New CEA standards land in April 2027. Check your BOM
The CEA notified amended technical standards in July 2026, effective April 2027: 25 year design life, bypass diodes and salt mist testing near the coast.
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Rooftop first, then open access, in that order
C and I buyers are moving on both at once and getting the sequence wrong. Why the roof comes first, what open access is actually for, and how to pitch both.
Sizing a system from the customer's electricity bill
The bill carries six numbers that decide system size, and most site visits read only one. How to size a rooftop system before you have measured the roof.
Societies get Rs 18,000 per kW. Most quotes get it wrong
Group housing societies have their own subsidy rate, their own cap and a DCR condition. The four things that sink a society proposal, and how to price around them.
Your inverter brand may be off the PM Surya Ghar list
MNRE has told inverter makers to host monitoring servers and generation data inside India. Brands that did not confirm cannot be installed under the scheme.
The growth is in Nagpur and Varanasi, not Mumbai
India added 6.6 GW of rooftop solar in the first half of 2026 and the districts leading it are not the metros. What that does to an EPC's sales geography.
What actually goes in a solar proposal
Most rooftop proposals are a price and a picture. The ten things a proposal has to carry to survive comparison, and the one page the customer actually reads.
The collateral free loan most customers never hear about
Residential solar loans up to Rs 2 lakh need no collateral, run ten years and carry a six month repayment holiday. Most EPCs still lead with the system price.
Maharashtra wants a battery on every job above 100 kW
New rooftop solar above 100 kW in Maharashtra must carry storage at half the solar capacity for two hours. How to size it, quote it and explain what it costs.