Jožef Stefan Institute, Energy Efficiency Centre

What Jožef Stefan Institute, Energy Efficiency Centre does

The Energy Efficiency Centre (CEU) is a research and consulting unit within the Jožef Stefan Institute, Slovenia's largest public research institution, established in March 1994 and operating from Dol pri Ljubljani with a postal address at the Jožef Stefan Institute main campus in Ljubljana. The center delivers strategic energy planning, energy efficiency analysis, renewable energy integration, climate and air emissions analysis, and professional training for Slovenian ministries, municipalities, and industrial enterprises. CEU functions as a key expert partner for Slovenia's Ministry of Environment, Climate and Energy and the Ministry of Infrastructure in preparing national energy and climate strategic documents, and participates in a portfolio of over 50 active international (LIFE, H2020, Interreg) and national projects, including flagship engagements such as LIFE IP CARE4CLIMATE, REHEATEAST, GreenRenoV8, and Project MIRROR.

CEU's technology stack centers on complex model tools for energy consumption and emissions projection (including the LEAP — Long-range Energy Alternatives Planning System), GIS-based spatial analysis, and the proprietary Heat Map (Toplotna karta) methodology for heat consumption analysis and district heating supply planning. The center operates the EUREM (European Energy Manager) international training program, which has produced over 200 certified energy managers in Slovenia and runs an annual international conference (11th edition scheduled for June 2026). CEU's commercial offering includes bespoke energy audits, carbon footprint calculations, energy management system design, and strategic energy planning delivered to enterprise clients across banking (NLB, SDH), telecommunications (Telekom Slovenije), retail (IKEA Slovenija, BTC), infrastructure (DARS, Luka Koper), and energy (ELES) sectors.

The business model is a mix of government expert-support contracts with Slovenian ministries, EU-funded research project grants (LIFE, Horizon Europe, Interreg, ECF), industry consulting for energy audits and carbon footprint work, and training/conference fees (300 EUR + VAT per EUREM attendee). CEU is led by Stane Merše (Head of Centre since 2008), with Gašper Stegnar coordinating the GreenRenoV8 project. The center does not publish revenue figures, operates as part of a public research institution rather than a privately owned commercial entity, and has no external investment, M&A activity, or patents disclosed.

Name

Jožef Stefan Institute, Energy Efficiency Centre

Legal name

Institut 'Jožef Stefan' (Center za energetsko učinkovitost)

Website

https://ceu.ijs.si

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Short description

The Energy Efficiency Centre (CEU) is a research and consulting unit within the Jožef Stefan Institute in Slovenia that provides strategic energy planning, emissions analysis, and EU project consulting to Slovenian ministries, municipalities, and industrial enterprises, and operates the EUREM Energy Manager training program.

Ownership category

akta.pro rank

Product category

Energy Efficiency Consulting

NAICS

Administration of Environmental Quality Programs (924), Administration of Conservation Programs (92412)

SIC

Electric & Other Services Combined (4931), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Renewable Portfolio Standards (RPS) & Clean Energy Standards Compliance (EUAMANAF)

akta.pro secondary industry

Energy, Utilities & Sustainability Management (BPABAAAF)

Keywords

• Energy efficiency consulting
• Climate policy research
• Renewable energy planning
• Energy audit services
• GHG emissions analysis

Headquarters

HQ city

Ljubljana

HQ country

Slovenia

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Government consulting and policy support: Expert support services to Slovenian Ministries for preparation of strategic and action documents in energy climate policy
2. EU-funded research projects: Active participation in numerous European projects (LIFE, H2020, Interreg, etc.) providing funding for research and implementation activities
3. Training programs and conferences: EUREM international training for energy managers; organizes conferences with registration fees (300 EUR + VAT for EUREM conference)
4. Industry consulting services: Energy audits, carbon footprint calculations, strategic energy planning for private companies

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

The Energy Efficiency Centre (CEU) is a research and consultancy unit within the Jožef Stefan Institute providing strategic energy planning, energy efficiency analysis, renewable energy integration, climate and air emissions analysis, carbon footprint calculations, energy audits, and professional training. The Centre supports Slovenian ministries, municipalities, and industrial clients in developing and monitoring strategic energy and climate documents and implements numerous EU-funded projects (LIFE, H2020, Interreg). It also delivers the EUREM European Energy Manager training program, which has produced over 200 certified energy managers in Slovenia.

