Annual rank30
Spain · Industrials
Arteche Lantegi Elkartea
Makes measurement, monitoring, automation and reliability systems for electricity transmission and distribution networks.
FY2022–FY2025
FY2022–FY2025
FY2022–FY2025
current context only
Company profile
Measurement, automation and grid reliability from product to project
Arteche is a Basque electrical-equipment group serving the path from generation to the final grid user. It combines conventional and optical instrument transformers, medium-voltage sensors, relays and IEC 61850 automation with engineering, commissioning and training. Its grid-reliability work adds harmonic filters, capacitor banks, reclosers and flywheel storage, linking decades of measurement hardware to renewable integration, digital substations and critical power quality.
Products and technology
From 800 kV transformers to sampled values over fibre
Conventional high-voltage designs cover current, voltage, combined, oil-paper and gas-insulated transformers up to 800 kV. The passive SDO-OCT instead measures current optically without oil or gas, can handle AC or DC and feeds an SDO-MU. That merging unit converts the optical signal into IEC 61850 Sampled Values with precision-time synchronisation and redundant communications, bringing measurement directly into a digital-substation process bus.
- High-voltage instrument transformers Current, voltage, combined, gas-insulated and optical designs up to 800 kV
- SDO-OCT optical transformer Passive optical measurement, solid insulation, AC or DC and no oil or gas
- SDO-MU merging unit IEC 61850 Sampled Values, time synchronisation and redundant communications
- ▶ VideoWatch: optical current measurement Official English explanation of protection and metering applications
Applications and customers
The same stack reaches substations, solar plants and wind farms
At Acciona's Puerto Libertad solar project in Mexico, saTECH automation connected plant substations to CENACE and the site SCADA, while smARTop capacitor banks supported grid-code work. At Brazos Repower in Fluvanna, Texas, Arteche supplied two 31 MVAr Type-C filters at 138 kV. At Statkraft's 55.2 MWp Talayuela II plant in Cáceres, PQ-Switch mitigates capacitor-bank switching transients.
- Substation automation systems saTECH devices, panels, integration, engineering, commissioning and support
- Puerto Libertad solar substations Acciona, CENACE integration, IEC 61850, saTECH and smARTop in Mexico
- Brazos Repower wind farm Two 31 MVAr Type-C harmonic filters at 138 kV in Texas
- Talayuela II solar plant PQ-Switch transient mitigation for Statkraft in Cáceres
- ▶ VideoWatch: substation automation Official English tour of engineering, panels, testing and commissioning
Footprint and operating model
Local engineering and testing sit inside a four-continent network
Arteche says customers in more than 175 countries are served through over 80 technical-commercial offices. Its company directory reaches from Mungia and Vitoria-Gasteiz to Tepeji del Río, Curitiba, Dalian, Cikarang and Eveleigh. Seven R&D centres focus on digital monitoring, asset management, cybersecurity, direct current and harmonics. In Tepeji, a 19,000 m² capacity expansion includes production buildings and a high-voltage impulse laboratory that can reproduce transients up to 2,800 kV.
- Meet the Arteche group Customer-country reach, technical-commercial offices and operating model
- Global company directory Named companies and addresses across Europe, the Americas, Asia and Oceania
- Innovation network Seven R&D centres and priorities from digital twins to direct current
- Tepeji laboratory and expansion Mexican production capacity and high-voltage impulse testing for North America
Strategy and growth
Expansion adds sensing, protection and fast grid support
The 2024–2026 plan targets new geographies, technologies and market segments. Arteche's recent moves include 100% of RTR Energía for power quality, 35% of Uptech Sensing for distributed fibre-optic monitoring, 100% of Germany's SEG for medium-voltage protection relays and a minority stake in Finland's Teraloop. Teraloop's flywheel system pairs magnetic-levitation, hubless storage with power electronics for sub-10-millisecond response in frequency and voltage support.
- Strategic Plan 2024–2026 The issuer's roadmap across business lines and geographies
- Uptech, RTR and Teraloop English issuer filing covering sensing, power quality and storage moves
- SEG Electronics acquisition Medium-voltage protection relays, DACH reach and data-centre applications
- Teraloop flywheel storage Grid stability, frequency control, voltage support and response time
- ▶ VideoWatch: flywheel energy storage Official English explanation of fast grid balancing with Teraloop FESS
Official profile sources: Arteche: 75 Years of History Working Towards a More Innovative, Sustainable and International Future · Products and solutions — Arteche
Current 2026 update
What is changing at Arteche Lantegi Elkartea in 2026?
