Although electricity and heat generation increased by 30% between 1990 and 2021, CO2 emissions decreased by 31.5%, mainly due to the increase in generation efficiency, as well as to the increase in RES and nuclear generation. SO2 emissions decreased by almost 99%, mainly due to the installation of desulphurisation, the increase in generation efficiency and share of RES and nuclear generation.

In 2022, EU-27 net GHG emissions decreased by 1.7% compared to 2021 and was 32% lower than 1990. In 2022, Slovenian GHG emissions decreased by 2.9% compared to 2021. Emissions from non-ETS sectors were as much as 3.5% higher than in 2021, but 9.4% lower than in 2005.

Water protection areas (WPA) cover 17.4% of Slovenia's territory. The land use structure in water protection areas is dominated by forest (62.1 %), followed by grassland (13.5 %) and arable land (10.5 %). The amount of built-up land in the water protection areas is increasing, while a decrease in arable land and an increase in the share of organically farmed land indicate positive changes in the direction of extensification of land use.

Primary energy consumption amounted to 6,470 ktoe in 2021 and increased by 2.7 % compared to the previous year. The increase was a result of an increase in the final energy consumption due to the economic recovery after the coronavirus pandemic and a colder year 2021, while the electricity production decreased compared to the previous year. Primary energy consumption was 258 ktoe (3.8%) lower than the indicative target value for 2021 from the currrent National Energy and Climate Plan (NECP), while it slightly lagged behind the annual indicative target from the proposal for the NECP update.

In 2021, the energy reduction in the energy efficiency obligation scheme (energy amounted to 610.4 GWh. A bigger share of the savings, 57%, was achieved through the implementation of energy efficiency (EE) and renewable energy source (RES) measures within the Eco Fund programs. The annual target value was exceeded by a third. For 2022, according to preliminary data, the achieved energy savings are estimated at 700.8 GWh, which is 15% more than the previous year and 53% above the target value.