Isotron

What Isotron does

Isotron is a Spanish electrical engineering, instrumentation and control contractor and wholly-owned subsidiary of the ISASTUR industrial group, headquartered in Llanera (Asturias), Spain, and operating since 1989. The company delivers turnkey engineering, procurement and construction (EPC) services for high and very high voltage substations (up to 800 kV), overhead and underground power lines (up to 400 kV), wind farms (over 2,500 MW installed), photovoltaic plants (over 1,500–3,000 MW installed), fossil fuel and cogeneration/thermal/biomass power stations, oil & gas refinery electrification, desalination and water treatment plants, and industrial automation projects. Its core technology platform centers on proprietary ACATIVE control equipment and in-house developed control and supervision software used for industrial process automation and SCADA-type applications.

Isotron serves enterprise clients across renewable energy developers (Vestas, ENGIE, EDPR, Iberdrola, Acciona, E.ON, Gamesa), transmission system operators (Red Eléctrica de España, Transelec/SAESA, L'ONEE, SONELGAZ), oil & gas majors (Repsol, CEPSA, BP Oil), heavy industry (ArcelorMittal, DuPont, Ford) and water utilities (INIMA, Aqualia). Revenue is generated through project-based EPC contracts, balance-of-plant (BOP/BOS) services for generation facilities, long-term predictive/preventive/corrective maintenance agreements, and facility management contracts — all delivered directly through 18 wholly-owned subsidiaries across Europe, Latin America, North Africa and the Middle East. The business model is fundamentally a services-and-capex-heavy EPC contractor with repeat enterprise clients, no software/SaaS component, and no disclosed pricing.

The parent ISASTUR group structure means Isotron is privately held with no public listing, no disclosed funding rounds, and no disclosed revenue figures. Operations span 18 countries with established entities and the group maintains ISO 9001, ISO 14001, ISO 45001, EMAS, UNE 19601 and UNE 19602 certifications covering quality, environment, occupational health & safety, and compliance.

Name

Isotron

Legal name

INGENIERÍA Y SUMINISTROS ASTURIAS, S.A. (ISASTUR)

Website

https://isastur.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Isotron is a Spain-based EPC contractor (subsidiary of ISASTUR group) delivering turnkey electrical engineering, substations up to 800 kV, renewable energy plants, and industrial automation for enterprise utilities, energy developers, and heavy industry clients across 18 countries.

Ownership category

akta.pro rank

Product category

Industrial Electrical Engineering and EPC Services

NAICS

Electrical Equipment Manufacturing (3353), Relay and Industrial Control Manufacturing (335314), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Electrical Equipment, Appliance, and Component Manufacturing (335), All Other Electrical Equipment and Component Manufacturing (33599)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Electrical Industrial Apparatus (3620), Electronic & Other Electrical Equipment (No Computer Equip) (3600), Miscellaneous Electrical Machinery, Equipment & Supplies (3690)

akta.pro primary industry

Power Plant I&C / SCADA / DCS EPC (EUAEAAAN)

akta.pro secondary industries

Substation & Interconnection EPC (Collector/POI Substations, Switchyards) (EUAEADAC), Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB), Power Plant Electrical Systems EPC (Switchyard, Transformers, Protection & Controls) (EUAEAAAM), Underground Distribution (Cable, Duct Bank & Vault) EPC (EUAEACAB), FACTS / Reactive Power & Power Quality Systems EPC (SVC/STATCOM, Capacitor Banks) (EUAEABAE)

Keywords

• Electrical engineering services
• EPC turnkey projects
• Substation construction
• Renewable energy construction
• Industrial automation systems

Headquarters

HQ city

Llanera

HQ country

Spain

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. EPC / Turnkey Projects: Engineering, procurement and construction contracts for electrical installations, substations, power lines, renewable energy plants (wind, photovoltaic, solar thermal, biomass), and industrial facilities. Full project delivery from design through commissioning.
2. Electromechanical Assembly Services: Electrical and mechanical installation, instrumentation, and commissioning services for power plants, refineries, desalination plants, and industrial facilities.
3. Operation and Maintenance: Ongoing maintenance services for electrical infrastructure including predictive, preventive, and corrective maintenance for substations, wind farms, and industrial facilities.
4. Engineering Services: Detailed engineering for electrical installations including high/very high voltage substations, medium/low voltage distribution, generation plant design, and industrial automation.
5. Facility Management: Integrated facility management services including technical maintenance, energy management, auxiliary services, and project management for buildings and industrial facilities.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Isotron designs, supplies, executes and commissions electrical installations, instrumentation and control systems for power generation, transmission, renewable energy, petrochemical, and industrial facilities. The company delivers projects through EPC/turnkey contracts, electromechanical assembly, BOP/BOS services, and predictive/preventive/corrective maintenance, supported by proprietary ACATIVE control equipment and in-house supervision software.

