CFE Electricity in Mexico: How to Read Your Bill & Avoid the Dreaded DAC Trap
Updated: Aug 29
Your CFE bill is either the cheapest utility you've ever had or a monthly ambush, and the difference is a single tariff threshold most expats have never heard of. After seven years of paying CFE in Guanajuato and coaching clients through bill shock in Mérida and the coast, here's how Mexico's electricity system actually works, and how to stay on the right side of the line.
This pairs directly with my utilities guide, which covers CFE alongside internet, water, and gas setup.
How CFE Billing Works
CFE (Comisión Federal de Electricidad) is the national utility, everyone has it, and most homes are billed bimonthly (every two months), which surprises new arrivals who think their first bill covers one month. Residential rates are subsidized and tiered: the first block of kilowatt-hours is very cheap, the next block costs more, and heavy usage costs more still. Your tariff class also depends on your region's summer temperatures, hot-climate zones (Mérida, the coasts) get bigger subsidized allowances precisely because AC is survival equipment there.
The DAC Trap: The Only Rule That Really Matters
DAC. Doméstica de Alto Consumo, is the punitive high-consumption tariff, and it's the entire game. Exceed your zone's average consumption threshold over a rolling 12-month period and CFE reclassifies your whole household into DAC: the subsidy disappears and your rate roughly triples on every kilowatt-hour. A Mérida house that paid $1,200 pesos bimonthly can suddenly pay $4,000+ for identical usage. Getting out requires keeping consumption below the threshold for months, it's slow going in and slow coming out, which is why prevention beats cure.
How to Stay Out of DAC
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You cannot manage what you do not measure. A plug in energy monitor shows what a window unit or space heater draws, which helps you spot what is driving your kWh before the bimonthly bill arrives. Search plug in energy monitors on Amazon.
Know your threshold:it's printed on your bill (límite de alto consumo) and varies by tariff zone. Track your bimonthly kWh against it, that one habit does more than anything else to prevent bill shock.
Mini-splits, not window units:modern inverter mini-split AC units use half the electricity of old window units. If your rental has ancient AC, this is the negotiation to have with your landlord.
Cool rooms, not houses:Mexicans cool the room they're in, and it's the habit worth adopting. Whole-house American-style AC is the express lane to DAC.
Solar changes everything:net-metered rooftop solar has boomed precisely because of DAC, in hot cities, systems often pay for themselves in 3 to 5 years. Renters can't install it, but buyers absolutely should price it in.
Check before you rent or buy:ask to see recent CFE bills for any property in a hot city. A house already in DAC is a monthly tax you're inheriting.
What Real Bills Look Like in 2026
Highland cities (Guanajuato, San Miguel, Querétaro, CDMX):no AC needed, $150 to $450 pesos bimonthly ($10 to $25 USD/month) is normal. My own bill has never scared me once in seven years.
Hot cities, disciplined usage:Mérida or Vallarta with efficient AC used sensibly, $1,000 to $2,500 pesos bimonthly ($30 to $70 USD/month) in the hot season.
Hot cities in DAC:$4,000 to $8,000+ pesos bimonthly. This is the bill that generates the panicked Facebook posts every June.
Practical CFE Life
Pay at OXXO, the CFE app, or by automatic bank charge, but never let a bill lapse, because CFE cuts service fast and reconnection is a hassle. Getting the bill switched into your name matters beyond electricity: a CFE bill is Mexico's gold-standard proof of address for banking and bureaucracy, so negotiate that transfer with your landlord early. And keep every paid receipt for a year; billing disputes are rare but easier to win with paper.
The Bottom Line
Electricity is a rounding error in highland Mexico and a real budget line on the coast, and which one you experience is largely a choice made when you pick your city and your AC habits. If you're weighing a hot-climate city, my Cost of Living Calculator builds DAC-aware estimates, and it's exactly the kind of detail we pressure-test in a Reality Check session before you commit.
Frequently Asked Questions
How often do you get a CFE bill in Mexico?
Most homes are billed bimonthly, every two months, which surprises new arrivals who expect a monthly bill. Your first bill covers two months of use, so divide it by two when you build a monthly budget.
What triggers the DAC tariff at CFE?
Exceeding your zone's average consumption threshold over a rolling 12 month period reclassifies your whole household into DAC and removes the subsidy. Your limit is printed on your bill as the límite de alto consumo, so track your kWh.
How much is a CFE bill in a hot city like Mérida?
Much more than in highland cities, since air conditioning drives it. Efficient units used sensibly keep you out of DAC, while DAC households can see bills several times higher. Check the límite de alto consumo on your bill and track your kWh.
Is rooftop solar worth it in Mexico?
Net metered solar often pays for itself in about 3 to 5 years in hot cities. Renters cannot install it, but buyers should price it in. Get several quotes and confirm current net metering rules with CFE.
What happens if I miss a CFE payment?
CFE cuts service fast and reconnection is a hassle. Pay at OXXO, through the CFE app, or by automatic bank charge, and get the bill switched into your name since it is also a common proof of address.
Essential Resources
📖 Master Guide ($47): see the guides and toolkits
📋 180-Day Action System ($37): see the guides and toolkits
🏨 Booking.com: compare hotel rates on Booking.com
🎟️ Viator tours: check available tours on Viator
📞 Reality Check $149: book a Reality Check
This article may contain affiliate links. If you buy or book through them, MyMexicoMove.com may earn a commission at no extra cost to you. We recommend only services that are relevant to your Mexico move.
Solar: When It Actually Pays
Mexico's net-metering rules and abundant sun make rooftop solar one of the best home investments in the country, especially if you're flirting with DAC or living in an air-conditioned coastal city. Typical residential systems pay for themselves in roughly 3 to 5 years for heavy users, panels are widely installed by local companies in every major city, and once you're generating, the DAC trap simply stops being your problem. Renters can't play this card, but if you buy in a hot climate, price solar into the purchase math from day one.
CFE is one of a dozen systems, water, gas, internet, predial, that all have their own quirks. The utilities chapter of the Master Guide covers them all, and if you're in your first months and drowning in admin, the First 90 Days Concierge means you never face a confusing bill alone.
About Paul Green
Guanajuato resident since 2018. Many expats guided. All guides from firsthand experience.paul@mymexicomove.com
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