Areitio is born with an efficient energy model based on aerothermal energy, solar energy, and standards for responsible consumption.

From its conception on paper, the Areitio Sports City was designed to be a sustainable and energy-efficient facility. Now, on the verge of its full opening, the new sports center demonstrates a set of advanced energy sustainability solutions, which optimize consumption and ensure responsible operation of the facilities in the long term. The entire project has been developed strictly adhering to the requirements of the Technical Building Code (CTE), ensuring adequate levels of thermal and acoustic insulation, structural safety, universal accessibility, and energy efficiency.

The main buildings, corresponding to the grandstand and the men's first team center, incorporate state-of-the-art aerothermal systems for air conditioning and domestic hot water (DHW) production. These systems use air-to-water heat pumps that allow up to 70% of the required energy to be extracted from the outside air, significantly reducing energy consumption compared to conventional heating and cooling systems such as fossil fuel boilers. However, Areitio also has a gas boiler to support the aerothermal system during periods of higher usage.

In addition, grid-connected photovoltaic solar panels have been installed, enabling the complex to generate its own electricity. Over a year of operation, the installation is capable of covering approximately 20% to 25% of the total electrical demand of the Sports City, significantly reducing dependence on the conventional grid and contributing to the optimization of energy consumption in the various buildings.

The architecture of the complex incorporates passive sustainability strategies from the design phase, including optimized solar orientation, thermal gain control systems through shading elements, and high-efficiency thermal insulation. The construction solutions achieve thermal transmittance values below 0.25 W/m²·K in facades and 0.20 W/m²·K in roofs, along with controlled natural ventilation systems. These criteria improve indoor thermal comfort and reduce the demand for active air conditioning, effectively integrating into high-use spaces such as gyms, locker rooms, and medical rooms, as well as administrative and technical areas.

Accessible design constitutes another pillar of the project. All buildings comply with current regulations, ensuring adapted routes, access, and services, providing comfortable and safe use for players, staff, visitors, and people with reduced mobility.

With this approach, SD Eibar reinforces its commitment to sustainability and the energy efficiency of its facilities. Areitio's energy solutions not only reduce the environmental impact of the complex but also ensure stable and optimized operation for the daily activities of the teams, while creating a benchmark in energy management for sports infrastructures. Areitio is fully aligned with international best practices to achieve efficient sports facilities with a low carbon footprint and optimized long-term operating costs.