Chennai solar guides

Blues Renewables Blog

Practical guides on solar sizing, net metering, the PM Surya Ghar subsidy, finance and open access, from the team that installs across Tamil Nadu.

Showing 1–12 of 83 articles

LatestSizing & InstallationLuminous Solar in 2026: Panels, Inverters, Batteries, Price and WarrantyOctober 4, 202613 min read

What Luminous makes in 2026, its solar panel, inverter and battery prices from its own store, warranty terms, ALMM status, and the customer care contacts.

Sizing & InstallationUTL Solar in 2026: Panels, Inverters, Batteries, Price and WarrantyOctober 3, 202614 min read

Who makes UTL Solar, what its panels, inverters, batteries and ShineX kits cost in 2026, how the warranty reads, ALMM status, and customer care contacts.

Close view of black solar DC cables with MC4 connectors clipped neatly under a rooftop panel row, running into a grey distribution box on a Chennai terrace

Sizing & InstallationRooftop Solar Components: DC Cable, MC4 Connectors, Junction Box, ACDB, DCDB and EarthingOctober 3, 202616 min read

What each rooftop solar wiring part does: solar DC cable sizes, MC4 connectors, junction box, ACDB, DCDB, earthing and lightning arrester, with MNRE specs.

An elevated hot-dip galvanised steel solar structure on a Chennai terrace, with clothes drying in the shade beneath the panels

Sizing & InstallationSolar Panel Mounting Structure: Types, Height and Cost (Tamil Nadu, 2026)October 3, 202614 min read

Solar mounting structure guide for Tamil Nadu: RCC, elevated, ballast and tin shed types, materials, Chennai wind load, tilt, height and cost per kW.

Two solar charge controllers mounted side by side on a plywood board above a tubular battery, with DC cables running in from a small rooftop panel

Sizing & InstallationMPPT vs PWM Solar Charge Controller: Which One, What Size, What PriceOctober 2, 202614 min read

MPPT vs PWM solar charge controllers for Indian battery systems: real efficiency in hot weather, sizing by amps and volts, 12/24/48 V, and 2026 prices.

A slim wall-mounted lithium battery beside a row of tall tubular batteries in a shaded utility room of a Chennai home

Sizing & InstallationSolar Battery Price in India (2026): Lithium vs Tubular, 100 Ah to 200 AhOctober 2, 202615 min read

Solar battery prices for October 2026 from published lists: tubular 100 Ah to 200 Ah, lithium per kWh, backup hours, sizing, and when to skip a battery.

A wall-mounted grid-tie inverter beside an AC distribution box on a shaded Chennai terrace wall, with rooftop panels visible behind it

Sizing & InstallationSolar Inverter Price in India (2026): On-Grid, Hybrid and Off-Grid by kWOctober 2, 202615 min read

Solar inverter prices for 2026 from manufacturer price lists: on-grid, hybrid and off-grid by kW, the MRP trap, warranty, BIS checks and sizing in Tamil Nadu.

Solar panels from several manufacturers standing upright in a row in a sunlit warehouse, a homeowner and an installer comparing two of them

Sizing & InstallationBest Solar Panel Brands in India (2026): Top Manufacturers ComparedOctober 1, 202613 min read

11 solar panel companies in India compared on capacity, own cells, cell type, efficiency, warranty and ALMM status, plus how to pick one for your roof.

A small 50 W solar panel leaning against a full-size 550 W rooftop panel on a sunlit Chennai terrace, showing the difference in size

Sizing & InstallationSolar Panel Price by Wattage in India (2026): 50 W to 600 WOctober 1, 202614 min read

Single solar panel (solar plate) prices in India, Oct 2026: 10 W to 700 W, price per watt, 12 V and flexible panels, and DCR vs non-DCR explained.

A homeowner on a Chennai terrace looking at an empty rooftop corner where solar mounting rails lie unassembled

Sizing & InstallationHow to Cancel a Rooftop Solar Application or Remove Solar in Tamil Nadu (TNEB, 2026)October 1, 202614 min read

How to cancel a solar rooftop application on the national portal or with TNPDCL, change vendor instead, or convert a solar service back to normal service.

Electrical inspector with a clipboard checking a solar inverter and AC distribution box on a factory rooftop in Tamil Nadu

Sizing & InstallationCEIG Approval for Solar in Tamil Nadu: When You Need It, Process and TimelineOctober 1, 202612 min read

When a Tamil Nadu solar plant needs CEIG approval, the 10 kVA rule behind it, the inspection steps, documents, fees, timelines and the usual causes of delay.

Bidirectional electricity meter on the wall of a Chennai house, with rooftop solar panels visible on the terrace above

Sizing & InstallationNet Metering vs Net Feed-in vs Gross Metering in Tamil Nadu, and How to SwitchOctober 1, 202613 min read

Net metering, net feed-in and gross metering in Tamil Nadu compared: who qualifies, how each settles, a worked 3 kW example, and how to switch on USRP.