What you are paid for your surplus solar, with a verification date
When your panels produce more than you use, the surplus is exported to the grid and your electricity supplier discounts it from your bill. Here is what each one pays, verified on 16 August 2026 on their official websites. No commission from any of them: we do not sell electricity contracts.
How simplified compensation works
Simplified compensation under RD 244/2019 is a discount, never an income: every kWh you export is valued at the price agreed with your supplier and subtracted from the energy term of that month's bill. The discount is capped: it cannot exceed the cost of the energy you drew from the grid in that billing period. The energy term never goes negative and you never receive money.
It applies to self-consumption installations of up to 100 kW, which covers any home roof. Compensation is monthly: whatever you do not offset in a month is lost, unless your tariff includes a virtual battery that stores it as credit. That is why almost every supplier offers one: it is their commercial way round that legal cap.
What each line of your bill means, and where this discount appears, is explained in your Spanish electricity bill, explained.
Surplus compensation compared, August 2026
Ten suppliers: the big national names plus two with a strong presence in the Comunitat Valenciana, Gana Energía (based in Valencia) and Imagina Energía. All prices are before taxes unless stated otherwise; on top of what you see, the electricity tax (5.11%) and VAT are added. VAT returned to 21% on 1 June 2026 when the temporary reduction ended.
| Supplier | Surplus price | How it works | Key conditions | Verified on |
|---|---|---|---|---|
| Iberdrola | 0.06 €/kWh before taxes (Plan Solar). The Plan Ahorro Solar compensates at 0.04 €/kWh and includes the Solar Cloud credit wallet at no cost. | Agreed fixed price (simplified compensation under RD 244/2019). The Plan Ahorro Solar adds a virtual battery (Solar Cloud) at no cost. | You must have your electricity contract with Iberdrola. Plan Ahorro Solar: offer valid until 31/08/2026, with energy at 0.099, 0.145 and 0.220 €/kWh by time band, before taxes. The Plan Solar terms make no mention of a tie-in period. | 16-08-2026 |
| Endesa | 0.06 €/kWh before taxes (Solar Plus and Solar Plus & Batería Virtual). Solar Basic does not compensate surplus: it only applies a 15% discount from 6 pm to 10 am. | Fixed price. Optional virtual battery at 2 €/month that stores your leftover credit. Energy consumed at 0.159900 €/kWh (7% discount in the first year on Solar Plus). | No tie-in. You must have your electricity contract with Endesa. Not compatible with PVPC or with the bono social discount. Prices before taxes: the electricity tax (5.113%) and VAT (21%) are added on top. | 16-08-2026 |
| Naturgy | 0.06 €/kWh before taxes (0.0726 €/kWh with VAT at 21%). | Fixed price, reviewable monthly under the contract. | You must have your electricity contract with Naturgy. Compatible with the Tarifa Solar and the usage-based tariffs, not with the Tarifa Plana. The Tarifa Solar has no tie-in (energy at 0.1822, 0.1092 and 0.0739 €/kWh in peak, mid and off-peak). | 16-08-2026 |
| Repsol | 0.06 €/kWh (Tarifa Solar). | Fixed price valid for 12 months, then reviewed with 30 days' notice. It also has a Tarifa Batería Virtual that stores your surplus in euros towards future bills. | No tie-in. You must have your electricity contract with Repsol. The monthly legal cap applies: the compensation cannot exceed the cost of the energy you drew from the grid that month. | 16-08-2026 |
| TotalEnergies | 0.07 €/kWh. | Fixed price, not indexed. | You must have your electricity contract with TotalEnergies. For installations of up to 100 kW, renewable and with no business activity attached (simplified compensation under RD 244/2019). It does not offset the fixed charges: the bill never reaches 0 €. Their page makes no mention of a tie-in period. | 16-08-2026 |
| Octopus Energy | 0.035 €/kWh as standard; 0.07 €/kWh if Octopus installs your solar system. | Fixed price credited to the Solar Wallet, a virtual battery at no cost whose balance never expires. The Octopus Solar tariff has three fixed prices with an annual review. | You must be an Octopus electricity customer. The Wallet can offset the whole bill, standing charges included, and the balance can be shared with other Octopus supplies in the family. Small print: once the bill is offset, a maximum of 1,000 kWh a month goes into the Wallet. No activation or maintenance cost. The CNMC comparator listing confirms the 0.035 €/kWh. | 16-08-2026 |
