What Monge Group does

Monge Group (legal entity: Talleres Electromecánicos Monge S.L., operating under the holding name Grupo Monge) is a privately held Spanish industrial services company founded in 1939 in León. It specializes in the repair and maintenance of rotating electrical machinery — electric motors, alternators, transformers, wind turbine generators, and hydraulic pumps — delivered as predictive, preventive, and corrective maintenance either on customer sites or in company workshops. The technical offering is anchored by a specialized diagnostic and test infrastructure that includes ETP transformer testing, SFRA sweep-frequency response analysis, vibration analysis, dynamic balancing machines, laser alignment, VPI varnishing tanks, infrared thermography, and test benches homologated by major electrical manufacturers; an in-house Saqr-ATEX INERIS qualification also allows work on rotating machines in explosive atmospheres.

The company operates three work centers (over 2,500 m² in León and over 3,000 m² across two Gijón facilities) with a fixed team of 80 employees, and runs a mobile field-service fleet covering Spain and Portugal with 24/7 availability for critical industrial equipment. Its go-to-market is enterprise B2B field sales into four primary verticals — industrial manufacturing, wind energy, electrical power generation, and railway — with over 1,000 customers served and more than 200 wind turbine interventions per year. The revenue model is custom-quoted professional services with no public pricing, structured under a holding with wholly owned operating subsidiaries (TEM León, TEM Gijón, TEM Service Monge Formación for vocational training, and TEM Energía).

Certifications and homologations are central to the business model: ISO 9001 (quality, valid to 2026-06-06), ISO 14001 (environment, valid to 2026-06-06), ISO 45001:2018 (occupational health and safety), Saqr-ATEX INERIS 16ER0007 (explosive atmospheres), Global Wind Organization WINDA training, and factory-homologated status as an official Siemens repairer. The firm also received a 2021 subsidy from Spain's Instituto para la Transición Justa for a new industrial coil-manufacturing plant, signaling upstream extension from repair into component manufacturing. Ownership appears to remain with the founding Monge family (Mª Teresa Monge Garrido listed as Data Protection Officer), with no institutional investors, public listing, or external funding rounds identified.

Name

Monge Group

Legal name

TALLERES ELECTROMECANICOS MONGE S.L.

Website

https://talleresmonge.com

Company type

Private

Founded year

1939

Operating status

Operating

Headcount range

51–100 employees

Short description

Monge Group is a family-owned Spanish industrial services firm founded in 1939 that repairs and maintains rotating electrical machinery — motors, alternators, transformers, wind turbines, and hydraulic pumps — for enterprise customers across Spain and Portugal through on-site and workshop operations.

Ownership category

akta.pro rank

Product category

Industrial Electromechanical Repair and Maintenance Services

NAICS

Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance (8113), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Pump and Compressor Manufacturing (33391), Mechanical Power Transmission Equipment Manufacturing (333613)

SIC

Motors & Generators (3621), Engines & Turbines (3510), Pumps & Pumping Equipment (3561), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Rotating Equipment Maintenance (Turbines, Generators, Motors, Pumps, Compressors) (EUAEAGAI)

Keywords

• Industrial machinery repair
• Electromechanical maintenance services
• Electric motor repair
• Transformer maintenance services
• Wind turbine maintenance

Headquarters

HQ city

Carbajal De La Legua

HQ country

Spain

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Industrial Machinery Repair and Maintenance: Core revenue stream from repair and maintenance of industrial electrical machinery including motors, alternadores, transformers, aerogeneradores, and hydraulic pumps. Services offered on-site at customer facilities or in company workshops. Includes predictive, preventive, and corrective maintenance services.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Monge Group delivers industrial electromechanical repair and maintenance services for rotating machinery (electric motors, alternators, hydraulic pumps), transformers (dry, distribution, power, oil/silicone bath, traction for rail), and wind turbines. Services are provided both on-site at customer facilities via a mobile service fleet and in dedicated workshops, covering predictive, preventive, and corrective maintenance for industrial customers across Spain and Portugal.

Product overview

Monge Group is a holding company consisting of TEM León, TEM Gijón, TEM Service Monge Formación, and TEM Energía, offering a unified portfolio of industrial electromechanical repair and maintenance services. The core offering centers on the repair and maintenance of rotating machinery (electric motors, alternators, hydraulic pumps) and transformers, complemented by specialized wind turbine maintenance services. Services are delivered through three facilities in León (over 2,500 m²) and Gijón (over 3,000 m² across two buildings), with a mobile service fleet covering Spain and Portugal. The company also operates a professional training center offering vocational courses in mechanical manufacturing and electrical installation. All services follow internal specifications developed over 80+ years of experience and are supported by predictive, preventive, and corrective maintenance capabilities.

