Iberdrola vs Gana Energía: which is actually cheaper?

Iberdrola is the giant everyone already has. Gana Energía is the small Valencian challenger people switch to when they get tired of paying giant prices. So which one should you pick?

Here is the honest version. Gana Energía beats Iberdrola on the price per kWh and charges no monthly fee. But it is not the cheapest retailer in Spain, and anyone telling you it is has not checked the market lately. Iberdrola, meanwhile, leans on brand, scale, and a first-year discount that looks great for twelve months and then quietly disappears.

Prices below are indicative and move month to month. Your own bill, your consumption pattern, and your contracted power decide the real result. Treat the headline rates as a starting point, not a promise.

The 30-second answer

Head to head: the flat 24h tariff

This is the cleanest comparison. One price all day, no time bands to juggle.

Read that top row again. Gana Energía's energy price runs roughly 2.5 to 3 cents per kWh below Iberdrola before any discount. On a home using around 3,000 kWh a year, that gap alone could be worth somewhere near €75 to €90 a year on the energy term. Not life changing, but real, and it repeats every year.

Iberdrola's counter is the 15% first-year discount, which can wipe out the difference for exactly one year. Then it lapses, the higher base rate takes over, and you are back to paying more. If you plan to stay put, the lower base price is the safer long game.

One catch on Gana's side: its off-peak power term (0.0894 €/kW/day) is higher than Iberdrola's valley rate (0.0603). If your contracted power is high, that narrows Gana's lead. Check your potencia before assuming — why your potencia contratada is probably wrong explains how to read it off your bill and what to lower it to.

Head to head: three-period (time-band) tariffs

For anyone who can push laundry, dishwasher, or EV charging into nights and weekends.

Gana's off-peak and standard rates undercut Iberdrola again, and its valley price (around 0.080) is where the real savings live if you shift heavy use to nights. Iberdrola's peak rate can spike toward 0.194 on some plans, which stings if you cannot avoid daytime use. Verdict: if you are a night owl, Gana's cheaper valley rate usually wins. If you are willing to follow hourly prices instead of fixed bands, indexed and dynamic contracts are a different animal again.

The part nobody tells you: neither is the cheapest

Gana Energía is a genuine improvement on Iberdrola. It is also, on pure price, a mid-table retailer. As of mid-2026, several smaller names (Visalia, Plenitude, Octopus, TotalEnergies among them) sit at or below Gana's 0.119 €/kWh on flat tariffs.

So why would anyone still pick Gana over a cheaper name? Three reasons that do not show up in the per-kWh number:

• No monthly fee and no lock-in. You can leave whenever you want, and empty months stay cheap.
• Solar surplus compensation through a virtual wallet (batería virtual), which matters a lot if you have panels or plan to. Our solar panels in Spain guide covers how surplus compensation actually pays out.
• Independent and reachable, with service reviews that beat Iberdrola's.

If you have no solar and only care about the last cent, look wider than these two. If you want a solid step up from Iberdrola without hunting the whole market, Gana is a reasonable landing spot. Either way, the tariff is only one lever — how to lower your electricity bill in Spain covers the others.

Which one actually fits you

Second homes: the fee trap

For a place you use part of the year, a fixed monthly fee is the silent budget killer. It hits whether you burn 400 kWh or 4. Because Gana's fixed tariffs carry no management fee, an empty-house month drops close to just the power (potencia) term. That structure tends to suit expat and second-home owners better than a plan built for steady year-round use.

Iberdrola does sell plans aimed at second residences. If you want to stay with a large provider, ask about those by name rather than defaulting to a standard plan, which can be a poor fit for an often-empty house. If you have only just bought the place, start with setting up electricity in Spain after buying a house.

Before you switch, check these

• *Your contracted power (potencia).* You pay for it daily, used or not. Plenty of homes are over-contracted. Dropping it could cut your bill more than any provider switch.
• Your real consumption split. Pull your last full bill. The kWh per period, not the headline rate, decides which tariff shape wins — how to read a Spanish electricity bill shows where those numbers hide.
• Discount expiry. A first-year discount is a one-year price, not a permanent one. Compare year two, not the welcome offer.
• Taxes. Electricity tax and IVA sit on top, and both have been shifting through 2026. Compare bill totals, not just energy rates.
• Lock-in. Both offer no-permanencia options, so confirm it on your contract and keep your exit free.

What real customers say about Gana Energía

Iberdrola's reputation is well known. Gana is the one people ask about, so here is the honest read. The scores are genuinely split, and where you land depends on whether anything ever goes wrong with your account.

That gap is the whole story. Most customers pay a fair price, use the app, and never think about it again. The minority who hit a billing problem run into a wall. Trustpilot's 4 stars and OCU's "very poor" are both true; they just describe different customers.

