacity for Rajasthan renewable projects above 5 MW. Here is who it affects and what compliance requires.
India's 2026 inverter shake-up: MNRE's data-localisation mandate, CEA's AI islanding test, SiC/GaN efficiency gains, and the Khavda outage pushing grid-forming inverters into new BESS rules.