Choosing a Solar Installer in Chennai: Five Questions That Reveal the Answer

Choosing an installer for solar panel installation in Chennai is harder than choosing any other home contractor. The product is invisible once it is running, the technical language is unfamiliar, and many quotes look similar on paper. Five direct questions cut through most of that.

1. What specific panel make and model are you quoting?

A quote that says '400W panel' is not a specification. The make, model, and datasheet are what you need. Tier-1 panels from manufacturers on Bloomberg NEF's annual list carry bankable performance warranties and have local service offices. Panels without traceable manufacturer information, or which cannot be found on the manufacturer's website, are a risk in a 25-year investment. If the installer cannot name the module clearly, that is an answer too.

2. Who files the TANGEDCO net meter application?

Some installers hand the homeowner a form and a list of documents and consider that done. Others handle the full filing, follow-up with the sub-division, and confirm when the meter is commissioned. For solar panel installation in Chennai, the net meter application is not optional — it is what converts the installation into a bill reduction. Find out who does that work and what their track record is for how long it takes.

3. What does the labour warranty cover and for how long?

Labour warranty is from the installer, not the manufacturer. It covers roof penetrations not leaking, connections not arcing, earthing holding continuity, and DC wiring not degrading in the first years. One year is common; two is better. The specific exclusions matter: some installers exclude work done by other parties after installation, which is fair. Others exclude any item not listed on the BOM, which is a loophole. Get the terms in writing.

4. Can you show me finished work in this neighbourhood?

For solar panel installation in Madipakkam, an installer who has worked locally will have references nearby. A site visit to a finished installation is more useful than any brochure — you can see the cable management, the structure quality, and talk to the homeowner about the follow-up experience. Refusing to provide a reference in a city this size is a warning sign.

5. What is not included in this quote?

A good installer lists exclusions explicitly: earthing electrodes if the building has none, conduit runs longer than a certain distance, structural reinforcement, safety rails, bi-directional meter cost (if TANGEDCO charges it separately), or the cost of a preparatory visit if the terrace needs clearing. A quote with no exclusions is likely hiding them.

What to do with the answers

If a quote cannot answer questions 1 and 2 clearly, eliminate it. If it fails question 3 or 5, you are comparing an incomplete scope with a complete one. For solar panel installation in Chennai, the full quote comparison checklist gives a grid you can use across multiple vendors.