Why Did My Electricity Bill Go Up This Summer? Causes and What You Can Do

Have you received your latest electricity bill and found it to be much higher than usual? You’re not alone. During the summer, it’s common for some households to see a significant increase in their electricity bill, and although we tend to immediately assume that the price of electricity has gone up, in many cases the explanation lies in consumption.

Using the air conditioner for longer hours, having more people in the home, swimming pools, vacation homes, or simply higher temperatures can cause us to use much more electricity without fully realizing it.

For certain customers, there’s another factor to consider: the type of electricity rate plan you’ve signed up for. If you have an indexed rate plan, the price you pay for electricity is tied to market fluctuations and can change from one hour to the next. That’s why, before assuming there’s an error on your bill, it’s a good idea to check two things: how many kWh you’ve used and what rate plan you’re on.

 

The first thing you should look at is the kWh

 

When we receive a high bill, our attention usually goes straight to the final amount. But comparing only the euro amount can lead us to the wrong conclusions. The first thing you should check is your electricity usage expressed in kWh and compare it to previous periods. You can ask yourself three simple questions:

• Did I use more than last month?
• How much did I use during the same period last year?
• Has anything changed at home that could explain this increase?

If you normally use 300 kWh and, during a particularly hot period, your usage jumps to 600 kWh, the increase in your bill will have a clear explanation—even if the price of electricity hasn’t changed significantly.

In some of the cases we’re reviewing at Evergreen Eléctrica, consumption in certain households has doubled or even tripled compared to previous months. That’s why checking your kWh usage is always the best place to start.

 

Why We Use More Electricity in the Summer

 

Summer significantly changes the energy profile of many homes. The most obvious example is air conditioning. The more hours it runs and the greater the difference between the outdoor temperature and the temperature we want to maintain indoors, the more electricity the system requires.

In addition, there are other sources of consumption that may go unnoticed. Pool pumps and filtration systems can run for several hours a day. Refrigerators and freezers also have to work under more demanding environmental conditions. If there are more people at home during the holidays, there’s increased use of showers, washing machines, dishwashers, the stove, and other connected devices.

In a second home, the difference can be even more pronounced. A home that remains virtually empty for the rest of the year may suddenly see heavy energy consumption for several weeks.

Individually, each of these factors may seem minor. Together, they can completely change a home’s monthly energy consumption.

 

Air Conditioning: One of the Key Areas to Check

 

During the hottest months, air conditioning can become one of the biggest sources of electricity consumption in your home. That doesn’t mean you have to give up air conditioning, but it’s a good idea to use it efficiently.

Setting the thermostat too low doesn’t make your home reach a comfortable temperature any faster—and it can actually increase energy consumption. It’s also important to keep doors and windows closed while the unit is running and to clean the filters according to the manufacturer’s instructions.

Your home’s insulation also plays a role. Blinds, awnings, and other sunshades can reduce heat gain during peak sunlight hours and lower the energy required to cool your home. And there’s another important factor: the unit itself. An old or inefficient unit may consume significantly more electricity than a modern, properly sized system.

 

Do you have an indexed rate? The price of electricity can also have an impact

 

If, after reviewing your usage, you find that it hasn’t increased significantly, the next step is to check what type of electricity rate plan you have.

This is especially important for customers with an indexed rate plan. With this type of contract, the cost of energy is tied to fluctuations in the electricity market. Therefore, you don’t necessarily pay the same price per kWh throughout the day or every month.

When market prices fall, you can benefit from that reduction. But the opposite is also true: when the market becomes more expensive, the cost of the energy you consume may rise.

During the summer, various factors can converge to put upward pressure on prices, such as increased electricity demand due to high temperatures. This can be compounded by international circumstances that affect energy markets.

Furthermore, in 2026, the international energy landscape has experienced periods of heightened uncertainty related to tensions in the Middle East. Such situations can lead to volatility in commodity and energy markets, though this does not mean that any increase in a bill can be directly attributed to an international conflict. That is why it is important to analyze each case individually.

 

Indexed Rate or Fixed Rate: Which Is Better?

 

There is no single rate that is automatically better for all households. On the one hand, the indexed rate allows consumers to be more exposed to actual market trends. It can be advantageous when prices are favorable and also for those who are able to adjust part of their consumption. In exchange, it means accepting greater variability.

On the other hand, a fixed rate offers greater predictability regarding the price of energy under the conditions and for the period specified in the contract. This can be appealing to those who prefer stability and don’t want to have to keep track of market fluctuations.

The decision should depend on factors such as your consumption, your daily routines, and your tolerance for price fluctuations—not solely on which rate was the cheapest during a specific month.

 

How to Find Out What’s Driving Up Your Bill

 

If you want to really understand what’s happened, you can follow a very simple process. Compare your usage. Check the kWh on your current bill and compare them to similar periods.

• Check the billing dates. Two bills with different billing periods aren’t always directly comparable.
• Review your rate plan. Check whether you have a fixed rate, a rate plan with different periods, or an indexed contract.
• Think about what’s changed at home. Air conditioning, a pool, guests, working from home, an electric vehicle, or more people living in the home can explain significant differences.
• Compare the price of electricity. Note whether your usage has remained relatively stable or not over the past few months.

This process helps distinguish between two situations that are often confused: paying more because you’ve used more, and paying more because each kWh has become more expensive.

 

What You Can Do to Keep Your Next Bill Under Control

 

Once you’ve identified the source of the increase, it’s much easier to take action. If the problem is mainly related to consumption, start with the appliances that run the longest. Air conditioning, pool filtration systems, and other major energy consumers typically offer more room for optimization than small devices.

You can also use your meter readings to better understand when you use electricity and detect changes in your usage patterns.

If you have an index-linked rate plan, pay attention to when you use certain appliances—especially if your contract and habits allow you to take advantage of more favorable prices. Washing machines, dishwashers, electric vehicles, and pool systems are some examples of energy-consuming devices that may be easier to reschedule.

And if you’d rather not keep track of market trends, now might be a good time to consider whether a more stable rate plan better suits your needs.

 

A higher bill doesn’t necessarily mean there’s a mistake

 

It’s completely understandable to be concerned when you receive a bill that’s much higher than expected. However, a higher bill doesn’t automatically mean there’s a problem with the billing.

Before filing a complaint or switching plans, it’s a good idea to understand what happened. In many cases, the reason is simply higher usage during the hottest months. In other cases, it may be a combination of higher usage and higher prices. And for certain customers with indexed rates, market trends can also play a significant role.

The key is to analyze the entire bill and not just focus on the final amount.

 

Conclusion: Before worrying about the price, check how much you’ve used

 

If your electricity bill has gone up this summer, start by comparing your kWh usage with that of previous months and with the same period last year.

A significant increase in usage usually accounts for much of the difference, especially in households with air conditioning, a pool, or more people living in the home. If your usage has barely changed, then it’s worth reviewing the price you’re paying for energy and the details of your rate plan.

Still not sure why your bill has gone up? At Evergreen Eléctrica, we can review your usage and rate plan with you to help you figure out what’s going on. Our goal is to help you find an energy solution that fits your needs. Contact our team, and we’ll review your situation.