Product overview

ISOTRON is a subsidiary of ISASTUR group providing electrical, instrumentation and control services primarily for the energy sector. The company operates as a multi-product service provider offering core competencies in electrical installations and automation, complemented by specialized services across renewable energy (wind farms, photovoltaic plants, biomass, cogeneration), power transmission infrastructure (substations, power lines), oil & gas facilities, and water treatment plants. ISOTRON delivers projects through various modalities including full EPC/turnkey contracts, BOP/BOS services, and maintenance services. The company has international operations across Europe, the Americas, and North Africa.

Differentiator

Problem solved

Functional benefit

Products and services

• Electrical and Instrumentation Services

Quantifiable outcome

• Over 2,500 MW of wind power installed for major energy companies
• +2 more outcomes

Named customers20 records

Segments6 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered minor.

• Strategic Alliances in Water SectorminorStrategic or Co-development PartnerStrategic alliances in water sector providing experience from projects in Spain, Morocco, Egypt, Chile, Algeria and other countries for water treatment and desalination projects.
• Leading Engineering Companies (Petrochemical)minorStrategic or Co-development PartnerWorks with leading engineering companies in petrochemical sector including Foster Wheeler, Technip, Intecsa, Fluor Daniel, TécnicasReunidas for project execution.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Sener: Spanish engineering and technology group with energy, renewables, and infrastructure EPC capabilities. Comparable to ISOTRON in high-voltage and renewable EPC and in providing proprietary engineering know-how to utility and developer clients.
• Ingeteam: Spanish manufacturer and EPC provider of electrical equipment, generators, and automation systems for wind, solar, hydro, and substations. Comparable to ISOTRON's renewable EPC and proprietary automation (ACATIVE) positioning, with overlap in industrial automation and renewable BoP services.
• Elecnor: Spanish infrastructure and electrical EPC group executing concessions, substations, renewable energy, and telecom projects internationally. Closest direct comparable to ISOTRON in terms of Iberian base, end-to-end EPC delivery model, and renewable/substation core.
• Abengoa: Spanish engineering and infrastructure group historically active in transmission, renewables, and water EPC. Comparable to ISOTRON in end-market mix and scale, though currently restructured; useful as a historical reference for the Spanish EPC peer set.
• Cobra (ACS Group): Spanish infrastructure EPC arm of ACS Group executing transmission, substations, and renewable energy projects worldwide. Comparable to ISOTRON in renewable BoP, HV substation, and grid EPC, with overlapping utility customer base in Spain and LatAm.
• TSK: Spanish EPC contractor specialized in energy plants (combined cycle, renewables, biomass) and industrial facilities. Directly comparable to ISOTRON in project scale, customer overlap with utilities and renewable developers, and turnkey electrical/mechanical execution model.

Broad incumbents

• Schneider Electric: Global electrical equipment, automation, and energy management company. Overlaps with ISOTRON's industrial automation and electrical distribution scope across substations and process industries, but with a much broader product portfolio and recurring software/services model.
• Hitachi Energy: Global provider of substations, HVDC systems, and grid automation products and services. Directly competes with ISOTRON on HV/EHV substation turnkey projects (the ISOTRON 800 kV capability competes with Hitachi's GIS/Hybrid offerings) but with broader global footprint and OEM supply chain.
• GE Vernova: Global power generation and grid solutions business spun from GE. Comparable to ISOTRON on combined-cycle, renewable, and grid infrastructure EPC; competes for utility EPC awards but with equipment-OEM bundling and substantially larger financial scale.
• Siemens Energy: Global OEM and EPC provider for power generation, transmission, and renewable energy. Overlaps with ISOTRON on HV substations, grid technology, and wind/PV project execution, but operates at vastly larger scale and as an equipment OEM rather than pure-play EPC.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/ISASTUR

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries16 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 Isotron