The best electricity tariffs in September 2026: which one to choose based on your consumption

When the bill arrives, your tariff will directly determine whether you pay double or half on your next bills, and the vast majority of people only realise this once the charge has hit their bank account. Read on to understand, step by step, the ideal option for your home as you get back to your routine.

Which is the best electricity tariff in September 2026?

The answer is straightforward and very simple: it depends on your consumption profile. It would be a mistake to say there is a single perfect tariff for everyone, as every household operates entirely differently.

For example, if you spend the day away from home for work and do most of your household chores at night or on weekends, your needs will be the complete opposite of someone who works from home and maintains a constant electricity consumption throughout the day.

Therefore, the best electricity tariff isn't the one that advertises the lowest price, but the one that best adapts to your day-to-day life and allows you to organise your monthly budget without any hidden traps.

Which Endesa electricity tariffs can you sign up for this September?

To make it easy for you to compare the options available at a glance, we have put together this table with the most attractive options from our catalogue for September 2026:

*The prices in the table correspond to 27 August 2026.

Which electricity tariff should you choose based on your consumption habits?

To make the right choice, the most practical approach is to analyse how your household runs and which tariff naturally fits your consumption habits.

If you want to pay the same per kWh all day long

If your household doesn't want to constantly watch the clock or organise domestic routines around time bands, stable 24-hour pricing options are your best ally. Under this model, every kilowatt-hour (kWh) you consume costs exactly the same, regardless of whether you put the washing machine on at midday or at eight in the evening.

Both the Conecta Luz Tariff and the Luz 24h Online Tariff guarantee this predictability.

They are perfect for families with continuous and constant consumption throughout the day who prioritise the peace of mind of knowing their bill won't fluctuate due to unforeseen habit changes or wholesale market swings.

If you can adapt your consumption to the cheapest hours

If you are able to organise yourself and shift the use of your most energy-hungry appliances (such as the washing machine, dishwasher, or tumble dryer) to the night-time or weekends, the Conecta 3 Periodos Tariff will be the most cost-effective for you. This tariff divides the day into three bands:

• Off-peak (the cheapest): from midnight to 08:00 Monday to Friday, and 24 hours a day on Saturdays, Sundays, and national bank holidays. This is when the price is lowest.
• Shoulder (intermediate price): from 08:00 to 10:00, from 14:00 to 18:00 and from 22:00 to midnight Monday to Friday.
• Peak (the most expensive): from 10:00 to 14:00 and from 18:00 to 22:00 Monday to Friday.

You can achieve real savings with this tariff if you manage to concentrate at least 35–40% of your total consumption during off-peak hours. If your household meets this requirement, the positive impact on your electricity bill will be highly noticeable.

If you work from home

For people who work from home, stability is essential. Spending so many hours at home means the computer, lighting, heating, or air conditioning are continuously on during the daytime. This daytime consumption coincides directly with the most expensive hours, which can result in a significant extra cost on your bill.

For this reason, the Conecta Luz Tariff is highly recommended for people working from home. By offering a stable price 24 hours a day, it allows you to work with complete peace of mind without worrying about the clock or getting any nasty surprises at the end of the month.

If you have a second home

If you are looking to simplify your life, the partnership between Endesa and Orange offers you the best opportunity. When you sign up for fibre, mobile, and television with Orange through Endesa, you automatically receive a €6/month discount on the electricity or gas bill of your choice, indefinitely and with no exit fees.

Furthermore, if you use the promotional code ENDESAFIBRA26, you get €50 in PARA TI programme points that translate into direct discounts on your energy bills. The available plans adapt to your needs:

• Fibre 300: 300 Mb fibre and a landline for €20/month for the first 12 months (then €30/month).
• Fibre with 1 line: 600 Mb fibre and a 5G+ mobile line with 60 GB of data for €50/month.
• Fibre, mobile and TV: Add television with over 90 channels, SkyShowtime, and an entertainment platform of your choice (Netflix, HBO Max, Prime Video, or Disney) for €65/month.
• All football channels: For sports lovers, the complete package with all football channels and unlimited data is available for €109/month.

If you have gas heating

If you have natural gas heating or hot water from a boiler at home, managing both supplies separately often results in duplicated paperwork and a harder-to-manage budget. Our Luz 24h Online + Gas Tariff allows you to consolidate both contracts in one well-managed place.

With this combined tariff, you enjoy a stable price for both electricity and gas 24 hours a day, protecting you from potential market fluctuations. Plus, if you are a new customer, you get €50 and benefit from a 20% discount during the first year on your electricity consumption and the natural gas unit rate, guaranteeing you direct savings from the very first day.

Getting back into a routine might change which tariff suits you best

September is the real start of the year for our domestic routines. During the summer, energy use tends to be more erratic or even minimal due to holidays or weekend getaways. However, returning to work and school completely redefines the times we turn on appliances, cook, or switch on the heating.

If your schedule is now very rigid and you find yourselves having to bathe the kids, prepare dinners, and use plug-in electric heaters between 18:00 and 22:00 (peak hours), keeping a time-of-use tariff can cause your bill to skyrocket.

In this back-to-routine scenario, opting for a 24-hour stable price tariff will protect you from penalties and give you peace of mind in your day-to-day life.

What should I look out for before signing up for an electricity tariff?

Before taking the plunge and officially changing your tariff, we recommend taking a few minutes to check these five key aspects on your current bill:

• Your actual consumption habits: Don't just get carried away by eye-catching offers. Check how many kWh you actually consume every year, every month, and even at what times of day your demand peaks.
• Contracted power capacity: This represents the fixed charge you pay to be able to connect several appliances at the same time. Many households have more power contracted than they actually need. Bear in mind that reducing your contracted power by just 1 kW represents savings of approximately €50 a year on your bill.
• Exit fees: Make sure you opt for an electricity tariff with no exit fees so you can switch companies if your needs change in the future, without having to pay penalties or cancellation fees.
• Energy charge (€/kWh): This is the cost of the energy you consume and the factor that most dictates your final bill amount. Always look for competitive and transparent prices.
• The small print on discounts: Check whether attractive discounts apply only during the first year or if they are indefinite, and make sure you know what price you will pay once the promotional period ends.

Find the tariff that best suits your consumption

An informed choice is the right choice. That is why it is important to base your decision on real data. You can access our tariff comparison tool via our website.

It is very simple to use and will only take a minute. Our system will analyse your consumption profile and habits to show you clearly and transparently exactly which tariff will save you the most as you get back into a routine.