| Holaluz | Does not publish the price on its tariff pages: it only says it pays for surplus at “one of the best prices on the market”. A help-centre article with no visible date mentions 7 cents/kWh, but it is not a current price sheet. | Two options: Clásica Cloud, paying for the surplus monthly, and Justa Cloud, with a fixed annual fee calculated on the estimated saving and spread over 12 instalments. | You must have your electricity contract with Holaluz (Cloud contract). They publish neither tie-in terms nor the price on their website and refer you to the phone line 900 67 07 07. Ask for the price in writing before comparing. | 16-08-2026 |
| MET Energía España | Indexed: “surplus compensation at the market price as published by REE on its website”. It does not publish a fixed price in €/kWh. The 0.08 €/kWh in circulation comes from commission-based comparison sites, not from its official website. | Indexed to the market price (REE/OMIE) with a wallet-style virtual battery. | The virtual battery balance never expires: it can offset the bill down to 0 € and move credit to another supply held by the same account holder, for example a second home. You must be a MET customer. Their website publishes neither tie-in terms nor the cost of the service; they answer on 900 10 49 59. | 16-08-2026 |
| Gana Energía | 0.06 €/kWh. | Fixed price with the Monedero Virtual (virtual battery): it discounts the full bill, standing charges and taxes included, down to 0 € and stores the rest. | A supplier based, with customer service, in Valencia. You must have your electricity contract with Gana Energía; all its tariffs are compatible. Small print: the wallet only comes at no cost for the first 12 months; after that it costs from 0.07 €/day, around 25 € a year. The balance can be applied to other supplies in the holder's name. Requires a legalised installation. | 16-08-2026 |
| Imagina Energía | 0.040 €/kWh (Tarifa Solar). | Fixed price with the Monedero Solar, a virtual battery at no cost with unlimited storage and no expiry. | No tie-in and no maintenance fees. You must have your electricity contract with Imagina. The bill can never go negative: the leftover goes into the wallet. Prices before taxes. It appears on the CNMC comparator for Valencia postcodes, so it can be contracted in the Comunitat Valenciana. | 16-08-2026 |
Each supplier's name links to the official page where we verified its price. These conditions change often: before signing, check the current terms. Next scheduled review: October 2026.
How we verify these prices
Every figure comes from the supplier's official website, consulted on 16 August 2026, and is cross-checked with the official CNMC comparator (comparador.cnmc.gob.es) using a Valencia postcode and the self-consumption filter. We take no commission from any supplier and process no switches: our work is the panels, the paperwork and the monitoring, not selling you an electricity contract.
Two notes on method. The CNMC comparator does not show the surplus price in its results list, only inside each listing, and its default filters leave out offers that do compensate, so a quick glance is not enough. And when the official website does not publish the price, we say so plainly in the table rather than filling the gap with a comparison site's figure.
Where commission-based comparison sites disagree with the official price sheets
MET Energía. Commission-based comparison sites credit it with 0.08 €/kWh. Its official website says compensation indexed to the market price published by REE, with no fixed price.
Naturgy. It is often credited with 0.07 €/kWh on the Tarifa Solar. Its official price sheet says 0.06 €/kWh before taxes.
Repsol. Advice websites credit it with 0.07 €/kWh. The current terms of its Tarifa Solar say 0.06 €/kWh.
Imagina Energía. Old promotional copy talks about “up to 0.15”. Its current price sheet says 0.040 €/kWh.
Holaluz. It publishes no price at all on its tariff pages. There is only an undated help article mentioning 7 cents/kWh.