Differentiator

Problem solved

Functional benefit

Brands

• TEM León: Operating subsidiary based in León, Spain, specializing in industrial machinery repair services.
• TEM Gijón
• TEM Service Monge Formación
• TEM Energía

Products and services

• Motor Repair and Maintenance Services Predictive and corrective maintenance and repair of electric motors of any power and configuration (standard, squirrel cage, wound rotor, fans, agitators, submersible pumps) for any industrial installation, including low voltage, medium voltage, and direct current motors.
• Alternator Repair and Maintenance Services Maintenance and repair services for all types of alternators including cogeneration, hydraulic, conventional, and turbogenerators, including predictive maintenance, corrective maintenance, and rewinding.
• Transformer Repair and Maintenance Services Comprehensive maintenance and repair of industrial transformers including dry, distribution, power, oil and silicone bath transformers, traction transformers for trains, and reactors, including rewinding services using reverse engineering.
• Wind Turbine (Aerogenerador) Maintenance Services Predictive, preventive, and corrective Up-Tower maintenance services for wind turbines of any power and manufacturer (Siemens, Indar, Weier, ABB, Cantarey, Loher, Winergy), including electrical testing, vibration analysis, in-situ balancing, laser alignment, bearing replacement, rotor cable repair, and slip ring replacement.
• Hydraulic Pump Repair and Maintenance Services Maintenance and repair of flow and pressure hydraulic pumps, including predictive and preventive maintenance, bronze bushing manufacturing, shaft-rotor balancing, bearing and packing replacement, and complete mechanical rehabilitation.
• Industrial Predictive Maintenance Services Predictive maintenance that forecasts machine failures by analyzing behavior, including insulation analysis, EDA insulation tests, tangent delta tests, shock wave tests, partial discharge tests, resistance measurements, hipot tests, vibration analysis, infrared thermography, network analyzers, power transformer tests (ETP), transformer SFRA tests, and oil analysis.
• Industrial Preventive Maintenance Services Preventive maintenance services following predictive analysis to perform electrical and mechanical maintenance tasks that prevent functional failures, including dynamic balancing, laser alignment, bearing changes, magnetic core induction testing, and oil reconditioning.
• Industrial Corrective Maintenance Services Corrective maintenance intervention on machines after a fault has occurred, including in-situ repairs or workshop repairs at company facilities with post-repair testing to verify quality.
• Professional Training Center Services Vocational training registered with Castilla y León since May 2018, covering mechanical manufacturing operations and low voltage electrical installation assembly and maintenance.

Quantifiable outcome

• More than 200 wind turbine repair interventions per year
• +2 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core and minor.

• SiemenscoreTechnology or IntegrationMonge Group is an officially homologated Siemens repairer, authorized to perform maintenance and repair on Siemens industrial equipment including rotating machinery.
• Global Wind Organization (GWO)coreStrategic or Co-development PartnerMonge Group holds WINDA Delegate Training certification, enabling their personnel to work on wind turbines at customer sites following GWO safety standards.
• Instituto para la Transición JustaminorOthersReceived subsidy from the Institute for Just Transition for the project 'Nueva Planta Industrial para la Fabricación de Bobinas' (expediente 2021-M105) under the economic reactivation program for coal mining areas.
• Wind Turbine Manufacturers (Siemens, Indar, Weier, ABB, Cantarey, Loher, Winergy)coreTechnology or IntegrationMonge Group performs maintenance and repair on wind turbines from various manufacturers including Siemens, Indar, Weier, ABB, Cantarey, Loher, and Winergy, demonstrating broad technical compatibility.

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• IMESAPI: Spanish industrial maintenance and electromechanical services provider offering rotating-equipment repair, predictive maintenance, and field services across Iberia — directly comparable in scope, customer mix, and delivery model to Monge Group.
• SPIE España: Spanish arm of SPIE, a European multi-technical services group providing industrial maintenance, electrical, and mechanical services to industrial and energy clients — overlaps directly with Monge's motor, transformer, and rotating-machinery MRO offering in Iberia.
• Cotronic (Grupo Cotronic): Spanish industrial services firm focused on electrical machinery repair and maintenance, including motors, transformers, and rotating equipment for industrial customers — operates in the same niche as Monge with comparable workshop-plus-field delivery.

Broad incumbents

• Siemens Energy Service: OEM service division of Siemens Energy offering field service, repair, and overhaul of generators, motors, and transformers — competes with Monge for high-end rotating-equipment and transformer work but at significantly larger scale and global reach.
• Hitachi Energy (Transformer Service): OEM service business providing transformer lifecycle services, repair, and field engineering — directly comparable to Monge's transformer repair line and competing for the same utility and industrial customers.
• Vinci Energies España (Infratek, Omexom): Industrial services arm of the VINCI group with Spanish operations covering electrical infrastructure, rotating equipment, and energy-sector maintenance — competes for the same industrial and utility customers but from a much broader, multi-country portfolio.
• Siemens Gamesa (Wind Service): OEM wind turbine service provider with a large installed base in Iberia; competes with Monge for wind-turbine Up-Tower repair and maintenance contracts on Siemens-Gamesa fleets and sets the price/standard OEMs can internalize.
• ABB Service (Motion & Electrification): Global OEM service organization offering motor and generator repair, retrofits, and condition monitoring — competes directly for the same motor/alternator repair opportunities Monge addresses, and is itself one of Monge's OEM partners.
• Vestas Service (Iberia): Wind OEM service organization operating across Spain and Portugal with its own service fleet and digital monitoring — competes with Monge for O&M contracts on Vestas-installed turbines and represents a structural alternative to independent providers like Monge.

Emerging players

• Elytt Energy: Spanish specialist in transformer manufacturing and repair, including power and distribution transformers — partial overlap with Monge's transformer maintenance line and a comparable Iberian footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/MongeTalleres
• Facebookfacebook.com/TalleresElectromecanicosMonge

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries4 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 Monge Group