How to check solar panel quality?

What is solar panel efficiency?

Higher efficiency (above 18%) means better energy conversion.

Why are certifications important?

Look for IEC, BIS, or MNRE certifications for reliability.

How to check build quality?

Inspect for cracks, uniformity, and strong framing.

What is the panel’s warranty period?

A good panel offers 10–25 years of performance warranty.

How to test performance?

Use a multimeter to check voltage and current output.