Fixed or indexed price: the difference in one sentence
With a fixed price, the supplier always pays you the same for every kWh you export, whatever the market does: that is the case for almost the whole table, from Octopus at 0.035 to TotalEnergies at 0.07. With an indexed price, it pays you whatever the energy is worth at each hour: that is the case for MET, which compensates at the market price published by REE.
The awkward detail of indexed pricing: your panels export exactly when every panel in the country exports, so you are paid for the sunny hours, which tend to be the cheap ones. A fixed price shields you from that, but look at how often it is reviewed: Naturgy reviews monthly, Repsol every 12 months with 30 days' notice, Octopus once a year.
The honest warning: the sunny hours tend to be worth less
The more solar there is in the system, the less energy is worth during daylight hours. It is known as price cannibalisation, and it grows year on year. In practical terms: do not build the sums for your installation on the assumption that your surplus will be worth much. The surplus is the tip; the real saving is the energy you stop buying.
That is why batteries are gaining ground: instead of exporting at 0.06 at midday, you store that energy and avoid buying it at night at your tariff's price, which is quite a bit higher. If you are weighing storing against exporting, we have done the full sums in battery or surplus: which pays off in your case. And sizing the system around your real consumption curve is part of the study behind our solar panel installation.
What if I am on PVPC? The official hourly price
If your contract is the regulated tariff (PVPC), there is no agreed price: your surplus is valued hour by hour at the price resulting from the wholesale market, under the RD 244/2019 mechanism. That value changes every hour of every day, so any figure written here would be out of date the moment it was published.
The official hourly price is published by Red Eléctrica on ESIOS, under indicator 1739, “Precio de la energía excedentaria del autoconsumo para el mecanismo de compensación simplificada (PVPC)”. You can consult it on ESIOS indicator 1739, hour by hour and with full history. It is the primary source: the same one the suppliers use.
Common questions about surplus solar
Can I actually be paid money for my surplus?
Under simplified compensation, no. It is a discount on that month's bill, capped at the cost of the energy you drew from the grid. The energy term never goes negative and you never receive money. Virtual batteries are the commercial way round losing what is left over: they store the surplus as credit towards future bills.
Which supplier pays the most for surplus in 2026?
As of 16 August 2026, on paper, TotalEnergies at 0.07 €/kWh for any customer, and Octopus at 0.07 €/kWh if they install the system (0.035 otherwise). Most large suppliers pay 0.06. But the surplus price should not decide on its own: look too at what you pay for the energy you consume, which weighs far more on the bill.
What is a virtual battery?
It is not a battery: it is a credit wallet held by your supplier. When your surplus goes over the legal monthly cap, the leftover value is recorded as credit and discounted from future bills. Each company sets its own rules: some include it at no cost (Octopus, Imagina), others charge for it (Endesa, 2 €/month) or charge from the second year (Gana Energía, from 0.07 €/day after 12 months).
Do I have to switch supplier to be compensated?
Not to be compensated: any supplier you hold a contract with can apply the simplified compensation. But every price in this table requires having your electricity contract with that company, because they are supply tariffs. Switching for the surplus alone rarely pays if the price of what you consume is worse.
What if one month I produce more than I consume?
With plain simplified compensation, the discount stops at the cost of that month's consumption and the rest is lost: it is neither paid out nor carried over to the next month. With a virtual battery, that leftover is kept as credit. And with a physical battery, you simply do not export it: you use it yourself at night.
Why do these figures not match the comparison sites?
Because many comparison sites earn a commission on every switch and publish promotional or outdated figures. We verify every price on the supplier's official price sheet and cross-check it with the CNMC comparator, which is public and charges no one. When an official website does not publish the price, we say so plainly.
Want the numbers for your home, not the ones in an advert?
With your bill and your roof we prepare the full study: how much you would produce, how much you would use yourself, how much you would export and which surplus tariff fits your consumption pattern. No obligation and no commission from any supplier.
A Captia Technology company. Qualified, chartered engineers.