Energy management in buildings is becoming a central element in the transition to net-zero emissions — a fact that is increasingly evident in today’s energy landscape. Emission-free buildings, which actively reduce greenhouse gas emissions, are now a critical part of the path toward a sustainable future. Through careful energy management, the use of renewable energy sources, and advanced technologies, we can significantly reduce emissions and improve the energy efficiency of buildings.

Emission-free buildings are those that virtually eliminate greenhouse gas emissions from their operations by balancing output with emission-reduction measures or by using renewable energy sources. The goal is to achieve net-zero emissions, where renewable energy production covers or exceeds the energy the building consumes.

An energy management system plays a vital role in achieving emission-free building goals. It enables efficient energy use, optimization of resources, and coordination between energy consumption and renewable energy production—contributing to responsible resource use and a reduced carbon footprint.

Energy efficiency in buildings is a fundamental component of the net-zero pathway. Buildings account for 40% of final energy consumption and 36% of energy-related greenhouse gas emissions in the EU. Reducing these emissions—through improved energy efficiency or reduced consumption—is essential for achieving climate neutrality by 2050.

There is enormous potential for improvement: around 75 % of existing buildings are energy-inefficient and will require substantial renovation.

It is essential to make buildings more energy-efficient. Implementing measures such as reducing energy consumption, using renewable energy, energy management systems, thermal insulation, energy-efficient windows, and advanced heating and cooling technologies is key. Only with this approach can we reduce energy use and associated greenhouse gas emissions.

The EU Energy Performance of Buildings Directive mandates that all new buildings must be zero-emission: starting from 2028 for public buildings and from 2030 for all new buildings. Additionally, from 2030, energy performance certificates will be mandatory for all new buildings. (European Council, 2023)

The use of renewable electricity generated onsite is a key element in achieving net-zero emissions. Solar energy is one of the most important sources in this regard.

In Slovenia, 2022 saw a significant surge in solar power installations. A record 12,231 solar power plants were commissioned—almost double the number from 2021, which saw 6,307 installations. Looking further back, the increase is even more dramatic compared to 3,961 installations in 2020. While the majority of these plants serve household self-sufficiency, their rapid growth has also increased the overall share of solar power in the national energy mix. (Varčevanje energije, 2023)

In 2022, Slovenia generated 4,308 GWh of electricity from renewable energy sources (RES), representing a 25% decrease compared to 2021. The decline was due to poor hydrological conditions, which led to a 25 % reduction in hydroelectric output. Despite this, the increase in solar power generation is encouraging, especially thanks to growing self-consumption initiatives. Solar electricity production increased by 49 % in 2022 compared to 2021. Still, hydroelectric plants remain the dominant source of renewable electricity in Slovenia. (AGEN RS, 2023)

The introduction of an incentive scheme for RES and high-efficiency cogeneration (CHP) in 2009, alongside measures to boost self-sufficiency from RES, spurred investments in solar power, biomass, and biogas—sources less dependent on weather. In contrast, solar and hydro production remain weather-dependent and can fluctuate significantly from year to year. (AGEN RS, 2023)

Buildings have evolved into active components of smart grids, allowing better energy consumption management. Smart grids enable two-way communication between buildings and the grid, allowing consumption to be adjusted in real-time. The introduction of energy storage systems (e.g., batteries) makes it possible to store surplus energy and use it during peak demand, improving energy supply reliability, reducing grid stress, and increasing renewable integration.

Implementing an energy management system (EMS) in buildings delivers a wide range of benefits, including greater energy efficiency, productivity, and adaptability to changing energy demands.

• Lower energy consumption → reduced carbon footprint.
• More energy-efficient equipment → reduced carbon footprint.
• Deployment of renewable energy sources → self-sufficiency, lower dependence on conventional external sources, and consequently a reduced carbon footprint.

• Obtaining ISO 50001 certification – a recognized international standard that helps improve corporate image and credibility among clients, partners, and stakeholders.
• Contribution to the achievement of Sustainable Development Goals (SDGs).
• Monitoring of indicators in accordance with the Greenhouse Gas (GHG) Protocol.

Implementing energy management in buildings is no longer optional—it is essential for reducing costs, meeting sustainability targets, and achieving net-zero emissions.