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14 Solar Panels & 10kW Battery Installation in Los Montesinos

We helped a family in Los Montesinos reduce their €300 electricity bill to just €20 by installing 14 solar panels and a 10kW battery at their residential home.

10 August 2025

Background

The client came to Xcel Energía through a personal referral. We arranged a free on-site solar assessment and consultation at their family home in Los Montesinos, next to Torrevieja.

During our consultation, the client expressed frustration over their rising energy costs, averaging around €300 per month. Their main goal was to reduce energy consumption and increase efficiency throughout the year. There were no special installation requirements for this property, allowing us to design an optimised and straightforward solar solution.

Our energy survey projected a monthly electricity cost reduction from €300 to just €20. With an expected break-even period of only three years, the client was confident in their decision to proceed.

Equipment

  • 14x JA Solar 460W panels
  • 1x SAJ 10kW battery

Installation

We installed 14 high-efficiency JA Solar 460W panels, paired with a 10kW SAJ battery. This setup was designed to maximise solar production and store excess energy for night-time or high-demand use.

The installation was carried out on a standard residential roof without complications, ensuring a clean and efficient fit with minimal visual impact. The setup allows the client to use more energy during peak times, including air conditioning in summer and heating in winter, without increasing their electricity bill.

Results

The client now pays just €20 a month for electricity, a 93% reduction from their previous average. The new system has not only slashed their bills but also enabled greater comfort in the home, with increased energy usage for cooling and heating without concern. They expect the system to pay for itself within three years through energy savings.

“We’re really happy with how the system is working. The bill went from €300 to €20 and we can now use the air conditioning all summer and heating in the winter without worrying. The installation was smooth and we’re very satisfied.”