GES

Name

GES

Legal name

GLOBAL ENERGY SERVICES SIEMSA S.A.

Website

https://services-ges.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

1,001–5,000 employees

Ownership category

akta.pro rank

Product category

Renewable Energy Engineering and Construction Services

NAICS

Wind Electric Power Generation (221115), Solar Electric Power Generation (221114), Electric Bulk Power Transmission and Control (221121)

SIC

Switchgear & Switchboard Apparatus (3613), Power, Distribution & Specialty Transformers (3612)

akta.pro primary industry

Wind Farm EPC & Balance of Plant Construction (Civil, Electrical, Substations) (EUAMACAF)

akta.pro secondary industries

Renewable Energy Asset O&M (Wind, Solar, Hydro, Geothermal) (EUAEAGAB), Wind Power Plant EPC (Onshore/Offshore) (EUAEAAAF), Substations, Transformers & Grid Step-Up Facilities (EHV Substations, GSU Transformers) (EUAMAFAE), Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB)

Keywords

• Renewable energy EPC
• Wind farm construction
• Solar plant engineering
• Battery storage services
• Operations maintenance services

Headquarters

HQ city

Zamudio

HQ country

Spain

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Services: EPC contracts for renewable energy projects including wind farms, solar plants, and BESS installations. Revenue recognized upon project completion with fixed-price or cost-plus arrangements.
2. O&M Contracts: Ongoing operation and maintenance services for installed renewable energy assets, typically multi-year service agreements.
3. Repowering Services: Wind turbine modernization projects replacing older units with new, higher-capacity turbines.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

GES provides engineering, construction, and operation & maintenance services for renewable energy assets including wind farms, solar photovoltaic plants, and battery energy storage systems (BESS). The company operates two divisions — Construction (engineering, BOP, EPC solar, solar assembly, BESS, substations) and Services (O&M, wind turbine installation, repowering, major correctives, permitting). GES delivers turnkey EPC projects plus multi-year O&M contracts across Europe, EMEA, and Latin America with a track record of 400+ renewable assets built and 7,200+ wind turbines installed.

Product overview

GES – Global Energy Services is a Spanish specialist providing engineering, construction, and operational services for renewable energy assets. The company operates a two-division model: Construction (covering project development through commissioning) and Services (covering the full operational lifecycle). Under Construction, the portfolio includes Wind BOP, Solar EPC, Solar Assembly, BESS, Transmission, and Engineering. Under Services, GES offers O&M, Wind Turbine Assembly, Repowering, Major Correctives, and Permitting. The company also integrates these capabilities into hybrid project delivery combining wind, solar and storage at single sites. GES operates across Europe, EMEA and Latin America with a track record of 400+ renewable assets built and 7,200+ wind turbines installed.

Differentiator

Problem solved

Functional benefit

Products and services

• Wind BOP (Balance of Plant) Engineering and construction of wind farm balance of plant infrastructure, covering civil works, electrical infrastructure, and balance-of-plant scope for wind energy projects. Targeted at renewable energy developers and operators of utility-scale wind farms.
• Solar EPC Turnkey engineering, procurement, and construction (EPC) services for utility-scale photovoltaic solar plants, from project design through commissioning. Targeted at solar plant developers and investors.
• Solar Assembly Specialized assembly and mounting services for photovoltaic solar installations, covering structural and mechanical works for solar plants. Targeted at solar plant developers and EPC contractors.
• BESS (Battery Energy Storage Systems) Construction and integration of battery energy storage systems, enabling grid stabilization and energy management alongside wind and solar renewable assets. Targeted at renewable energy developers and utilities.
• Transmission (Substations and High Voltage Lines) Construction of electrical substations and high-voltage transmission lines for renewable energy projects, ensuring grid connection infrastructure. Targeted at renewable energy developers and grid operators.
• Engineering Project engineering services that optimize the CAPEX/OPEX balance of renewable energy assets from the earliest project stages, covering design, simulation and technical optimization. Targeted at renewable energy developers and asset owners.
• Operation & Maintenance (O&M) Ongoing operation and maintenance services for wind, solar and BESS assets, maximizing efficiency, availability and profitability throughout the asset lifecycle. Targeted at wind farm operators and solar plant owners.
• Wind Turbine Assembly Specialized wind turbine installation services, handling the mechanical and electrical assembly of turbines at project sites. Targeted at wind farm developers and turbine OEMs.
• Repowering Wind farm repowering services that replace older, lower-capacity turbines with newer, higher-capacity units, extending asset life and increasing energy yield. Targeted at operators of aging wind farms.
• Major Correctives Large-scale corrective maintenance services for renewable energy assets, addressing major component failures or structural issues in wind and solar installations. Targeted at wind farm and solar plant operators.
• Permitting Permitting and regulatory approval services for renewable energy projects, managing the administrative and legal processes required for project development and construction authorization. Targeted at renewable energy developers and investors.
• Hybrid Project Integration Integrated construction and services combining wind, solar photovoltaic and battery energy storage (BESS) at a single site, enabling multi-technology renewable energy facilities. Targeted at large-scale renewable energy developers.

