Comparison of periods 1961–1990 and 1991–2020 on the chosen representative stations around Slovenia shows decrease of heating degree days by around 10 % and multiple increase of cooling degree days. With projected continuous temperature raise until the end of 21st century, those trends are expected to continue. Thus, in Slovenia, energy demand for cooling will increase in the warmer period of the year, while the energy demand for heating will decrease in colder period of the year. Same trend is projected for Europe in general.

Trends in annual precipitation are not as obvious as temperature trends. Changes between years and differences between regions are significant. According to climate change projections, annual precipitation will increase slightly while changes in seasonal precipitation will be more noticeable. Summer conditions are the most worrying, because less precipitation and higher temperature might result in higher frequency of droughts. In winter, more precipitation may lead to an increase in flooding events.

GHG emissions in industry decreased by 7,1% in 2023 compared to the previous year. Since 2019, a trend of decreasing GHG emissions has been observed in this sector, mainly due to the reduction of GHG emissions in the ETS subsector of the industry sector.

Net greenhouse gas (GHG) emissions in the land use, land use change, and forestry (LULUCF) sector amounted to -4.291 kt CO₂ eq. in 2023. In this year, net sinks were 1.7% higher compared to the previous year and 40% lower compared to 2005. According to the Slovenian Forest Service, felling in 2024 was 7% higher than in 2023. In 2024, the share of sanitary felling was around 45% of the total annual felling, which means that it has increased slightly again.

Final energy consumption in buildings amounted to 1,477 ktoe in 2023 and was 4% lower than the indicative target value from the National Energy and Climate Plan from 2020 (NECP 2020). Compared to the previous year, it remained at approximately the same level, and compared to 2005, it decreased by 23%. Greenhouse gas (GHG) emissions in buildings amounted to 1,024 kt CO₂ eq. in 2023, thus the indicative target value, which is the same in the NECP 2020 and in its update from 2024 (NECO 2024) was not achieved.