GRI Renewable Industries

What GRI Renewable Industries does

GRI Renewable Industries S.L. is a Madrid-headquartered manufacturer of structural components for the wind energy sector, specializing in wind turbine towers, flanges, rings, and large forged bar products for both onshore and offshore applications. Founded in 2008, the company operates 25 factories across nine countries — Spain, Argentina, Brazil, China, the United States, India, Poland, South Africa, and Turkey — with a cumulative production capacity exceeding 450,000 tons per year for flanges and related components. In 2025, GRI manufactured 1,579 towers and 319,508 tons of flanges. The company is controlled by Corporación ACEK (Riberas family), with Japanese conglomerate Mitsui & Co. holding a 25% stake acquired in 2015. Other shareholders include Holding Gonvarri S.L. and Gestamp Bizkaia S.A.

GRI operates a B2B enterprise sales model, supplying directly to wind turbine OEMs and wind farm developers through long-term contracts and key-account relationships, with no intermediary distributors. The core product portfolio consists of steel wind towers (onshore and offshore, including hybrid towers above 140 meters via Windtechnic) and flanges (via the Iraeta alliance), supplemented by acquired capabilities in large gears and yaw-system components (GRI Reducel, acquired 2023) and a 45% stake in Windtechnic Engineering for hybrid and concrete towers (March 2025). Revenue is generated through hardware sales under quote-based, project-negotiated pricing. In FY2025, sales totaled €1,014 million with EBITDA of €153 million (15% margin), a slight decline from €1,038 million in FY2024, while the company concurrently executed major capacity additions in Poland (Baltic Towers JV), Spain (Basauri, Sevilla), Turkey, and China.

The company has invested more than €1 billion cumulatively since inception, maintains ISO 14001 (over 90% of sites) and ISO 45001 (all plants) certifications, and has been rated by EcoVadis (Silver Medal in 2024, Bronze in 2025). Digital and AI initiatives include the INARI Project — automating supply chain costing, commercial standardization, and Bill of Materials generation with Catia integration — and the IoTWIND Industrial IoT platform, which provides near real-time factory visibility, predictive maintenance, and optimization analytics across the manufacturing footprint.

Name

GRI Renewable Industries

Legal name

GRI Renewable Industries S.L.

Website

https://gri.com.es

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

GRI Renewable Industries is a Spanish-headquartered global manufacturer of wind turbine components — towers, flanges, rings, and large forged bar products — operating 25 factories across nine countries. It supplies wind turbine OEMs and project developers for onshore and offshore wind projects under long-term B2B contracts.

Ownership category

akta.pro rank

Product category

Wind Turbine Components

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (3336)

SIC

Steel Pipe & Tubes (3317)

akta.pro industry

PRIMARYEUAMACAD

Wind Blades, Towers & Foundations Manufacturing

Energy, Utilities & Environment/Renewable Energy (Solar, Wind, Hydro & Geothermal)/Wind Energy (Onshore & Offshore)

SECONDARYEUAMAHAE

Wind Blades, Towers & Foundations Manufacturing

Energy, Utilities & Environment/Renewable Energy (Solar, Wind, Hydro & Geothermal)/Renewable Equipment & Component Manufacturing (Modules, Turbines, Inverters, Towers, Blades)

Keywords

• Wind turbine towers
• Wind energy components
• Wind flanges manufacturing
• Offshore wind towers
• Forged steel components

Headquarters

HQ city

Madrid

HQ country

Spain

HQ region

Europe

Offices14 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Wind Turbine Component Manufacturing: GRI generates revenue through the manufacture and sale of wind turbine components including towers, flanges, rings, and large forged bar products. The company operates on a project-based model supplying directly to wind turbine OEMs and wind farm developers. Revenue is generated through long-term supply contracts with major wind energy sector customers. In 2025, sales totaled €1,014 million with EBITDA of €153 million (15% of sales).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

GRI Renewable Industries manufactures steel wind turbine towers (onshore and offshore, including hybrid towers over 140 meters), wind turbine flanges (including offshore bottom flanges and high-tonnage offshore flanges), rings, large forged bar products, and grinding balls for mining. Through its GRI Reducel subsidiary, it also produces large gears for wind turbine yaw systems. The company serves wind turbine OEMs and wind farm developers globally from 25 factories in 9 countries.

Product overview

GRI Renewable Industries is a global leader in wind energy components with a comprehensive product portfolio centered on two core product lines: wind towers (including onshore and offshore solutions with hybrid towers exceeding 140 meters) and wind flanges. The company also offers complementary products including gears through its Reducel subsidiary, grinding balls for mining, rings, and large forged bar products. The portfolio is delivered through 25 manufacturing plants across 9 countries, serving both onshore and offshore wind projects globally. The company specializes in providing complete solutions from design through manufacturing, assembly, and distribution for the wind energy sector.

Differentiator

Problem solved

Functional benefit

Brands

• GRI Reducel: Specialized in manufacture of large parts requiring high quality standards and highly specific technological processes, particularly large gears for yaw systems in wind turbines
• GRI Torres
• GRI Bridas
• Baltic Towers
• GRI Calviño Towers Argentina

Products and services

• Wind Towers (Torres Eólicas) Steel wind turbine towers for onshore and offshore wind energy projects, including hybrid towers exceeding 140 meters via the Windtechnic engineering partnership. Used by wind turbine OEMs and wind farm developers globally and produced across GRI's 25 plants in 9 countries.
• Wind Flanges (Bridas Eólicas) Flanges for wind turbines, including large-format offshore bottom flanges and high-tonnage offshore flanges. GRI is positioned as a global leader in the flange market through its alliance with Iraeta Energy Equipment, producing over 450,000 tons/year capacity and 319,508 tons sold in 2025.
• GRI Reducel Large Gears for Wind Turbines Large-dimension gears and components for wind turbine yaw systems, manufactured by GRI Reducel (Zaragoza, Spain). Targets wind turbine OEMs requiring high-precision, large gears for nacelle yaw mechanisms.
• Grinding Balls (Bolas de Minería)

Quantifiable outcome

• TOP 35% worldwide in EcoVadis sustainability rating (Bronze Medal 2025)
• +2 more outcomes

Named customers2 records

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature2 records

Partnerships

Eight partnerships are on record, tiered core, flagship and minor.

