In 2019, renewables accounted for 16.9% of total energy consumption. The share is 0.2% higher in comparison to the previous year, only because of lower total energy consumption.

In 2012, the share of electricity generated from renewable sources in gross electricity consumption was 29.5%, which was 4.1 percentage points below the target value set for 2010. The share increased in comparison to the previous year. This is largely a consequence of higher generation of electricity from renewable sources, particularly due to higher river discharges, as gross electricity consumption was almost the same as a year earlier. In 2012, electricity generation from hydropower represented 90% of total electricity generated from RES, while its share has been in gradual decline.

Over the period 2012-2022, some energy prices increased and some decreased (in constant 2012 prices). Over the same period, the price of electricity for typical industrial consumers increased the most, by 64.4% in real terms, followed by the price of natural gas for industrial consumers, by 5.1%, and the price of fuel oil, by 3.5%. The price of natural gas for typical household consumers decreased the most, by 20.3%, followed by petrol, by 17%, then electricity for households, by 10.7%, and lastly diesel, by 1.7%.

During the period from 2012 to 2022, taxes on energy sources in Slovenia fluctuated, generally decreasing except for electricity for industrial consumers, where they increased due to levies. Between 2020 and 2022, temporary measures were introduced to reduce taxes on certain energy sources due to the COVID-19 pandemic and the war in Ukraine. Compared to the EU-27, the taxation of electricity and natural gas for households in Slovenia was lower, while it was higher for industrial consumers; diesel fuel taxation was higher, while gasoline taxation was lower.

It is estimated that in 2021, over €396 million in energy subsidies was allocated in Slovenia (or 356 € million when adjusted to constant prices in 2015). Incentives for environmentally harmful energy production from fossil fuels and the use of fossil fuels represented 26% of all energy subsidies in 2021, whereas this share was as high as 51% in 2015. Significant progress is observed in subsidizing production from renewable energy sources, CHP, and energy efficiency measures.

In Slovenia, in 2020 the external costs estimate of electricity production ranges from 0.8 - 2.8 € c2000 / kWh. Despite growing environmental awareness, the price of electricity still does not reflect all external costs. Due to incorrect price signals, which are the result of the current situation on the electricity markets, energy sources in Slovenia remain suboptimally used.

In 2021, taking into account only the production of energy from RES in Slovenia, Slovenia achieved a 24.6% share of RES in gross final energy consumption, which is 4.8 percentage points more than in 2005. To achieve a binding 25% national target share of RES under the Directive 2009/28/EC, Slovenia purchased the missing production from RES. The increase in the share of RES in 2021 is primarily the result of an increase in the use of RES in the heating and cooling sector. The share in electricity production still lags behind the planned development significantly.

Slovenia's import dependence is not decreasing and is about 50%. In 2020 it was exceptionally lower than in previous years due to the epidemiological situation. The most problematic is the import dependency on gaseous fuels, as Slovenia is heavily dependent on fuel imports from Russia.

In Slovenia, final users have at their disposal only around 73% of primary energy. In 2015 the rate reached its highest level. The efficiency of electricity and heat production is largely influenced by this share in far.

The year 2022 was exceptional for electricity production in Slovenia, as difficulties with coal supplies led to the lowest production from solid fuels since 1992, and drought also reduced production from renewable energy sources. This resulted in a record share of nuclear energy in electricity production (42%) and very low total production (13.4 TWh), the lowest since 1999. The share of domestic electricity production was 71%, below the target set in the National Energy and Climate Plan, and the annual production was 40% lower than the gross consumption.