Mirasol · Los Cabos
North American and European homeowners in Los Cabos often approach solar with assumptions built from their home country — California's NEM 3.0, Ontario feed-in tariffs, SREC markets. Some of those assumptions apply here. Most don't. This guide covers the real differences: the CFE rate structure, what changed in 2025, how the isolated BCS grid affects your system, and the questions to ask before signing anything.
Quick view
The honest solar guide for foreign homeowners in Los Cabos — what's different from the US and Canada, the DAC rate, net metering gone, meter risks, vacation home sizing, HOA rules, and what to ask your installer.
A DAC household paying ~6 MXN/kWh at a June exchange rate of around 17–18 MXN/USD is paying roughly $0.30 USD per kWh — comparable to Hawaii or southern California after rate hikes. A home using 1,500 kWh/month faces an electricity bill over $400 USD before the CFE fixed charges.
The subsidy structure is designed for low-consumption households. Once you exceed the threshold, you are priced out of the subsidy entirely. The gap between the subsidized rate (~1–3 MXN/kWh) and the DAC rate (~6 MXN/kWh) is not a penalty — it is the removal of a benefit that was never meant for high-consumption properties.
CFE uses a 12-month rolling average of consumption, not a single month. One bad summer does not immediately push you in; two consecutive summers of heavy A/C use usually do. Once in DAC, you stay in DAC until the rolling average drops below the threshold — which means you need sustained low consumption, not just one cool month.
Under California NEM 2.0, excess solar exported 1:1 against future consumption. Under NEM 3.0, the export rate dropped significantly but credits still accumulate. In Mexico post-2025, there are no rolling credits — exported energy earns a spot price that rarely covers what you paid for the electricity you consumed at night. The savings case now depends almost entirely on what you consume while the sun is up.
The CFE bill
Mexico heavily subsidizes residential electricity below the DAC threshold — rates that look impossibly cheap compared to California or Texas. But once your 12-month rolling average crosses 850 kWh/month for Tarifa 1C in BCS, you are fully in DAC at roughly 6 MXN/kWh (about $0.30 USD) with no subsidy remaining. There is no graduated phase-in — the full jump applies the moment the threshold is crossed. Air conditioning in a Los Cabos summer will get you there fast.
A DAC household paying ~6 MXN/kWh at a June exchange rate of around 17–18 MXN/USD is paying roughly $0.30 USD per kWh — comparable to Hawaii or southern California after rate hikes. A home using 1,500 kWh/month faces an electricity bill over $400 USD before the CFE fixed charges.
The subsidy structure is designed for low-consumption households. Once you exceed the threshold, you are priced out of the subsidy entirely. The gap between the subsidized rate (~1–3 MXN/kWh) and the DAC rate (~6 MXN/kWh) is not a penalty — it is the removal of a benefit that was never meant for high-consumption properties.
CFE uses a 12-month rolling average of consumption, not a single month. One bad summer does not immediately push you in; two consecutive summers of heavy A/C use usually do. Once in DAC, you stay in DAC until the rolling average drops below the threshold — which means you need sustained low consumption, not just one cool month.
Net metering is gone
California reduced its net metering export rate. Mexico replaced the whole scheme. Surplus solar exported to the CFE grid now earns the Local Marginal Price (PML) — roughly 20–40% of retail depending on the hour and region. For a Los Cabos home without battery storage, the right savings model is self-consumption: the percentage of solar energy you consume directly while the sun is producing. That figure is approximately 45% for a typical home without battery, and approximately 85% with battery.
Under California NEM 2.0, excess solar exported 1:1 against future consumption. Under NEM 3.0, the export rate dropped significantly but credits still accumulate. In Mexico post-2025, there are no rolling credits — exported energy earns a spot price that rarely covers what you paid for the electricity you consumed at night. The savings case now depends almost entirely on what you consume while the sun is up.
A correct quote shows you two numbers: the solar production estimate (kWh/year) and the self-consumption ratio (what percentage you actually use directly). Multiply those together and apply the DAC rate — that is your realistic annual savings. Anything that quotes gross production against your full bill without accounting for self-consumption is overstating the savings.
The 2025 change was recent and many local installers have not updated their proposal templates. If a quote tells you that 100% of your production offsets your bill at the retail rate, ask them to show the calculation. A honest installer will explain self-consumption ratios and the PML export credit explicitly.
The meter risk
If solar panels are installed before the CFE interconnection process is completed, a standard bidirectional meter may not be in place. A legacy meter can read solar energy flowing back onto the grid as additional forward consumption — meaning your bill can double or triple during peak production hours. This is not a theoretical risk; it has happened to homeowners in BCS. The fix is either completing the interconnection (slow — 2–6 months in BCS) or configuring the inverter for zero export from day one.
A legacy electromechanical or first-generation digital meter records energy flow in one direction. Solar exports spin it forward instead of backward. CFE bills you for both what you consumed and what you inadvertently sold back at your own expense. The result looks like a massive consumption spike until the meter is replaced or the inverter is reconfigured.
