ELIA GROUP

Overview

Elia Group is an electricity transmission and energy infrastructure group whose core business is building, operating and maintaining high- and extra-high-voltage grids through its Belgian and German transmission system operators. Its activities also include offshore wind-grid connections, offshore development, and international engineering and consultancy services.[1][2]

The group describes its purpose as helping drive the energy transition by making electricity accessible, reliable and affordable. Its central operating markets are Belgium and Germany, while its engineering and consultancy business serves clients internationally.[1][3]

For scale, Elia reported 2025 revenue of €4.44 billion and a global workforce of more than 4,500. Its electricity infrastructure serves about 30 million end users.[4]+2 [1]+6

Products & services

Elia Group’s main services are high-voltage transmission and electricity-system operation through Elia Transmission Belgium and 50Hertz in Germany. These include connecting customers to the grid, developing and maintaining transmission infrastructure, managing system operation, and providing connection studies; access and connection tariffs are regulated.[6][7] The Belgian business also facilitates energy-market integration, publishes market data, and manages interconnector capacity allocations with neighboring transmission operators.[6]

For balancing and system services, Elia activates ancillary services when a balance-responsible party is out of balance and charges that party under the applicable regulated mechanism. Its published balancing-market products include FCR, aFRR and mFRR capacity and bids.[6]+3

The group’s infrastructure projects illustrate specific grid capabilities. Ostwind 3 is designed to collect about 300 MW from the Windanker offshore wind farm, transform it to 220 kV and transmit it over approximately 100 km of submarine and onshore cable.[11] In Belgium, a 92-km upgrade to the 380 kV backbone was reported to enable up to three times more electricity transfer on the line.[12] Outside regulated grid operations, re.alto manages a marketplace for exchanging energy data and services, while Elia Grid International offers power-system planning, infrastructure design and owner’s engineering.[2][13]

The FY2025 annual report does not provide revenue or performance percentages by individual product or service category.[2] [6]+8

Geographic presence

Elia Group’s core grid operations are in Belgium and Germany. In 2025, Elia Transmission Belgium and Elia Asset operated Belgium’s high- and extra-high-voltage transmission system, while 50Hertz operated the extra-high-voltage grid in northern and eastern Germany. 50Hertz Offshore also develops and maintains offshore wind connections, primarily in the Baltic Sea.[2] Elia has a 50% stake in Nemo Link, which operates the Belgium–UK electricity interconnector.[14]

The 2025 report gives segment revenue and other income of €1,603.9 million for Belgium and €2,720.9 million for 50Hertz Germany, but does not provide a country-by-country revenue breakdown or geographic revenue percentages.[15] Subsidiaries listed in the report have headquarters in Belgium, Germany, Luxembourg, Saudi Arabia, Canada and the United States; these indicate corporate presence and should not be taken as evidence of transmission-grid operations in every country.[16]

Elia reported 4,572 employees at year-end 2025, but the available employee breakdown is not by country or region.[17] [2]+4

Business segments

For FY2025, Elia Group reported three operating segments: Elia Transmission, covering regulated transmission activities in Belgium; 50Hertz Transmission, covering regulated activities in Germany; and the Non-regulated segment and Nemo Link, which includes Nemo Link, non-regulated activities—mainly re.alto, EGI, WindGrid and energyRe Giga—and holding-company operating costs.[18]+4

By segment revenue, Elia Transmission contributed approximately 36% (€1,608.2 million), 50Hertz Transmission 64% (€2,824.0 million), and the Non-regulated segment and Nemo Link 2% (€80.3 million) of group revenue of €4,442.2 million. The segment figures are before €70.3 million of consolidation and intersegment eliminations.[23] On an EBITDA basis, the respective contributions were approximately 38% (€684.8 million), 64% (€1,147.6 million), and −2% (a loss of €38.2 million) of consolidated EBITDA of €1,794.5 million.[23] [23]+8

Company history

Elia’s origins date to 2001, when the Belgian transmission system operator was established. Its shares began trading on Euronext Brussels in 2005, marking a step in the company’s development as a listed group.[24][25]

A major expansion came in 2010, when Elia joined IFM to acquire German transmission operator 50Hertz, taking a 60% stake and operational control. In 2018, Elia acquired a further 20% interest in 50Hertz’s holding company, Eurogrid; KfW later took a 20% stake on behalf of the German federal government.[26]+2

The group completed an internal reorganisation in 2019, with Elia System Operator renamed Elia Group. That year, the Nemo Link Belgium–UK interconnector, developed jointly with National Grid, began commercial operation. In 2020, the ALEGrO interconnector entered commercial operation, establishing a direct electricity link between Belgium and Germany.[29][30] [24]+6

Sources

• ELIA GROUP — Press release (2026 Q 1)
  3 citations

  [1][11][12]
• ELIA GROUP — Full financial report (2025 Y)
  8 citations

  [2][4][6][7][14][15][16][17]
• jobs.eliagroup.eu[3]
• investor.eliagroup.eu[5]
• opendata.elia.be[8]
• opendata.elia.be[9]
• opendata.elia.be[10]
• eliagrid-int.com[13]
• ELIA GROUP — Press release (2025 Y)
  6 citations

  [18][19][20][21][22][23]
• jobs.eliagroup.eu[24]
• bib.kuleuven.be[25]
• group.vattenfall.com[26]
• elia.be[27]
• www.kfw.de[28]
• investor.eliagroup.eu[29]
• investor.eliagroup.eu[30]