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One Gas: the best gas tariff

On the occasion of Black Friday, we are organising a draw for 15 LG SmartTV 4K OLED 55" TVs.*

*Promotion valid on the occasion of Black Friday for electricity and gas at Endesa Energía S.A. See conditions.

With the One Gas tariff, you can enjoy the best gas tariff, providing you with Endesa's best online price for gas. Discover the cheapest gas tariff, enjoy all the benefits it offers and save on your gas bill.



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Advantages of the One Gas tariff

The best price

one of the most competitive rates in the market.

100% online

You will be able to handle all your administrative tasks by internet in a fast and simple way.

No commitment to remain

Try it, and if it doesn’t suit you, you can change your rate (or provider) without any additional cost.

Digital bill

You will receive all your bills by email as soon as they are emitted. Much faster than the postman.










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Frequently Asked Questions

Prices with taxes (*)

Tariff group Fixed term €/month Variable term €/kWh
RL1 7,441500 €/month 0,071208 €/kWh
RL2 13,431000 €/month 0,067155 €/kWh
RL3 26,015000 €/month 0,062134 €/kWh

(*) Prices include VAT (21%) and do not include Hydrocarbon Tax (gas: 0.00234€/kWh). VAT should be replaced by the corresponding indirect tax, IGIC in the Canary Islands (3%) IPSI in Ceuta and Melilla (1%).

When contracting Endesa's One Gas Tariff, you will benefit from a fixed price for the kWh in your gas bill and be able to make all arrangements online. Enjoy competitive prices at all times, not just during the first year. We offer you Endesa's best online price.

  • One Gas is a 100% online tariff, meaning you can make all arrangements quickly and easily, 24 hours a day, in the "Customer Area" section of the website or by downloading our mobile app.
  • You can arrange just what you need, without being forced to take out an additional maintenance service but with the option to arrange one if you wish.
  • There is no minimum term.
  • You'll receive an email indicating the date and link for accessing your e-invoice when it is available.
  • Arranging the tariff is simple and easy, there are no extra costs and no downtime in your supply.
  • A tariff for ALL customers, old and new.


With this tariff:

  • You will enjoy the best Endesa online prices.
  • Everything can be managed 100% online.
  • There is no minimum term.

The price of my contract, the Tarifa One Gas contract, may be updated on 1 January after contracting it, in accordance with the value of the real CPI (the latest general inter-annual Consumer Price Index officially published at the time of the update), as well as because of variations suffered by the current regulated components that are applicable to gas supplies, and with possible new changes that may be approved by law.

If there are changes in the price of your contract, they will be transferred on to the customer whether they go upward or downward. This type of modification is regulated and completely beyond Endesa’s control, applying equally to the entire country and to all companies.

In addition, the price may be reviewed one year after contracting. This would happen in April or October of each year. If there are any changes, we will let you know a month in advance. Remember that you can terminate the contract, or contract another rate from Endesa or any other company at any time.

With Tarifa One Gas, there is no commitment to stay: you can unsubscribe whenever you want, without any penalty. However, the Tarifa One Gas contract has a duration of one year, renewable automatically.


Terms of business

PDF (0.3MB) Download

One Gas rate conditions

PDF (0.4MB) Download

Conditions digital bill

PDF (0.09MB) Download

Legal terms and conditions for the draw for 15 LG OLED 55" Smart TVs

PDF (0.65MB) Download

*Promotion valid on the occasion of Black Friday for electricity and gas contracts from 22/11/2021 and until 08/12/2021.

By subscribing to this new contract you accept the start of the supply contracted during the cancellation period.

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