Solar panels for self-consumption in Seville, Spain: turnkey installation

Solar panels in Seville: why they work so well here

Seville has around 3,000 hours of sunshine a year, and each kWp of panels produces roughly 1,600 to 1,750 kWh a year. On top of that, the heaviest consumption here, air conditioning in summer, coincides with the sunniest hours, so much of what the panels produce is used straight away, which is when you save the most.

We carry out turnkey installations: from the study of your consumption and your roof to the legalisation and the registration of surplus compensation with your supplier. All you have to decide is the size and, if you want one, the battery.

Self-consumption in Spain, explained

In Spanish, rooftop solar for your own use is called autoconsumo (self-consumption), and the energy you do not use is called excedentes (surplus). The rules come from Royal Decree 244/2019, the current framework for self-consumption. In practice:

• You use your own solar energy first. Whatever the house consumes while the panels produce is energy you do not buy.
• The surplus goes to the grid. With the simplified compensation scheme, your supplier deducts it from your bill each month, at a lower price than the energy you buy.
• Your contract stays with your supplier (Endesa, Iberdrola, Naturgy, Octopus or any other), and the meter belongs to the distributor, e-distribución in Seville. We handle the paperwork with both.

What the solar panel installation includes

• Preliminary study. We analyse a year of electricity bills, the orientation and pitch of the roof, shading and the space available, and suggest the power that suits you best.
• Panels and structure. Mounting on tiles, metal sheet or a flat roof, with the right structure and fixings that respect the waterproofing.
• Inverter. The unit that converts the direct current from the panels into the alternating current your home uses, with monitoring on your phone.
• Protection devices. DC and AC protection, a surge protector and connection to the home’s fuse board.
• Battery, if you want one, to store the daytime surplus and use it at night.
• Legalisation. Technical report or project depending on the power, installation certificate registered with the Junta de Andalucía and paperwork with the distributor and the supplier to compensate the surplus.
• Commissioning and an explanation of the app so you can see what you produce and what you use.

What size of system do you need?

Your consumption decides it, not the size of the roof. That is why we always start with a year of bills: how much you use, at what times and in which months. As a guide:

• Detached house with air conditioning. Usually a 4 to 5 kW system, which covers much of the home’s consumption with a well-oriented roof.
• Detached house with an aerothermal heat pump, a pool or an electric car. Systems of 6 kWp or more, often with a battery for the afternoon and evening.
• Flats. In a block of flats the roof is a common element and the natural route is collective self-consumption with the other neighbours.

An electric car that covers 15,000 kilometres a year uses 2,400 to 2,550 kWh: with about 2 kWp of extra panels you cover almost all of it if you charge during the day. If that interests you, see home EV charger installation.

Solar panels in Seville: guide prices

The final price depends on the type of roof, the distance between the roof and the fuse board, the panels and inverter chosen and whether you add a battery. Other rates are on our prices page.

Savings and payback

Average savings in residential self-consumption were 189 euros per kW installed per year in 2025, according to APPA Fotovoltaico. For a 5 kW system that is about 945 euros a year, so an investment of 5,500 to 7,000 euros pays for itself in around six or seven years. From then on, the energy from the panels is practically free for the rest of their useful life.

How to get the most from your savings:

1. Use electricity during the day. Programme the washing machine, dishwasher, water heater and pool pump for the sunny hours.
2. Make the most of the climate. Air conditioning and aerothermal heat pumps run exactly when the panels produce.
3. A battery for the evening. In Seville consumption rises at dusk; the battery shifts the midday surplus to then. In 2025, 61 % of new residential systems already had a battery according to UNEF, and installed battery capacity grew by 65 %.
4. Adjust your contracted power once you see your new real consumption.

How we work

1. You send us your bills and photos or the location of the roof.
2. Study and proposal with the power, estimated production, saving and payback period.
3. Technical visit to confirm the roof, shading, cable route and the condition of the fuse board. If the board needs updating, see fuse board replacement.
4. Fixed quote with all equipment and legalisation included.
5. Installation of panels, inverter and protection devices, with a functional test.
6. Legalisation and registration of surplus compensation, and handover of the documents.

Self-consumption regulations

• Royal Decree 244/2019: regulates self-consumption, its modalities (without surplus and with surplus, with or without compensation) and collective self-consumption. Royal Decree-law 20/2022 extended the maximum distance between the installation and the associated consumers from 500 to 2,000 metres.
• ITC-BT-40 of the REBT: low voltage generating installations, with their protection and connection to the indoor installation.
• Royal Decree 1699/2011: grid connection of small installations.
• ITC-BT-04: technical design report for the usual home installations and an engineer’s project from 10 kW.
• CTE HE 5: minimum contribution of renewable electricity in certain new buildings.

The installation is carried out by a registered installer company, which issues the certificate and registers it with the industry department of the Junta de Andalucía. Surge protection is required in solar PV, and DC protection devices must be specific to that use.

Where we install: Aljarafe villas, Dos Hermanas and new builds

• Villas and townhouses in the Aljarafe. In Tomares, Mairena, Bormujos, Espartinas, Gines or Palomares del Río there are many well-oriented roofs and homes with air conditioning and a pool, the ideal profile. More on the Aljarafe north, Tomares, Mairena del Aljarafe and Bormujos.
• Dos Hermanas, Montequinto and Entrenúcleos. Developments of houses, such as the Insur villas in Entrenúcleos or the Enea semi-detached homes, allow a 4 to 5 kW system on the roof. More on Dos Hermanas and Entrenúcleos.
• New homes with an A energy rating. Some developments already come with solar PV, such as Alvareda by Habitat in Entrenúcleos, with solar PV and an aerothermal heat pump. In blocks of flats, solar PV is usually communal, on the building roof.
• Alcalá de Guadaíra and La Rinconada. Houses such as those of Residencial Lorca in San José de la Rinconada, with large roofs.

If you also want to charge your car with the sun, control everything from an app with a smart home installation or renew the fuse board for the new system, we do it in the same project. Everything to do with energy is under solar and energy efficiency.