How to choose a solar installer: a checklist

A good solar installer surveys your site properly, designs the system for your roof and connection, uses approved products, handles the paperwork and supports you after installation. Use this checklist when comparing quotes.

Before the quote

  • Site visit: do they inspect the roof, shading, structure and switchboxard?
  • Load check: do they review your bills and sanctioned load?
  • Clear design: panel count, inverter model, string layout and mounting structure.

In the quote

  • Brand and model of panels, inverter and any battery.
  • ALMM and BIS status where relevant to your project.
  • Earthing, lightning protection, and DC and AC protection (surge protection and isolators).
  • Cable sizes and mounting structure material.
  • Who handles net-metering and other approvals.
  • Timelines and payment stages.

After installation

  • Commissioning report and monitoring setup.
  • Warranty documents and serial numbers.
  • Service contact and response commitments.

Red flags

  • No site visit before quoting.
  • Unnamed or unbranded equipment.
  • Pressure to sign quickly.
  • Generation promises far above what a calculator suggests.

Find an authorised Tenzor partner

Request a quote through the form on the Size your system page and we will connect you with an authorised partner near you.

FAQs

How many quotes should I get?

Comparing two or three detailed quotes is a sensible approach.

Should the installer handle net metering?

Ask. Many installers manage the application with your electricity company as part of the job.

Size your systemEnter your units or your bill in rupees. Get the right Tenzor inverter, panels, roof area and your likely savings.
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Best direction and tilt for rooftop solar panels in India