Energy efficiency has become the cornerstone of smart buildings., allowing consumption to be reduced, resources to be optimized and costs to be cut without sacrificing comfort. combination of sensors, automation and real-time data management makes it possible to adjust air conditioning, lighting or ventilation to the actual occupancy, increasing the performance of the building and minimizing the environmental impact.
Key governments and sectors are taking action with new rules, incentives and tools.: from minimum standards for non-residential buildings and data centers to municipal aid and Energy Saving Certificates (CAE). In parallel, there are regulatory timelines that will affect housing classification and improvement guidelines to meet climate goals.
Technology and smart building management
Automation and the Internet of Things (IoT) They allow real-time data collection and autonomous adjustment of building systems. Thus, ventilation adapts to the indoor air quality, lighting responds to presence and natural light, and air conditioning is modulated according to use and schedules., avoiding waste.
Energy monitoring is another pillar: makes it easier to understand consumption patterns, locate inefficiencies and activate immediate corrective measures. This aligns actual spending with needs, avoids unnecessary peaks, and prioritizes investments with higher returns..
Design and materials also add upWell-insulated enclosures, efficient carpentry, and passive solutions reduce energy demand from the source. The integration of renewables, such as solar photovoltaic or thermal, completes a more sustainable and economical ecosystem.
European and Spanish regulations in progress
Directive (EU) 2024/1275 on the energy efficiency of buildings promotes a zero-emission housing stock by 2050. As a key tool, It establishes minimum energy efficiency standards (MEPS) for non-residential buildings, setting consumption thresholds (kWh/m² year). with milestones in 2030, 2033, 2040 and 2050. In Spain, the MITECO has opened a public consultation to regulate compliance with these minimum requirements in the existing park., including competent authorities, verification, exemptions and sanctioning regime.
In the residential sector, European regulations provide for new qualification requirements. for sale and rent: from 2030 onwards at least the E class, with a reassessment that would raise the bar to D in 2033 and stricter requirements by 2040 (class B). This will particularly affect homes with the poorest energy performance and will accelerate renovations.
Public participation and data centers
MITECO's public consultation on minimum requirements for non-residential buildings It is open from August 4 to September 9, allowing citizens, organizations, and associations to submit comments via a web form. In parallel, Another process has been initiated (until September 15) for a Royal Decree that will establish efficiency and sustainability obligations in data centers..
The future Royal Decree for data centers will consider the reporting of indicators such as surface area, Electrical consumption and its origin (with weight of renewables), water use, type of refrigerants and contribution to the resilience of the electrical system. In addition, it provides for the reuse of waste heat when technically and economically feasible. These measures are aligned with the PNIEC 2023-2030, the Artificial Intelligence Strategy 2024 and Directive (EU) 2023/1791, which strengthens transparency in energy and water performance.
Aid and financing: Galicia and the Valencian Community
Galicia strengthens efficiency in municipal facilitiesIn O Grove (Pontevedra), the Xunta (regional government) financed the replacement of a diesel boiler with a biomass boiler in the water sports pavilion (almost €60.000) and plans similar support for the Monte da Vila football field. The additional line of the Local Cooperation Fund, endowed with €5 million, prioritizes sports and public service initiatives (educational, social, healthcare, and cultural), with higher scores for replacing fossil boilers with renewable energy, improving roofs, thermal envelope, electrical installations, and lighting. This year, there are 89 beneficiary entities and the maximum aid per project is €60.000..
The Galician provincial distribution includes nine entities in Pontevedra (more than €500.000), 29 in A Coruña (€1,6 million), 28 in Ourense (€1,5 million) and 23 in Lugo (almost €1,3 million). Along with these, the Xunta has mobilized €18,6 million (2023-2025) for municipal infrastructure via an additional fund, €11,2 million in the Municipal Infrastructure Fund. Energy Saving Certificates (CAE) (competitive and non-competitive lines), a multi-year line 2025-2026 co-financed with ERDF for €5 million, €3,5 million for public use infrastructure and €8,5 million for strategic projects.
Energy Saving Certificates (CAE) are gaining traction in the Valencian Community: 112 favorable CAEs have been issued with accumulated savings exceeding 134 million kWh. A CAE certifies 1 kWh saved after an efficiency measure; those who implement improvements can monetize these savings by selling them to companies required to meet efficiency targets..
Ivace+i Energy It acts as a regional manager: it validates actions, issues certificates, and registers them in the national system. For energy companies, acquiring CAE is often more cost-effective than contributing to the National Energy Efficiency Fund, while developers recover part of their investment. By sectors, the most notable are industrial (83 certificates), tertiary (47), transport (16) and residential (7).. In progress: 1 CAE in 2023, 84 in 2024, and 68 between January and July 2025 (23 pending); 17 unfavorable and 1 withdrawn.
Which homes need to be improved and how to do it
Houses with F or G classification They will be forced to undertake renovations in order to be sold or rented under the new rules. They are usually properties with poor insulation, old windows, inefficient air conditioning equipment and pathologies such as humidity or mold..
- Renew lighting with LEDS to reduce electricity consumption.
- Improve the Thermal insulation in facades, roofs and openings.
- To integrate renewable energies (PV or solar thermal) when feasible.
- Optimize ventilation for air quality and efficiency.
- Paint facades/roofs with reflective or thermal protection solutions.
- Update air conditioning by high-efficiency equipment.
- Improve acoustic conditioning where appropriate.
- Remove asbestos in accordance with applicable regulations.
Those who don't plan to renovate in the short term have a window of time to sell before the new requirements come into effect, but experts predict that some supply will be taken off the market if improvements aren't made, with the resulting impact on prices and availability.
Home and small facility automation
Time scheduling and automatic control They are allies for reducing consumption in homes and small installations, especially in summer: swimming pools, irrigation, outdoor lighting or air conditioning. There are analog and digital solutions with daily/weekly programming and advanced features such as mobile connectivity or astronomical sunrise/sunset calculation..
- CHRONO and ALPHA: analogue for sewage treatment plants, with double dial and manual selector.
- DATA LOG BT: digital with Bluetooth and app for irrigation (up to 40 cycles).
- ASTRO NOVA CITY BT: astronomical switch for outdoor lighting.
- DATA MICRO +: ideal for air conditioning, second-by-second programming and vacation function.
- DATA UNO D: simulates presence through scheduled switches on.
These devices, easy to install and low consumption, they help automate repetitive tasks, provide security, and improve comfort, aligning with energy-saving goals in both homes and small businesses.
The transition to a more efficient fleet is already underwayMinimum standards, performance reporting, and public funding coexist with technological solutions that facilitate everyday savings. Being informed about deadlines, taking advantage of aid, and planning the most cost-effective renovations or automation will help you meet your goals and gain competitiveness with lower consumption and emissions..
