India has many solar panel manufacturers, from large national brands to smaller regional players. Comparing them can be confusing. Use this framework instead of relying only on advertisements.
1. Government approval
For most projects, especially subsidy-based ones, check that:
- The model is on the ALMM list
- Panels are DCR compliant if required for your scheme
2. Manufacturing capability
Larger, established manufacturers often have:
- Automated production lines
- Strong quality control
- Consistent product performance
- Financial stability to honour long warranties
Ask how long the company has been manufacturing panels.
3. Technology
- Mono PERC, TOPCon or other technologies
- Half-cut cells and multi-busbar designs
- Bifacial or monofacial
Newer technologies often offer better efficiency and temperature performance.
4. Key specifications
- Wattage and efficiency
- Temperature coefficient of power
- Degradation rates in the warranty
- Mechanical strength (wind and snow load ratings)
- Junction box and connector quality
5. Warranty terms
- Product warranty years
- Performance warranty (percentage after 25 or 30 years)
- Claim process and service support in India
A warranty is only as good as the company behind it.
6. Certifications
Look for compliance with relevant IEC and BIS standards. Your installer should be able to share certificates.
7. Field reputation
Ask installers which brands they trust and why. Experienced installers see real-world performance and warranty experiences.
8. Price per watt
After checking quality, compare the cost per watt. Small price differences are worth paying for better reliability and warranty support.
Avoid these mistakes
- Choosing only on lowest price
- Ignoring DCR requirements for subsidy
- Not checking actual model numbers on delivered panels
- Assuming all panels with the same wattage perform the same
The bottom line
Choose a reliable, approved brand with good warranty support and a solid track record. The cheapest panel isn't always the best value over 25 years.
We work with trusted, approved panel brands and explain the pros and cons of each option.
