The ELES Group

is actively involved in the operation, management and strategic development of the Slovenian, wider regional and European electricity environment.

The activities of our companies range from

  • electricity transmission and trading support,
  • energy-efficient and flexible production of aluminium and aluminium products,
  • the development of information and communications technologies supporting the digitisation of electricity,
  • offering smart operating solutions to power system operators.
When it comes to business and development, the ELES Group cooperates with stakeholders in both Slovenia and the wider European and international environment. We manage the challenges of the future electricity supply efficiently.
Synergies are an integral part of both our day-to-day business and long-term strategies of individual companies and the group as a whole. Our business is ambitious and sustainably oriented. Therefore, we create value for our key stakeholders both in the short and long term.

“We are connecting energy systems and users”

Aleksander Mervar, MSc,
CEO of ELES d.o.o.
Aleksander Mervar, MSc

“By developing power exchange trading, we are making the energy market more transparent.”

Anže Predovnik, MSc,
CEO of BSP Energetska borza d.o.o.
Anže Predovnik, MSc

“We are co-creating the future with aluminium.”

Marko Drobnič,
Management Board Chair of TALUM d.d.
Marko Drobnič

“We provide top-class ICT services to business users.”

Igor Maher,
CEO of Stelkom d.o.o.
Igor Maher

“We are offering smart operating solutions to TSOs.”

Andrej Souvent, MSc,,
CEO of Operato d.o.o.
Andrej Souvent, MSc,

ELES Group – key performance indicators(data for 2020)

Business operations

Net sales:
EUR 426.7 million
Net profit/loss for the year:
EUR 16.6 million
Operating profit/loss (EBIT):
EUR 17.3 million
Net profit before amortisation, tax and interest (EBITDA):
EUR 68.5 million
EUR 381.3 million
Total assets:
EUR 869.0 million


EUR 105.1 million


Number of employees as at  on 31st of December 2020:

The data apply to the ELES Group, which consists of the controlling company ELES d.o.o., and its subsidiaries TALUM d.d. and Stelkom d.o.o.
BSP d.o.o. is a jointly controlled company for which we do not perform full consolidation, but rather apply the equity method.

Our Role in the Energy Sector

The ELES Group is helping develop the Slovenian, regional and European electricity ecosystem, while our industrial activities also have a global reach. Our activities are indispensable for a reliable electricity supply.

Key synergies and cooperation projects between ELES Group companies

Key synergies and cooperation projects between ELES Group companies


Custom-made auctions

We conduct custom-made auctions for the purchase of electricity in order to:

  • cover losses in the transmission network, and
  • perform tertiary frequency control.

Integration of power exchange markets

We run projects aimed at integration of the Slovenian power exchange market into a single European electricity market in the following segments:

  • day-ahead trading (at all borders of the Slovenian electricity system);
  • intraday trading (XBID project – developing technologies and procedures for the implementation of a single intraday market coupling).


Adapting the consumption

We manage our electricity consumption dynamically by:

  • responding to electricity grid demands and contributing to the stability of the transmission system;
  • supporting ELES as the transmission network system operator in case electricity flows need to be balanced due to grid instabilities.

FutureFlow Project

We participated in the pilot tests for demonstrating that prosumers can deliver high quality and flexibility services to the TSOs. An international research project was coordinated by ELES.

ELES – Stelkom

Synergies of the electricity and telecommunications networks

We recognise and strengthen the synergies of the electricity and telecommunications networks – Stelkom’s extensive optical network comprises three thousand kilometres of optical cables installed in lightning conductors, wrapped around the phase conductor of power lines, hung on power lines or in underground ducts.

NEDO Project

We take part in the Slovenian-Japanese partnership – the NEDO research project, the largest infrastructure smart grid project in Slovenia, which is managed and coordinated by ELES.

ELES – Operato

Smart solutions

We are offering fully indirect DTR system – SUMO, which dynamically calculates the thermal ratings of power lines and transformers, thus optimizes the transmission capacities and improves the security of operation.

Stelkom – TALUM

Telecommunications solutions

Stelkom provides TALUM with comprehensive telecommunications solutions. Together, we have introduced a modern, Windows OS-based 3CX IP system that works in a virtual environment.


Purchase auctions

For TALUM’s demand, we conduct custom-made electricity purchase auctions.

The ELES Group creates value in the following strategic areas

Operation, management and development of the electric power system
Society and environment
Business economics
Knowledge and innovations

Geographical presence of The ELES Group

See more