Chennai solar guides

Sizing & Installation

Panel counts, roof area and land for every system size, plus what happens on install day.

Showing 25–36 of 48 articles in Sizing & Installation

Hand tracing a line across rolled technical drawings on a workshop table beside a pen and scale rule, checking a specification against a quotation

Sizing & InstallationIs Your Solar Quote Too High? Audit It Per WattSeptember 21, 202612 min read

Convert any solar quotation to a rate per watt, compare it to the Tamil Nadu benchmark, and see which reasons for a higher price are legitimate.

White electric hatchback plugged into a wall-mounted home charger in the car porch of a suburban Chennai house, with rooftop solar panels on the terrace above

Sizing & InstallationHome Solar for EV Charging: How Much Do You Actually Need?September 21, 202611 min read

How much rooftop solar an electric car needs, why the timing problem matters more than the sizing, and what a kilometre costs on solar, grid and petrol.

A wall-mounted hybrid solar inverter above a battery unit inside an Indian home, cabling and conduit running between them

Sizing & InstallationSolar vs Diesel Generator: They Do Not Solve the Same ProblemSeptember 21, 20268 min read

Diesel backup runs near ₹30 a unit before maintenance. Solar runs under ₹2. But a grid-tied array gives you no backup at all, which is the part comparisons skip.

Rows of tilted rooftop solar panels on a concrete terrace, each supporting leg standing on its own concrete footing

Sizing & InstallationWill Solar Panels Make My Roof Leak?September 20, 20268 min read

Panels do not leak. Holes do. What causes a leak after installation, how to avoid one on an RCC terrace or a sheet roof, and who pays when it happens.

Wall-mounted solar string inverter on the outside of a Chennai home, conduits and an isolator below it, the display lit and showing generation

Sizing & InstallationSolar Panel Warranty Claim in India: What to Do When the Installer Has GoneSeptember 20, 202611 min read

Three warranties cover a rooftop system and three different parties honour them. Which is which, what to keep, and how to claim when the installer has gone.

Hands resting on a marked-up engineering drawing spread across a desk, rolled drawings and a test report beside it

Sizing & InstallationSolar Panel Theft and Insurance in IndiaSeptember 19, 20268 min read

The warranty does not cover theft, cyclone or fire. What a solar policy costs, what it actually covers, and which sites genuinely need one.

Close view of a tilted rooftop solar array in Chennai, the grid of cells and busbars on each module clearly visible against a bright sky

Sizing & InstallationTOPCon vs Mono PERC: Which Panel Belongs on an Indian Roof?September 19, 202610 min read

TOPCon vs Mono PERC on the four numbers that decide it on a hot Indian roof: temperature coefficient, first-year degradation, year 25 output and warranty.

Indian homeowner comparing three printed solar quotations spread across a dining table with a laptop open beside them

Sizing & InstallationHow to Verify a Solar Company Before You PaySeptember 16, 20268 min read

Learn how to verify a solar company in Tamil Nadu, discover which registrations you can check yourself in minutes, and read the questions that separate EPCs from resellers.

Indian homeowner plugging a charging cable into a white electric car in the driveway of a Tamil Nadu house with rooftop solar panels above, at sunset

Sizing & InstallationSolar Capacity Limit in Tamil Nadu: Sanctioned Load RulesSeptember 15, 20268 min read

Learn what caps your solar capacity in Tamil Nadu, discover why sanctioned load matters more than your past bills, and read how to size for an EV you have not bought yet.

Residents of an Indian apartment association seated around a table in a community hall while a woman stands and presents a solar proposal document

Sizing & InstallationApartment Association Solar Approval: Getting the VoteSeptember 14, 20268 min read

Learn how to get apartment association solar approval, discover the resolution wording and consent rules, and read how to answer the objections that sink proposals.

Indian man studying a printed electricity bill at his kitchen table with a puzzled expression, rooftop solar panels visible through the window behind him

Sizing & InstallationElectricity Bill After Solar Not Zero? Here Is WhySeptember 13, 20269 min read

Learn why your electricity bill after solar is not zero, discover which TANGEDCO charges never disappear, and read what a realistic Tamil Nadu bill looks like.

Indian couple reviewing a solar loan document with a bank officer at a desk, a calculator and a system quotation between them

Sizing & InstallationSolar Loan EMI for a Home in Tamil Nadu (2026 Rates)September 12, 20268 min read

Learn what a solar loan EMI actually costs in Tamil Nadu, compare bank rates from 7 percent, and discover why the monthly saving usually beats the monthly instalment.