Most modern inverters support zero-export mode: a current transformer clamps onto the utility feed and the inverter dynamically limits output so that generation never exceeds on-site consumption. No energy flows to the grid. No meter problem. No interconnection paperwork required. The tradeoff is that you cannot earn PML credits, but given how low those credits are, most homeowners in BCS prefer zero-export for simplicity and certainty.
Before signing, ask: "Will zero-export mode be configured from day one, and how will you confirm it is working before I'm billed?" If the installer plans to apply for interconnection instead, ask for a realistic timeline and what happens to the meter during the wait. Both approaches are valid — but you need a clear answer before panels go on your roof.
Vacation home sizing
Many Los Cabos homes are occupied for 2–4 months and sit empty the rest of the time. During empty months, solar self-consumption drops close to zero — a refrigerator and security system do not absorb much production. If you size the system for your heaviest-use weeks, you will be over-generating and under-consuming for months at a time. Size for your actual occupancy pattern, not the worst-case summer month.
A good installer will ask how many months the home is occupied, not just what the annual consumption is. A vacation home used primarily in winter needs a different system size than a primary residence. Over-sizing does not help when exports earn PML; it just increases the upfront cost without proportional savings.
A pool pump running on a timer during peak solar hours (10am–3pm) can absorb 1–2 kWh per hour even when no one is home. Ask your installer about configuring your pump timer to match solar production. This is a low-cost way to improve self-consumption ratios without a battery.
A battery shifts solar production to evening hours when you are actually in the home. For a vacation property, a small battery can also act as backup for the refrigerator and security system during the months the home sits empty. The economics depend heavily on your occupancy pattern — run the numbers both ways before deciding.
What to ask
Most solar proposals in Los Cabos are competent. A few are not. These questions separate the two — and give you a baseline for comparing quotes fairly.
Gross production overstates savings in a post-net-metering world. Ask for the self-consumption ratio they are assuming and how they arrived at it.
Get the answer in writing. Either zero-export from day one, or a clear plan for the meter during the weeks or months before interconnection is approved.
Salt air accelerates corrosion on connectors, racking hardware, and inverter enclosures. Ask what corrosion protection is specified for the racking and cable management. Polymer or stainless hardware, IP65+ inverter enclosures, and tin-plated connectors are standard for coastal installs.
Communities like Palmilla, Querencia, and Diamante have architectural review committees. Some require specific panel colors, mounting heights, or prior approval. Confirm before signing — permit delays can hold up an install for months.
A 25-year panel warranty is only as good as the company servicing it in Los Cabos. Ask who does the warranty work — the installer, the manufacturer's local rep, or neither. An installer who will be around in five years is worth a premium over one who might not be.
FAQ
The DAC rate (~6 MXN/kWh, roughly $0.30 USD) applies to homeowners who exceed the high-consumption threshold with no graduated phase-in. Below that threshold, Mexican rates are heavily subsidized and look very cheap. Above it, you pay one of the higher residential rates in North America. Most US and Canadian markets have tiered rates with gradual increases; Mexico has a sharp cliff.
Yes, for most DAC-rate homeowners — because the savings come from avoided consumption at the DAC rate, not from export credits. If you consume 45–85% of your solar production directly (depending on battery), and each avoided kWh saves you ~6 MXN, the math works without any export revenue. The key is getting a quote that uses self-consumption ratios, not gross production.
Yes. Property held in a fideicomiso (bank trust) in the restricted zone can have solar installed. The fideicomiso structure does not change permitting requirements. You will need to present your CFE account number, property proof, and the installer handles CFE paperwork. Consult your notario or fideicomiso trustee if you have questions about permit signatures.
Many gated communities in the Tourist Corridor have architectural review committees that must approve solar installations. Rules vary: some require panels to be flush-mounted and not visible from the street; others require specific colors or prior submission of engineering drawings. Always check with your HOA before contracting an installer — approval timelines can run 2–8 weeks.
Size for your actual occupancy pattern, not peak capacity. A system sized for a fully occupied home will over-generate for most of the year when the house is empty. Consider pairing a smaller system with a pool pump timer to absorb daytime production, and only add battery storage if backup power during unoccupied months is a priority.
Current timelines in BCS range from 2 to 6 months depending on feeder capacity and workload at the local CFE office. Many installers configure zero-export mode on day one to avoid meter issues during the wait, then update the configuration once interconnection is approved. Ask your installer specifically how they handle this period.
Marine-grade refers to corrosion-resistant specifications for racking hardware (typically stainless steel or anodized aluminum), connector housings (tin-plated pins, IP68 rated), inverter enclosures (IP65 or better), and conduit fittings. In a coastal environment with salt air, standard hardware can show visible corrosion within 2–3 years and fail within 5. Marine-grade components add modest cost but extend system life significantly in Los Cabos conditions.
Sources
These sources help explain regional solar and CFE context. A final property quote still depends on the bill, roof, and technical visit.
Next step
With a recent CFE bill we can separate usage, tariff, charges, and solar potential before deciding whether to move forward.