• Windtechnic EngineeringcoreStrategic or Co-development Partner · 7 March 2025GRI acquired 45% of Windtechnic Engineering in March 2025, expanding product portfolio to include hybrid and concrete towers. This enables GRI to serve markets requiring tower heights over 140 meters, representing approximately 15% of the world market. Windtechnic has projects in Chile, Argentina, South Africa, Poland, China, Brazil, and Spain.
• Baltic Towers (Joint Venture with Polish Industrial Development Agency)flagshipStrategic or Co-development Partner · 1 January 2025Strategic joint venture with Polish Industrial Development Agency (ARP S.A.) for construction of Baltic Towers - the largest and most advanced offshore wind tower factory in Europe. Located in Gdańsk, Poland. ARP has over 30 years of experience and has invested over €4.6 billion, generating 75,000 jobs.
• GRI Reducel (Reducel SL)coreStrategic or Co-development Partner · 1 January 2023Spanish family-owned company founded in 1955, specializing in large parts requiring high quality standards and specific technological processes. Acquired by GRI in 2023, uniting industrial traditions of Riberas and Zamorano families. Specializes in large gears for yaw systems in wind turbines.
• Metalúrgica Calviño (GRI Calviño Towers Argentina)coreStrategic or Co-development Partner · 1 January 2017Argentine industrial company with over 70 years of experience in manufacturing overhead cranes and heavy equipment. Joint venture with GRI since 2017, resulting in GRI Calviño Towers Argentina headquartered in Florencio Varela (Buenos Aires). First company to mass-produce wind towers in Argentina.
• Iraeta Energy Equipment Co., Ltd.coreStrategic or Co-development Partner · 1 January 2011World leader in industrial forging sector with over 50 years of experience. Alliance began in 2011 with GRI's acquisition of FIHI factory. GRI consolidated a leading position in the global flange market through this partnership. Iraeta specializes in critical components for wind energy, nuclear, marine, mining, oil and gas sectors.
• Beyçelik Holding (Gesbey Joint Venture)coreStrategic or Co-development Partner · 1 January 2011Turkish industrial group founded in 1976, active in automotive, energy, climate control, recycling, and insurance sectors. Joint venture with GRI through Gesbey operates two onshore tower factories in the Bandırma region. Capacity increased in 2023 with a third plant added in 2025.
• EY (Ernst & Young)coreOthersIndependent external verification of GRI's Sustainability Report conducted by EY, providing assurance on sustainability disclosures and ESG metrics.
• RED.ES (Spanish Ministry of Economic Affairs)minorStrategic or Co-development PartnerGovernment body under the Ministry of Economic Affairs and Digital Transformation supporting the INARI Project through the R&D PROJECTS IN ARTIFICIAL INTELLIGENCE AND OTHER DIGITAL TECHNOLOGIES AND THEIR INTEGRATION IN NGEU VALUE CHAINS programme.

Scale indicators9 records

Recent moves10 records

Expansion highlights6 records

Broad incumbents

• Vestas Wind Systems: Global wind turbine OEM that is also a significant customer of GRI. Comparable as a wind industry leader with vertically integrated tower manufacturing, representing both the largest customer and a vertically integrating competitor.
• TPI Composites: US-based wind blade manufacturer serving global OEMs. Comparable as a Tier 1 wind component supplier with global manufacturing footprint, though focused on blades rather than towers; relevant for understanding OEM supplier dynamics.

Direct peers

• Sif Group: Dutch manufacturer of monopile foundations for offshore wind. Directly comparable in offshore wind structural component manufacturing and serves the same European offshore wind customer base as GRI's Baltic Towers.
• Bladt Industries: Danish manufacturer of offshore wind foundations and substations. Directly comparable in offshore wind structural component manufacturing serving European offshore wind developers with similar heavy steel fabrication capabilities.
• Dajin Heavy Industry: Chinese manufacturer of offshore wind foundations, monopiles, and towers. Direct competitor in offshore wind structural components with significant production capacity serving both Chinese and global OEMs, representing cost-based competitive pressure on GRI's markets.
• Smulders: Belgian manufacturer of steel foundations and offshore wind structures. Comparable as a European offshore wind structural component manufacturer serving similar OEM customers with similar production processes.
• CS Wind: South Korea-based global wind tower manufacturer with offshore capacity. Direct competitor in onshore and offshore wind tower manufacturing serving global OEMs, with comparable geographic footprint and product portfolio.
• EEW SPC: German manufacturer of monopiles and heavy steel foundations for offshore wind. Comparable in offshore wind structural component manufacturing with similar product focus and European OEM customer base.

Others

• Gestamp Wind Steel: Formerly the same entity as GRI before the 2008 spin-off. Now a sibling company under ACEK with overlapping steel manufacturing capabilities and shared industrial heritage; relevant as a closely related industrial peer within the Riberas industrial ecosystem.

Emerging players

• Iraeta Energy Equipment: Chinese forging specialist with global leadership in wind energy flanges. Partner of GRI since 2011 and supplier to similar OEM customers, comparable in flange manufacturing technology and product overlap.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/gri-renewable-industries
• Xx.com/GRIRenInd

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries8 records

Funding overview

Funding rounds1 record

Investors4 records

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 GRI Renewable Industries