Naturgy vs Repsol: which is cheaper in Spain in 2026?

Naturgy and Repsol are two of Spain's biggest household energy brands, but they are not selling exactly the same thing.

Naturgy keeps its electricity offer relatively simple: a fixed 24-hour price, a three-period night tariff, physical energy shops and solar plans. Repsol sells the same basic tariff shapes, but much more of its pitch is built around Waylet: rewards that connect your electricity contract to fuel, public charging and other purchases.

Prices move often, and promotions can change the answer for a few months. Treat the figures below as a dated comparison, not a quote. Your own kWh, your potencia contratada, your usage split and any add-ons decide the real result.

The 30-second answer

Naturgy and Repsol at a glance

Naturgy is one of Spain's largest electricity suppliers. CNMC-based market reporting puts it among the major free-market household retailers, and the company sells fixed, time-of-use and solar electricity plans through a long-established service network.

Repsol is best known for fuel, but it is also a major household-energy supplier. Its clearest difference is the connection between home electricity and Repsol's wider mobility ecosystem: Waylet, fuel, charging and cross-product rewards.

One important distinction: your retailer is not your distributor. Changing from Naturgy to Repsol, or the other way around, does not replace the cables, meter or local grid operator. It changes the company that bills you. A normal electricity-supplier switch does not involve a power cut — the mechanics are the same as in our guide to switching electricity supplier in Spain.

Which is cheaper for fixed-price electricity?

The fairest comparison uses both the energy price and the two daily power charges. Looking only at the price per kWh can give the wrong answer, especially in a low-consumption property or second home.

Naturgy's public Tarifa Por Uso page showed a 24-hour energy price of €0.112000/kWh, with power terms of €0.123030/kW/day for P1 and €0.061562/kW/day for P2 when checked. Repsol's Ahorro Plus page positions the tariff as a fixed kWh price for 12 months with no permanence and Waylet fuel credit; the comparison below uses the public Repsol Ahorro Plus figures checked for this article.

Naturgy charges less for energy. Repsol's power term is more balanced: lower than Naturgy in peak power, higher than Naturgy in off-peak power. For most occupied homes, the lower energy rate matters more than the small power-term difference.

A like-for-like example

Take a home using 270 kWh a month, with 4 kW contracted in both power periods and a 30-day bill.

In this example, Naturgy is about €1.62 a month cheaper before taxes, meter rental and other regulated line items. The gap is small enough that a real Repsol reward could reverse it, but a reward is not the same as a lower electricity bill.

For the same 4 kW setup, Repsol's lower peak power price only offsets its higher energy price below roughly 66 kWh a month. That makes Repsol's base tariff potentially interesting for a nearly empty property. For normal year-round use, Naturgy's lower kWh price usually has more weight.

If you want to check whether your standing charge is too high, start with why your potencia contratada is probably wrong.

What about night and time-of-use tariffs?

Both companies publish three-period tariffs. Weekdays have peak, flat and off-peak energy periods; weekends and national public holidays are off-peak. Naturgy's Tarifa Noche page showed the standard 2.0TD period structure and the following pre-tax energy prices when checked. Repsol's Discriminación Horaria page uses the same peak, flat and off-peak concept, with Waylet rewards layered on top.

Repsol is cheaper in peak hours. Naturgy is much cheaper off-peak. Using 270 kWh a month split 25% peak, 26% flat and 49% off-peak, plus 4 kW of power, the illustrative pre-tax totals are about €51.89 with Naturgy and €53.79 with Repsol.

The right answer still depends on your smart-meter data. A household that cooks, heats water, charges a car or runs a pool pump overnight may benefit much more from Naturgy's lower off-peak price. A household with heavy weekday peak use may find Repsol closer than the example suggests.

If you are choosing between fixed, time-of-use and market-indexed tariffs, read dynamic electricity contracts in Spain before signing anything.

Is Repsol's Waylet discount worth it?

This is the key question in the whole comparison.

Repsol's Ahorro Plus page advertises 10 cents per litre in Waylet balance for 12 months. Its Waylet electricity pages also promote app-based electricity management, fuel rewards and sometimes extra balance or percentage-back offers. That can be valuable — but only if you would use Repsol anyway.

For the sample fixed-price bill above, Naturgy saves about €19 a year before tax. At a 10-cent-per-litre reward, only around 190 litres of qualifying fuel over the year would bridge that base-tariff gap. At 20 cents, it would take about 95 litres. On paper, that is easy for a driver to reach.

But ask four questions before counting it as a saving:

1. Is the reward permanent, or only a temporary promotion?
2. Do you need to pay through Waylet every time?
3. Can you use all the balance against something you would have bought anyway?
4. Does keeping another service or maintenance plan cost more than the reward?

If the answer to those questions is yes, Repsol can be the better overall deal. If you do not drive, do not use Repsol public chargers, or dislike app-based reward schemes, compare the energy contract without the headline bonus.

Can I get PVPC or the bono social with Naturgy or Repsol?

Yes, through the regulated arms of both groups — not through their ordinary free-market contracts.

• Naturgy group: its designated regulated retailer.
• Repsol group: Régsiti Comercializadora Regulada.

PVPC is the regulated electricity tariff for eligible supplies with contracted power of no more than 10 kW. It is also the route required for the bono social electricity discount. A Naturgy or Repsol free-market contract is not PVPC, even if the logo or group feels familiar.

