Solar batteries in Seville, Spain: store your panels' energy for the night

Solar batteries in Seville, Spain: when they make sense

In Seville, solar panels produce a lot at midday, just when many houses are empty. Without a battery, that energy is exported to the grid and credited on your bill at a low price (the excedentes, or surplus, compensation); with solar batteries it is stored and you use it in the evening, when you switch on the air conditioning, cook or charge the car. That is why their use has soared: in 2025, 61 % of new residential installations already included a battery, according to UNEF, the Spanish solar industry association, and battery installations grew by 65 % that year, to 540 MWh.

But it does not always pay off. It suits you if:

• You use a lot in the evening and at night: air conditioning in summer, aerothermal heat pump (aerotermia), induction hob.
• You export a lot of surplus and get little for it.
• You have, or will have, an electric car that you charge at night.
• You want backup for power cuts, with the system designed for it.

If almost all your consumption is during the day or your surplus is small, we will tell you.

A new battery or one added to your panels

• New installation with a battery: a hybrid inverter from the start, with panels and battery sized together. See solar panels.
• Battery added to existing panels: if the inverter is a hybrid, it connects to it; if not, a battery inverter is added to work alongside the current one.

We install lithium batteries, the technology used in homes today for its size, cycle life and safety, in line with the UNE-EN 62619 standard. The installation follows Royal Decree 244/2019 on self-consumption and the Spanish Low Voltage Electrotechnical Regulation (REBT).

Villas in Seville and how they use energy

In the detached houses of the Aljarafe, in Tomares, Mairena del Aljarafe or Bormujos, and in La Rinconada or Dos Hermanas, the pattern repeats: panels on the roof, an empty house during the day and heavy consumption on returning home, with air conditioning and the pool in summer. With around 3,000 hours of sunshine a year, the midday surplus is large, and that is where a battery earns its keep. In country houses around Carmona with no grid connection, the battery is essential and part of an off-grid solar installation.

The alternative: your car battery

If you have a compatible electric car, bidirectional V2H charging lets you use its much larger battery to power the house at night.

How we work

1. We study your consumption from your bills or with a monitor, and the real production of your panels.
2. We tell you whether it pays off and what capacity and inverter you need.
3. Fixed quote in writing.
4. Installation of the battery, the inverter if needed and the protections.
5. Setup and paperwork, and we show you how to follow charging and discharging in the app.

To keep your installation performing, there is solar panel maintenance. More under solar and energy efficiency, and our general rates on the prices page.