How to Switch Gas Supplier in Spain

Switching gas supplier may seem complicated, but with the right information, it becomes a simple process.

In fact, according to data from the CNMC Household Panel, only 8.1% of natural gas users who changed supplier considered the process difficult.

In this guide, we explain how to switch gas supplier efficiently, what to consider when choosing a new supplier and answer some frequently asked questions about the process.

How to switch gas supplier

If, after assessing your energy needs, consumption habits and current gas tariff, you realise that your current plan no longer suits you, it may be time to look for a new gas supplier that offers better services at a better price.

If you are also considering switching electricity supplier, you can find useful information about that process too.

You can change gas supplier as many times as you consider necessary, provided that you are the contract holder. You only need to follow a few simple steps and gather the necessary documentation to ensure the process runs smoothly.

Below, we explain each step.

Evaluate your current contract

Review the conditions you currently have and calculate your current bill to check whether you can improve it by switching supplier.

Pay close attention to whether your contract has a minimum term or lock-in period and, if so, what penalty would apply if you switch before it ends.

Choose your new gas supplier

The first thing you need to do is decide which new supplier you want to contract and review the conditions and services they offer.

Look for personalised energy tariffs and companies that provide good assistance services.

Contact the new supplier

Once you have chosen your new company, contact them to start the switching process.

Most gas suppliers offer online services or telephone support to make this procedure easier. The new supplier will be responsible for carrying out the switch to the tariff you have chosen.

With Repsol, you can find the best solution for you and switch by calling 900 118 866 or completing the process 100% online.

Gather the necessary documentation

Your new supplier will ask you for a series of details and documents in order to process the switch.

Make sure you have a gas bill to hand, as it contains most of the information needed:

Full name of the contract holder.
Contract holder’s DNI.
CUPS code, or Universal Supply Point Code.
Address of the property where the gas supply is located.
Current gas tariff.
Bank details for direct debit payments.
In some cases, the Gas Installation Certificate or gas bulletin may also be requested.

Formalise the contract

The new company will prepare the contract so that you can activate the gas supply with them.

Review the terms and conditions carefully, including any minimum contract period. Once you are satisfied, sign the contract to formalise the switch.

The new supplier will be responsible for managing the cancellation process with your previous supplier.

Why switch gas supplier?

There are many reasons to consider changing natural gas supplier.

Price: 77.4% of households that switched gas supplier did so mainly to reduce their bills and obtain a more competitive tariff. Costs can vary significantly between companies, so finding a better-priced tariff with another supplier can lead to substantial medium- and long-term savings.
Additional benefits in the offer: 13.2% of users were attracted by offers that included extra benefits, such as insurance or complementary services. One example is Repsol’s boiler assistance and home emergency services. With us, you can also save even more by combining the services you contract.
Combined electricity and gas tariff: 16.8% of households chose combined gas and electricity packages, looking to simplify the management of both services and obtain discounts by contracting both energies with the same supplier. This is a significant figure, especially compared with the 6.45% of users who changed their electricity contract for this reason.
Better customer service: 7.7% decided to switch due to negative experiences with customer service, looking for better-quality support from their new provider. Choosing a company with a good customer service reputation can improve your overall experience.
Change of residence: This reason led 2.8% of consumers to look for new suppliers, either because the previous supplier did not operate in their new location or because they wanted to take advantage of better conditions in the area.

In addition to looking for more competitive tariffs, it is also useful to consider strategies to reduce gas consumption.

Frequently asked questions

How long does it take to switch gas supplier?

Switching gas supplier usually takes between 3 and 7 business days, depending on the closing date of your current company’s billing cycle.

With Repsol, during this period you will receive the contract, activation and access to Repsol Vivit, the customer area where you can review your consumption.

There will be no interruption to your gas supply during the process. The change will be reflected on your next bill once the procedure has been completed.

It is important to note that you may still receive a bill from your previous company covering the period up to the day of the switch.

Does switching gas supplier have a cost?

In general, switching gas supplier is free. However, if you have a contract with a minimum term or lock-in period with your current company, you may have to pay a penalty. This is usually around 5% of the energy the customer is estimated to consume until the end of that period.

Review your contract conditions before requesting the switch to avoid unexpected costs.

Who can switch gas supplier?

The gas supply contract holder is the person authorised to manage the change of supplier.

If you are not the contract holder, you will need to request a change of account holder before carrying out the switch.

Can I switch gas supplier if I have unpaid bills?

It is not possible to switch supplier with unpaid bills, as the current company will claim the amount owed. It is important to settle any debts before managing the switch to avoid legal issues or later complications.

If it is proven that the debt is not correct, you will not need to pay it.

How do I switch gas supplier in a rented apartment?

In a rented apartment, the switch must be managed by the gas contract holder. If you are the tenant, make sure you have the owner’s authorisation if they are the contract holder, or request a change of account holder before switching supplier.

You should also make sure you choose a tariff adapted to the property’s energy use.

Responsable	Repsol Comercializadora de Electricidad y Gas, S.L.U. Delegado de protección de Datos: protecciondedatos@repsol.com
Datos objeto de tratamiento	Tus datos identificativos y de contacto.
Finalidad y legitimación	Remitir, por medios electrónicos y no electrónicos, comunicaciones comerciales o promocionales de productos y servicios en los sectores de soluciones energéticas, luz y gas con base en tu consentimiento, otorgado mediante la marcación de la casilla dispuesta a tal fin en esta página web. El consentimiento será revocable en cualquier momento.
Destinatarios	Terceros que prestan servicios a Repsol en su condición de encargado del tratamiento en el marco de la finalidad referida.
Derechos	El interesado podrá ejercitar los derechos de oposición, acceso, portabilidad, rectificación, limitación y supresión de datos así como revocar en cualquier momento su consentimiento remitiendo una comunicación por escrito a Repsol Comercializadora de Electricidad y Gas, S.L.U. o un correo electrónico a protecciondedatos@repsolluzygas.com. Asimismo, si considera que no se han tratado sus datos personales de acuerdo con la normativa de protección de datos, puede contactar con el Delegado de Protección de Datos a través de la dirección protecciondedatos@repsol.com y/o presentar una reclamación ante la Agencia Española de Protección de Datos (www.aepd.es).
+ Info	https://www.repsol.es/particulares/hogar/luz-y-gas/condiciones-potenciales/

How to switch gas supplier in Spain: step-by-step guide