Mexico’s growing solar market attracted many serious vendors but also improvised ones. These are the 5 most common mistakes we see in competitor quotes that can cost you dearly.
Mistake #1: Sizing with winter consumption
The fatal error. In Mexicali or SLRC, January-March consumption is 20-30% of July-August. If you size on average or winter, your system falls short when you need it most.
Solution: ask for 12 consecutive bills and size with the highest bimester (typically July-August).
Mistake #2: Trust Tier 2/3 brands for price
Saving $10,000-$15,000 today by choosing “EnergyX” or “SunChina” panels can cost $80,000+ in 10 years when the Chinese company disappears and panels fail without warranty.
Solution: insist on Tier 1 (JA Solar, Trina, Canadian, LONGi, Risen, Jinko). Demand the exact model datasheet, not just the logo.
Mistake #3: Not checking CFE paperwork inclusion
Many sellers quote only equipment and installation. CFE paperwork (DG-01) gets charged separately later, $8,000-$15,000 extra. Unpleasant surprise.
Solution: written quote must say “includes DG interconnection contract with CFE, technical memo and plans”. Without this, it’s not a complete proposal.
Conclusion
Buying solar panels is a 25-year decision. Take an extra week to validate, don’t rush. A serious quote takes 3-5 days to prepare, not 1 hour. Request professional quote with I-Vert Energy.
