Interenergo Group

What Interenergo Group does

Interenergo Group, operating under the unified commercial brand Kelag International, is the international renewable energy arm of the Austrian Kelag Group. The company invests in, constructs, and manages renewable energy generation facilities across solar, wind, and hydro technologies, and operates an electricity trading business on more than 15 European wholesale exchanges. It complements physical generation and trading with energy solutions including energy contracting, power purchase agreements (PPAs), and Guarantees of Origin (GOO). The company is actively present in 14 European markets spanning the Iberian, Mediterranean, and South-East Europe regions, with local operating entities in Austria, Slovenia, Serbia, Croatia, Bosnia & Herzegovina, North Macedonia, Montenegro, Kosovo, Italy, France, Spain, and Portugal. Operational headquarters sit in Klagenfurt, Austria; Interenergo Group itself is headquartered in Ljubljana, Slovenia.

The go-to-market is enterprise-focused direct B2B sales, targeting six primary customer segments: Developers, Land Owners, Power Producers, RES Investors, Industrial enterprises, and Public Sector organizations. Revenue derives from three streams: (1) renewable energy production sales to wholesale markets and through PPAs, characterized as recurring subscription-like income; (2) short and long-term electricity trading across European wholesale markets, characterized as transaction-fee income; and (3) energy solutions services including contracting, PPAs, and Guarantees of Origin, also characterized as recurring. Pricing is custom and not publicly disclosed, consistent with project-based and PPA-structured deals. The named customer base visible in the source material is limited to Elan (manufacturing) and a secondary school in Kranj, suggesting case studies rather than a complete customer roster.

Interenergo Group is a privately held subsidiary of the Austrian Kelag Group, a strategic operating parent founded in 1923 that maintains more than 1,400 MW of total rated production capacity and celebrated its centennial in 2023. No patents, certifications, external funding rounds, management bios, or revenue figures for Interenergo Group are disclosed in the source material, and no AI or proprietary software capabilities are referenced. The company appears to be in active operating status with ongoing expansion activity, most visibly in the Italian renewable power plant portfolio and via a recent rebranding consolidating multiple legacy entities under a single Kelag International brand.

Name

Interenergo Group

Legal name

Kelag International

Website

https://interenergo.si

Company type

Private

Operating status

Operating

Headcount range

51–100 employees

Short description

Interenergo Group, operating as Kelag International, is the international renewable energy subsidiary of Austria's Kelag Group. It develops and operates solar, wind, and hydro facilities across 14 European markets, trades electricity on 15+ wholesale exchanges, and delivers PPAs and guarantees of origin to enterprise and public sector clients.

Ownership category

akta.pro rank

Product category

Renewable Energy Services

NAICS

Wind Electric Power Generation (221115), Hydroelectric Power Generation (221111), Solar Electric Power Generation (221114), Electric Power Generation, Transmission and Distribution (2211)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Wind Power Plant EPC (Onshore/Offshore) (EUAEAAAF)

akta.pro secondary industries

Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB), Wind Balance-of-Plant EPC (Crane Pads, Turbine Foundations, Internal Roads) (EUAEADAI), Renewable Energy Infrastructure (FSAAAKAG)

Keywords

• Renewable energy services
• Energy trading
• Power purchase agreements
• Solar wind hydro generation
• Energy contracting

Headquarters

HQ city

Klagenfurt

HQ country

Austria

HQ region

Europe

Offices12 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Operations, Supply Chain, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Renewable Energy Production: Generation and sale of electricity from owned renewable energy facilities including solar, wind, and hydro power plants. Revenue derived from energy sales to wholesale markets and through PPAs.
2. Energy Trading: Short and long-term electricity trading across European wholesale markets. Trading on more than 15 energy exchanges.
3. Energy Solutions Services: Energy contracting, power purchase agreements (PPAs), and guarantees of origin (GOO) for industrial and public sector clients.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Interenergo Group (operating as Kelag International) invests in, constructs, and operates renewable energy generation facilities including solar, wind, and hydro power plants across 14 European markets. It complements generation with cross-border short- and long-term electricity trading on 15+ European wholesale markets, and provides energy solutions to industry and public-sector clients through energy contracting, power purchase agreements (PPAs), and guarantees of origin (GOO).

Product overview

Kelag International operates as a unified brand for European renewable energy partnerships, offering an integrated portfolio of energy solutions. The core offerings include Renewable Energy Solutions (Solar, Wind, Hydro facilities), Energy Trading across 15+ European wholesale markets, and Energy Solutions comprising Energy Contracting, Power Purchase Agreements (PPA), and Guarantees of Origin (GOO). These are delivered through specialized solution verticals targeting Developers, Land Owners, Power Producers, RES Investors, Industry, and Public Sector clients across 14 European markets in the Iberian, Mediterranean, and South-East Europe regions.

Differentiator

Problem solved

Functional benefit

Products and services

• Renewable Energy Solutions

Quantifiable outcome

• GWh of renewable energy production in a standard year (specific figure not disclosed)
• +1 more outcomes

Named customers2 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• ElancoreStrategic or Co-development PartnerLong-term partnership began in 2018 with renovation of lighting in one of Elan's production halls. Successfully completed eight energy-efficient projects to date. Partnership demonstrates company's ability to deliver ongoing energy efficiency improvements for industrial clients.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Akuo Energy: Independent French renewable energy developer and IPP with multi-technology (solar, wind, storage) portfolio across Europe and overseas. Comparable mid-sized IPP pursuing similar value chain integration.
• Encavis AG: German-listed IPP operating solar and wind parks across Europe with a similar decentralized European footprint. Comparable as a multi-technology renewable operator monetizing generation via PPAs and wholesale markets.
• Eolus Vind: Swedish wind power developer and operator with established European project pipeline. Comparable as a focused wind/solar developer monetizing projects through PPAs and merchant offtake across multiple European markets.
• Statkraft: Norwegian state-owned renewable energy generator and Europe's largest generator of renewable energy. Comparable multi-technology portfolio (hydro, wind, solar) plus large-scale European energy trading operations.
• VERBUND AG: Austrian integrated utility and leading European hydropower operator also active in wind and solar. Comparable as a multi-technology renewable producer with cross-border European generation and trading operations.
• BayWa r.e. Global renewable energy developer, trader, and IPP with strong European project development, energy trading, and PPA origination. Directly comparable across Interenergo's integrated value chain from development to trading.

Emerging players

• Pexapark: European PPA pricing and risk management platform serving renewable energy developers and offtakers. Adjacent comparator for Interenergo's energy trading and PPA structuring capabilities.

Broad incumbents

• Iberdrola Renovables: Global renewable energy major with deep Iberian presence and expanding into Mediterranean markets. Competes with Interenergo for large-scale Iberian PPAs and green certificates.
• RWE Renewables: One of Europe's largest renewable energy operators (wind, solar, hydro, biomass) with major presence in Iberia, Mediterranean, and SEE. Competes with Interenergo in many of the same markets but at significantly larger scale.
• EDP Renováveis: One of the world's largest wind and solar developers with strong Iberian/Mediterranean footprint and aggressive European expansion. Broad incumbent competing for the same corporate PPA and developer partnerships.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/interenergo-doo

Revenue estimate

Valuation estimate

Number of profiles

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 Interenergo Group