Contracts, renewal and added services

The main tariffs compared here say they have no minimum term, but the price commitment normally lasts 12 months. Those are different ideas: you can leave without an energy-tariff exit penalty, while the supplier can offer a new price for the next contract period.

Always check three things in the contract summary:

• the date the energy price ends;
• whether a maintenance or assistance service was added;
• how that separate service can be cancelled.

Both companies sell optional home assistance. Repsol's pages prominently promote maintenance services on some offers, and the discounted energy price can differ depending on the bundle. Naturgy says its headline Por Uso prices do not require additional services. Read the final contract, not just the comparison card.

If a monthly service appears on your invoice and you are not sure whether it is optional, use how to read your Spanish electricity bill to identify the line before you switch.

Customer service and apps

Naturgy offers phone, email, WhatsApp, its customer area and the Naturgy Clientes app. It also advertises around 130 shops where customers can discuss bills, contracts, changes of account holder and complaints.

Repsol offers phone and email support, an online customer area, Vivit for contracts, bills and usage, Waylet for rewards, and Multienergy offices. Vivit includes bill forecasts and consumption views; Waylet adds another app if you want to use the mobility benefits.

Repsol's public Trustpilot score was higher when checked, but it is not a clean energy-service comparison. Repsol's merged profile includes many reviews of petrol stations, shops and forecourt staff. Naturgy's recent reviews also contain many invited comments about technician visits. Treat both scores as a signal, not a verdict.

For an English-speaking customer, neither household-energy site provides a consistently complete English journey. Repsol says its channels support English and French as well as Spain's official regional languages, but the retail pages and contract details remain primarily Spanish. Keep copies of every contract and complaint, and ask for the complaint reference number.

Which is better for solar panels?

Both offer solar tariffs, export compensation and virtual batteries.

On the detailed pages checked, both published an export-compensation rate of €0.06/kWh. Naturgy says its virtual battery is free; Repsol lists a €1.99 monthly fee. Repsol's comparison page published import prices of €0.1399/kWh for its Solar tariff and €0.1299/kWh for its Virtual Battery tariff.

Do not choose a solar tariff from the export rate alone. Compare:

• the price paid for electricity imported from the grid;
• the export rate and whether it can change monthly;
• the virtual-battery fee;
• whether the balance expires;
• whether it can pay power charges or bills for another property;
• what happens to the balance if you switch or change the contract holder.

Naturgy says its virtual-battery balance can be used across eligible bills for supplies under the same holder, expires after five years and is lost when the relevant electricity contract ends. Read Repsol's current balance-allocation and cancellation conditions just as carefully. For the broader self-consumption picture, use our solar panels in Spain guide.

So, should you choose Naturgy or Repsol?

Choose Naturgy if you want the lower published electricity price without relying on rewards, you shift a meaningful share of use to nights and weekends, or you value a large network of dedicated customer shops.

Choose Repsol if you already buy fuel or public charging from Repsol, will actively use Waylet, and the rewards you can realistically redeem exceed the slightly higher base energy cost.

The best answer is still on your own bill. Compare a full year where possible: annual kWh, contracted power, time-of-use split, services and every discount. A cheap-looking kWh can be wiped out by the power term, an unwanted maintenance plan or a reward you never use. Our broader guide to lowering your electricity bill in Spain explains the other levers before you switch.

FAQ

Is Naturgy cheaper than Repsol? For the public electricity prices checked on 21 September 2026, Naturgy was slightly cheaper for a typical household. Repsol can become cheaper overall if you make enough qualifying purchases and fully use the Waylet balance.

Do Naturgy or Repsol have permanence? The household tariffs compared here say there is no minimum term. Optional maintenance services can have separate cancellation conditions, so check them independently.

Will my electricity be cut off if I switch between Naturgy and Repsol? No. A normal retailer switch is administrative. The distributor and physical connection remain the same.

Can I contract PVPC with Naturgy or Repsol? Yes, through their regulated companies: Naturgy's designated regulated retailer and Régsiti for the Repsol group. Their normal free-market offers are not PVPC.

Is Repsol's fuel discount better than a cheaper electricity tariff? It can be. Calculate qualifying litres or charging spend, the exact reward rate, the promotion period and how much balance you will genuinely redeem. Do not count a headline reward at full value if it requires an extra paid service.

Which is better for a second home? For a nearly empty property, the power charges matter more and Repsol's fixed plan can be competitive at very low use. For a home used mainly on weekends, Naturgy's lower off-peak rate may be more attractive. Use the property's actual annual consumption before deciding.

Does either company offer service in English? Repsol reports multilingual service including English, while Naturgy has an English corporate contact route, but neither offers a consistently complete English household-contract journey. Important tariff and contract documents are commonly in Spanish.

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Methodology: prices were checked on the suppliers' public websites and tariff comparison pages on 21 September 2026. Illustrative totals use 270 kWh/month, 4 kW in both power periods and 30 days. The time-of-use example allocates consumption 25% peak, 26% flat and 49% off-peak. Figures exclude taxes, meter rental, bono social financing, SNOEE and other separately billed regulated items unless stated. Promotions and tariffs can change; compare the personalised contract before switching.