Solar Installation in Mexico: Quotes, CFE Interconnection, and Questions to Ask
By the Vallarta Solar Guide editorial team · Published November 1, 2026 · Updated November 1, 2026 · Not technically reviewed yet
Short answer
A grid-tied system must be interconnected with CFE under the current distributed-generation rules, which usually involves an application, a contract and a meter change. Ask your installer exactly which steps they handle, which costs are official versus their own, and get timelines in writing as estimates — not guarantees.
The process in practical terms
- Assessment: bills, roof, shading and electrical panel.
- Proposal and contract: equipment, scope, price, payment schedule.
- Installation of panels, inverter and protections.
- Interconnection request to CFE and contract signature.
- Meter change or reprogramming by CFE, then commissioning.
Comparing quotes like-for-like
| Compare | Why it matters |
|---|---|
| Total system size (kWp) and expected annual kWh | Price per panel means little without production. |
| Panel, inverter and battery models | Lets you check datasheets and warranties. |
| Mounting and roof work | Tile vs slab; waterproofing responsibility. |
| Interconnection paperwork | Included, or extra? |
| Electrical upgrades | Panel, wiring, grounding often excluded. |
| Workmanship warranty and support | Who comes back, how fast, and for how long? |
Official fees vs installer charges
Separate any amount the installer says is an official CFE or government cost from the installer’s own service fees and additional works. Ask for the basis of each charge.
Warranties and after-sales
- Manufacturer warranties are only as useful as the local process to claim them — ask who handles claims in Mexico.
- Get the workmanship warranty in writing, including roof leaks caused by installation.
- Ask whether monitoring is included and who watches it.
Red flags
- Guaranteed savings or a guaranteed “zero bill”.
- No equipment models named in the quote.
- Pressure to pay in full before installation.
- Guaranteed CFE timelines or permit outcomes.
Related questions
How long does interconnection take?
It varies. Treat any timeline as an estimate and ask the installer what happens if CFE takes longer.
Sources
- CNE — Preguntas frecuentes sobre generación distribuida (gob.mx)
- CNE — Guía de preguntas y respuestas (gob.mx)
- Comisión Federal de Electricidad (cfe.mx)
Official sources are listed as references for rules that can change. Always confirm current requirements with the authority directly. Spotted an error? Send a correction.
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