Quantifiable outcome

• 100% on-time project delivery
• +2 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered core.

• Envision EnergycoreStrategic or Co-development Partner · 27 February 2026GES partnered with Envision Energy to expand two-blade turbine installations across Europe. Envision developed a two-blade wind turbine design after years of R&D to address high production and transportation costs of conventional three-blade turbines. GES brings its construction and O&M expertise to support deployment of this innovative technology, positioning it as a potential new industry standard.
• TECNALIAcoreStrategic or Co-development PartnerGES and TECNALIA developed the ITACA research project to advance toward a data-driven, prescriptive solar maintenance model. The project aims to assess and characterize the condition of solar photovoltaic assets, enabling failure anticipation, production loss estimation, and optimal maintenance strategy prescription.
• CL Grupo IndustrialcoreOthersGES is part of CL Grupo Industrial, a Spanish industrial group composed of 27 companies sharing a culture of innovation, opportunity, and recognition. The group operates in Spain and 10 other countries.

Scale indicators8 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Acciona Energía: Spanish global renewable energy developer, operator and EPC contractor with wind and solar projects across multiple continents. Acciona Energía is a direct competitor to GES in Spanish and LATAM renewable EPC markets and also operates as a developer/owner that hires EPC contractors.
• Siemens Energy (Wind / Gamesa): Global wind turbine OEM and service provider through Siemens Gamesa, offering integrated EPC, commissioning and O&M services worldwide. Direct competitor for wind O&M contracts and hybrid project delivery, with the scale advantage of being a turbine OEM.
• Cobra (ACS Group / VINCI): Major Spanish EPC contractor (now part of VINCI) with extensive renewable energy construction portfolio in wind, solar and transmission. Cobra is one of the largest competitors to GES in Spanish and LATAM renewable EPC and substation/transmission construction.
• Vestas Wind Systems: Global wind turbine OEM with one of the largest wind O&M service businesses in the world (Service segment). Competes with GES for wind O&M contracts, particularly for fleets where Vestas has the OEM relationship; broader scope than GES due to equipment manufacturing.
• Enel Green Power: Global renewable energy developer and operator with significant wind, solar and storage projects across Europe, LATAM and globally. Enel Green Power is both a potential customer for GES's EPC services and a competitor when it in-houses construction capabilities.
• Iberdrola Renovables (Iberdrola Energía Renovable): Spanish global utility with one of the world's largest renewable energy portfolios in wind, solar and storage. Iberdrola is both a key potential customer of GES for EPC and O&M services and a competitor that can internalize construction capabilities at scale.

Direct peers

• Elecnor: Spanish infrastructure and energy EPC contractor with substantial renewable energy (wind, solar, BESS) and electrical transmission/substation construction business. Elecnor is the closest direct peer to GES in Iberian renewable EPC services and competes on similar projects in Spain and LATAM.
• TSK: Spanish EPC contractor specializing in energy infrastructure including renewable power plants, substations and industrial facilities. TSK directly competes with GES in wind/solar EPC and electrical infrastructure construction across Spain and international markets.
• Mortenson Construction: Major US-based EPC contractor specializing in wind and solar energy construction, with significant repowering experience. Mortenson is the closest US analogue to GES in utility-scale wind/solar EPC services and a comparable pure-play renewable construction specialist.

Regional players

• SENER Grupo de Ingeniería: Spanish engineering and technology group with renewable energy, power and infrastructure capabilities including wind and solar project engineering. SENER competes with GES in engineering and project development for renewable energy, primarily in Spain and other Spanish-speaking markets.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@GESSIEMSA
• LinkedInlinkedin.com/company/services-ges

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 GES