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One Gas: the best gas tariff

With One Gas you will have the best online price of Endesa for gas.



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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
3.1P 5,98950 €/month 0,063934 €/kWh
3.2P 10,58750 €/month 0,054556 €/kWh

(*) Includes hydrocarbon tax (gas - 0.00234 euros/kWh) and VAT (21%) has been applied to the resulting amount. The VAT must be replaced by the indirect tax corresponding in the Canary Islands (IGIC) and in Ceuta and Melilla (IPSI).

With the Endesa One Gas tariff you will have a fixed price and you can manage everything you need through the Internet. You will always be able to enjoy a competitive price, and not only during the first year. We offer you Endesa’s best online price.

  • One Gas is a 100% online tariff, so you can handle all your administrative tasks quickly and easily, 24 hours a day, on the “Customer Area” section within the online office or by downloading our mobile application.
  • You can contract only what you need, without the obligation of contracting an additional service but with the possibility of contracting one if you wish.
  • There is no commitment to remain.
  • You will receive an email indicating the date and the link through which you will be able to access your electronic bill when it becomes available.
  • With easy and simple contracting, without costs and without interruptions to your supply.
  • One rate for ALL customers, new and existing ones.


On this rate:

  • You’ll enjoy Endesa’s best online price.
  • You will be able to carry out all your administrative tasks 100% online.
  • You have no commitment to remain.

The Tarifa One Gas is valid for supplies with the 3.1 or 3.2 access rate.

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 (0.21MB) Download

One Gas Tariff

PDF (0.27MB) Download

Conditions digital bill

PDF (0.09MB) Download

Promotion terms and conditions

PDF (0.46MB) Download

*The payment will be included in the gas bill covering 30 June 2021. €15 on the One Gas 3.1 tariff and €35 on the One Gas 3.2 tariff. This promotion is valid for electricity plus gas contracts and gas-only contracts, provided that the user is already an Endesa electricity customer. This promotion is valid until 18 April 2021. For more details, see the promotion terms and conditions.

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

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