What people praise

• Prices that undercut the big legacy retailers
• A clean app that shows daily consumption
• Own call centre, no endless outsourced menus
• No permanencia, so leaving is easy
• Solar surplus paid into a virtual wallet

What people complain about

• Estimated-reading errors. The number-one gripe. Bills based on estimated use that do not match reality, then a surprise "complementary" bill months later when the real reading lands. Worse on gas than electricity.
• A 30 € charge for a returned direct debit, even when the bank caused it.
• Slow complaint handling. This is the one OCU flags hardest. If your case is simple you are fine; if it is complex, expect frustration.
• Pushy or misleading sales calls, including a few reports of callers posing as your current provider to switch you over.

The takeaway: Gana is a solid pick for a low, no-fuss price under normal conditions. The risk is not the price, it is what happens if an incident lands on your account. If top-tier support matters more than saving a few euros, a provider like Octopus rates better on service — see Iberdrola vs Octopus Energy for that head-to-head.

Real questions people ask about Gana Energía

These come up again and again in forums and community groups. Straight answers below.

"Has anyone actually saved money with Gana, or is it all marketing?" Plenty of customers report a lower bill than their old big-name provider, mostly thanks to the cheaper kWh and no monthly fee. The savings are real but modest, not the 20 to 30% that cold callers sometimes claim. Compare against your own bill and ignore any phone pitch that leads with a big percentage.

"Is Gana Energía a scam?" No. It is a licensed retailer founded in Valencia in 2015 with hundreds of thousands of customers. The "scam" language in reviews almost always traces back to two things: aggressive sales calls from third-party agents, and surprise regularisation bills from estimated readings. Both are worth knowing about, but neither makes the company illegitimate.

"Why did I get a surprise bill months later?" Estimated readings. If the meter is not read properly, you are billed on an estimate, and when the real figure arrives the difference is settled in one lump. Submit your own meter reading through the app to cut the risk, especially on gas.

"They charged me for a returned receipt. Is that normal?" Gana applies a charge (widely reported around 30 €) when a direct debit bounces. Keep the account funded on billing dates, and if a bank error caused it, dispute it in writing straight away.

"Someone called saying they were my provider and switched me. What now?" If you were switched without clear consent, you have 14 days to withdraw with no penalty. Report it, and keep any recording or reference the caller gave.

"Can I try it without getting stuck?" Yes. No permanencia means no exit penalty. If it does not suit you, switch out. Confirm the no-lock-in clause is on your own contract before signing. The mechanics, timings and paperwork are in how to switch energy supplier in Spain.

FAQ

Is Gana Energía cheaper than Iberdrola? Yes, on the flat 24h tariff. Gana's energy price sits around 0.119 €/kWh against Iberdrola's 0.143 to 0.149, with no monthly fee either side. Iberdrola's first-year discount can level things for twelve months, but the lower base price usually wins over time. Your consumption and contracted power set the final figure.

Is Gana Energía a trustworthy company? It is an established independent retailer with more than 500,000 customers and review scores that generally beat Iberdrola's. Complaints, as everywhere, cluster around billing errors. No-lock-in contracts keep the risk of trying it low.

Which company is cheaper than Iberdrola? Many. Gana is one consistently cheaper option, and several smaller retailers price below Gana too. The cheapest choice still depends on your own consumption and contracted power, which is exactly why comparing against your bill beats trusting any ranking.

Does Gana Energía offer green energy or solar? It supports solar self-consumption and compensates surplus through a virtual wallet. If a 100% green certificate is the priority, confirm the current tariff terms directly, since offers change.

Will switching cut my power off? No. Changing retailer in Spain does not interrupt supply, and since early 2026 the switch generally completes in around 10 working days.

What do I need to switch? Your CUPS code, printed on any electricity bill. That alone is enough to start.

Bottom line

Gana Energía beats Iberdrola on price, fees, and flexibility, and it is the stronger pick for most homes, especially second homes and solar households. Iberdrola earns its keep on brand, support, and a first-year discount that suits short stays. But if the absolute lowest bill is the goal, neither is the finish line. Both are beatable — and if you want to see how Iberdrola stacks up against the other Spanish giant, read Iberdrola vs Endesa.

Whatever you choose, the biggest wins usually come from right-sizing your contracted power and matching the tariff to how you actually use electricity. The only way to know your number is to compare against your own bill.

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HolaSwitch compares a curated panel of electricity retailers to help you find a tariff that fits your home in Spain. We do not currently partner with Iberdrola or Gana Energía; this comparison is for information only. Any affiliate links elsewhere on the site are disclosed and do not affect your price or how results are ranked.