Why Is Electricity So Expensive in Tulum? (And What's DAC?)

Here's something many foreigners living in Mexico don't realize. The Mexican government helps pay part of the electricity costs for most households. That means the price you pay for electricity is often lower than the full cost of supplying it. Pretty nice, right? But there's a catch. The discount isn't unlimited. And the more electricity you use, the more expensive the extra electricity can become.

Let's make this really simple. Imagine electricity costs:

• Your first 10 units cost $1 peso each.
• Your next 10 units cost $2 pesos each.
• Any extra units cost $4 pesos each.

If you use 30 units, you pay: $10 + $20 + $40 = $70 pesos. You don't pay $4 for all 30 units. Only the last 10 cost $4 each. These are pretend prices to explain how it works, not actual CFE rates.

CFE gives these different price groups names:

Básico: The cheaper electricity. Enjoy it while it lasts.

Intermedio: You've used more electricity, so the next units cost more.

Excedente: Welcome to the expensive electricity.

So even if you don't use that much more electricity, your bill can increase more than you expected. And that's before we get to DAC.

A tariff is simply the set of electricity prices and rules CFE uses for your home. That's it. Nothing mysterious. Mexico has several different residential tariffs because not every part of the country has the same climate. A home in a cooler area might not need much electricity to stay comfortable. A home in Tulum? Well, you know what August feels like. Your air conditioner certainly does. That's why officially classified hotter areas generally get larger allowances of discounted electricity.

You might see Tariff 1, 1A, 1B, 1C, 1D, 1E, or 1F on a CFE bill. You don't get to choose yours. CFE assigns it according to your locality's official climate classification. And just because you live somewhere that feels like the inside of an oven doesn't mean you're automatically assigned the hottest-weather tariff. Look for "Tarifa" on your bill. That's the one that matters for your house.

DAC stands for Doméstica de Alto Consumo. Sounds complicated, doesn't it? It simply means: Your home has been using too much electricity to keep receiving the normal government discount.

Here's how that works. Imagine your home's tariff allows you to use an average of 850 units of electricity each month before you're considered a high-consumption customer.

• Average 600 units a month? You're below the limit.
• Average 800? Getting close.
• Average 900? Uh-oh.

That 850-unit example applies to Tariff 1C. Other tariffs have different limits. But CFE doesn't just look at one month. It looks at how much electricity your home used over the previous 12 months. If your monthly average over those 12 months goes above the limit for your tariff, CFE can move your account to DAC.

And here's the unpleasant surprise. You lose the normal government electricity discount. Your electricity is now charged under a different, high-consumption pricing system. So your home might be using about the same amount of electricity as before, but your bill could suddenly become considerably more expensive. Those three little letters can make a big difference.

Yes! You need to reduce your electricity use enough that your average over the previous 12 months falls below your tariff's limit. Unfortunately, turning off the air conditioner for one afternoon doesn't erase the last year of electricity use. Nice try, though.

Not sure how much electricity is too much? Grab your last six CFE bills. We'll do the math. You can supply the coffee.

You've got similar houses. You both have air conditioning. You both have refrigerators, fans, and the usual collection of appliances. So why is your neighbor paying less? A few possibilities. Maybe they run their AC less. Maybe their appliances use less electricity. Maybe their pool pump runs for fewer hours. Or maybe their home is still receiving the normal government discount, while yours has moved to DAC. Two houses next door to each other can have surprisingly different electricity bills.

Here's something people don't always think to ask. Are you paying for someone else's electricity too? In Tulum, you'll find properties with a main house, casitas, rental apartments, and additional buildings. Sometimes more than one living space is connected to a single electricity meter. That means your meter could be counting electricity used by another household. And guess who might be paying for it? Yep. You.

Maybe the connection was always intended to be shared. Maybe nobody explained it when you rented or purchased the property. Or perhaps there's an unauthorized connection. Either way, it's worth finding out.

And there's a second problem. If the additional electricity pushes your household's consumption high enough, your account could end up on DAC. Now you're paying for someone else's electricity AND potentially losing your normal government discount. Wonderful.

Start by asking your landlord or property owner whether the meter supplies more than one building or residence. If you're unsure, have a qualified electrician identify what the meter is connected to. If you suspect an unauthorized connection or meter problem, contact CFE at 071. Never open, disconnect, or tamper with CFE's meter or its seals yourself.

Before blaming your air conditioner for that outrageous bill, make sure you're not also paying to cool somebody else's living room.

Tulum is hot. Tulum is humid. And your AC is working to deal with both. Even if you haven't changed the temperature setting, your air conditioner might be running longer during hotter weather. A dirty filter or poorly maintained unit can make things worse.

Pool pumps can use a surprising amount of electricity, especially if they're running for long periods. Check how many hours yours runs and whether the equipment is working properly. Don't reduce filtration below what's needed to keep the pool safe and clean.

That old refrigerator might still be running perfectly well. But that doesn't mean it's running efficiently. A worn door seal, dirty condenser coils, or constantly opening the door can increase electricity use.

Guests, renters, family visits, extra laundry, and additional air conditioning all add up. A full house generally uses more electricity than an empty one.

Some CFE residential tariffs have different electricity allowances during the official summer and non-summer periods. That can affect how much electricity falls into the cheaper pricing groups. And no, CFE doesn't decide that summer begins just because you're sweating in March.

Sometimes the explanation is surprisingly boring. One bill covers more days than the last. More days can mean more electricity used. Compare the billing dates before assuming something is wrong.

You don't need to live in the dark or give up air conditioning completely. Start with the simple things:

• Clean your AC filters regularly and service your units when needed.
• Keep doors and windows closed while the AC is running.
• Use curtains or shade to reduce direct heat from the sun.
• Turn off unnecessary lights, fans, and appliances.
• Check whether your pool pump is running longer than needed.
• Repair faulty appliances and electrical problems.
• Keep an eye on your electricity consumption, not just the peso amount.
• Have a qualified electrician investigate unexplained electricity use.

The goal isn't to make your home uncomfortable. It's to stop using electricity you're not actually getting any benefit from.

If your bill suddenly becomes much more expensive, ask yourself: Did I actually use more electricity? Did my account change to DAC? Is something running longer than before? Could another household be connected to my meter? Was there a meter-reading correction or a longer billing period?

Sometimes it's the air conditioner. Sometimes it's your tariff. And sometimes it's something you never realized was connected to your meter.