Arteche is expanding three parts of the grid-equipment stack at once: manufacturing and HVDC testing, protection and optical sensing, and fast grid-reliability products for data centres, hydrogen projects and distribution networks.
The change in one sentence
Measurement and Monitoring capacity, digital control and fast grid support are expanding together.
Mungia is open while Dalian is under construction; SEG and minority-owned Uptech broaden protection and sensing; flywheel and recloser orders are growing, but integration and deployment evidence remain limited.
Four lenses on 2026
The same four-quadrant format used in the Company profile.
01 · Factory and testing
Mungia opens while the Dalian factory remains under construction
Arteche reports a 20% capacity increase within Measurement and Monitoring, shortening lead times for its most constrained product lines. It opened a Mungia plant for capacitive and optical measurement transformers and began building a new high-voltage instrument-transformer factory in Dalian, China; no production-start date is disclosed for Dalian. Arteche also upgraded Mungia's Ultra High Voltage Laboratory to carry out specific direct-current tests for HVDC projects, without disclosing test volumes or customers.
- Current signal+20% Measurement and Monitoring capacity · Mungia open · Dalian building
- Why it mattersArteche reports shorter lead times already while adding manufacturing, regional proximity and specialised testing; the China production ramp and further lead-time gains remain to be evidenced.
- H1 capacity, automation and reliability update Arteche · 2026-07-28
- Dalian factory construction Arteche · 2026-04-30
02 · Protection and sensing
SEG relays and Uptech sensing move Arteche deeper into automation
Arteche acquired 100% of German relay maker SEG, which brings medium-voltage protection products, more than 350 customers, a German production site and commercial hubs in the United States, Poland and the Middle East. The acquisition was valued at EUR 50.6 million and is intended to strengthen DACH and data-centre reach; Arteche discloses no realised cross-selling or integration synergy. Separately, its 35% stake in Uptech Sensing adds distributed fibre-optic sensing and smart infrastructure monitoring without making Uptech a wholly controlled business.
- Current signalSEG 100% · EUR 50.6m · Uptech 35%
- Why it mattersProtection relays and distributed sensing extend Arteche from measurement toward monitoring and control, while commercial integration remains an open test.
- H1 capacity, automation and reliability update Arteche · 2026-07-28
- SEG protection-relay acquisition Arteche · 2026-06-12
- Uptech optical-sensing stake Arteche · 2026-03-18
03 · Grid reliability
Data-centre flywheel orders and Brazil recloser frameworks lift Grid Reliability
Arteche says Grid Reliability order intake rose 21.4%, driven by green-hydrogen projects, data-centre solutions using flywheels and framework agreements for reclosers in Brazil that strengthened backlog for H2. Its Teraloop flywheel page says the system can deliver full nominal power in under 10 milliseconds and maintain output for dozens of minutes. The 21.4% is order-intake growth; the response and duration figures are product specifications, not measured project results. Arteche names no data-centre customer, commissioned flywheel deployment or delivered Brazil volume.
- Current signal+21.4% Grid Reliability orders · sub-10ms product response
- Why it mattersFast storage and recloser frameworks can broaden the reliability business, but named deployment and backlog conversion remain the operating proof.
- H1 capacity, automation and reliability update Arteche · 2026-07-28
- Teraloop flywheel capability Arteche · undated
04 · What to watch
Three questions for the next disclosures
Three questions track whether factories, acquired capabilities and Grid Reliability orders become operating scale.
- Factory rampWhen does Dalian start production, and do constrained product lead times continue to shorten after Mungia's expansion?
- Automation integrationDoes Arteche disclose SEG and Uptech cross-selling, integrated products or named data-centre wins?
- Reliability deploymentDo flywheel, green-hydrogen and Brazil recloser orders become named deployments, deliveries or repeat frameworks?
Annual record
Ranking history
Future editions add rows; they do not rewrite the 2026 record.
| Edition | Measurement period | Rank | Revenue growth | Net-income growth | Stock return |
|---|---|---|---|---|---|
| 2026 | FY2022–FY2025 | 30 | +47% | +489% | +509% |