Product overview

The Energy Efficiency Centre (CEU) operates as a research and consultancy unit of the Jožef Stefan Institute, offering a portfolio of energy efficiency services rather than a unified software product. Its core offering is strategic energy planning and policy support for government ministries, local communities, and industry clients. The Centre provides specialized services including the Heat Map (Toplotna karta) GIS-based spatial analytics tool for heat consumption assessment and spatial planning, the EUREM (European Energy Manager) international training program with over 200 certified graduates in Slovenia and annual conferences, and project-based consulting in energy efficiency, renewable energy, climate analysis, and district heating. The EUREM training program is delivered as a structured educational module, while the Heat Map represents a standalone analytical tool. The remaining services are delivered as bespoke consultancy engagements across international and national projects.

Differentiator

Problem solved

Functional benefit

Products and services

• EUREM (European Energy Manager) Training

Quantifiable outcome

• Heat loss reduction of approximately 10% achievable through digitalization and operational optimization in district heating systems
• +1 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Four partnerships are on record, tiered major, minor and core.

• Slovenski regionalni razvojni sklad (SRRS)majorStrategic or Co-development Partner · 1 January 2026Joint events on circular economy and New European Bauhaus projects within LIFE IP CARE4CLIMATE project, providing financing opportunities information.
• Lokalna energetska agencija PomurjeminorStrategic or Co-development Partner · 1 January 2026Collaboration on online training materials for district heating experts and policy makers.
• Interreg Danube / European CommissioncoreStrategic or Co-development Partner · 1 January 2024REHEATEAST project focusing on sustainable transformation of district heating systems in Eastern Danube region countries with 11 pilot projects.
• Ministrstvo za okolje, podnebje in energijo (MOPE)coreStrategic or Co-development PartnerGovernment ministry leading LIFE IP CARE4CLIMATE project with CEU as key implementation partner for building renovation and energy efficiency activities.

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Carbon Trust: UK-headquartered sustainability consultancy certifying energy efficiency, providing carbon footprint and policy advisory — commercially analogous to CEU's enterprise-facing emissions and energy management work, though much larger and privately funded.
• ECN part of TNO (Energy Transition): Dutch applied-research organisation (formerly ECN) with energy transition, biomass, and district heating research, integrated into national policy advisory — closely analogous in serving as a government-affiliated energy research backbone for the Netherlands.
• ADEME (Agence de la transition écologique): France's national environmental and energy efficiency agency operating under ministries to deliver policy support, training, audits, and emissions analysis — the public-agency equivalent of CEU's policy-support mandate at a much larger national scale.
• VTT Technical Research Centre of Finland: Finland's publicly-owned applied research organisation with a substantial energy efficiency, climate mitigation, and district heating portfolio serving the Finnish government and EU institutions — broader in scale but operating on an analogous public-research-and-policy model.

Direct peers

• Fraunhofer Institute for Systems and Innovation Research (ISI): German applied-research institute conducting energy systems analysis, energy policy consulting, and scenario modeling for federal ministries — directly comparable to CEU as a publicly-funded energy research + policy unit serving national government clients across the EU.
• Regional Centre for Energy Policy Research (REKK): Hungarian energy economics research centre working on EU-aligned energy policy analysis, climate scenarios, and energy efficiency advisory to government — comparable in size, public-affiliated status, and Danube-region mandate.
• e-think energy research: Austrian energy economics and policy research centre providing model-based energy scenario analysis, renewable integration studies, and energy efficiency consulting to ministries and EU clients — most direct regional peer to CEU's scope.
• Stockholm Environment Institute (SEI): Independent research organisation providing policy-relevant analysis on climate, energy, and sustainable development for governments and EU bodies — comparable to CEU in its policy-adjacent applied research and emissions modelling remit.

Emerging players

• Energy Cities: European network of municipalities advancing local energy transition, with which CEU partners via REHEATEAST — overlapping client base (municipalities) and similar mandate to accelerate district heating and renewable deployment at the local level.
• EcoAct (an ENGIE Impact company): International climate consulting firm offering carbon footprint calculation, net zero strategy, and policy advisory — overlaps with CEU's enterprise-facing carbon footprint and energy audit offerings, but operates commercially rather than as a public research unit.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ijs-ceu

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Jožef Stefan Institute, Energy Efficiency Centre