HASSLACHER Green Tower

What HASSLACHER Green Tower does

HASSLACHER Green Tower GmbH is an Austrian private limited company (FN 381634 b), headquartered in Sachsenburg, Austria, and a wholly-owned subsidiary of the family-run HASSLACHER Gruppe, a timber-engineering conglomerate with over 120 years of history, roughly 2,000 staff, and about a dozen production facilities across Europe. Its business is the development, production, sales, installation, and servicing of timber hybrid towers for utility-scale onshore wind turbines, with the core product being a spatial timber-frame structure of glued laminated timber (glulam) beams made from spruce, clad in a pine heartwood weather-protection layer, transitioning to a conventional steel tube in the upper section. Approximately 90% of tower volume is wood, and the design supports hub heights above 200 m, turbine outputs above 6 MW, and rotor diameters above 170 m.

The company holds the world's first DIBt type certification for a commercial timber tower (T-7003/22-1 Rev. 0) and its foundations, certified by TÜV NORD CERT GmbH for VENSYS 126 (3.8 MW at 136.9 m hub) and VENSYS 120 (3.0 MW at 137 m), and is extending type approvals through a co-development partnership with RE Technologies GmbH (Senvion India) targeting the 4.2M160 turbine at 170 m and 200 m hub heights. Production is carried out across HASSLACHER sites in Sachsenburg, Hermagor, Magdeburg, and Kleinheubach, with stated annual capacity of roughly 100 towers at ~160 m hub height. Revenue mechanics combine direct hardware sales (custom tower configurations, multi-year contracts) with a regional licensing model that lets qualified local producers manufacture under HASSLACHER's quality-assurance framework, and an end-of-life wood buyback program supporting a circular-economy service layer. The customer base is concentrated in European wind-turbine OEMs (notably VENSYS and Senvion) and the wind-farm project developers they serve; first commercial deployment is scheduled for 2027.

Name

HASSLACHER Green Tower

Legal name

HASSLACHER Green Tower GmbH

Website

https://hasslacher-greentower.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

HASSLACHER Green Tower GmbH develops, manufactures, and services timber hybrid towers for utility-scale onshore wind turbines, serving European wind-turbine OEMs (VENSYS, Senvion) and wind-farm project developers with type-certified, predominantly wood-based tower structures targeting 160–200 m hub heights.

Ownership category

akta.pro rank

Product category

Wind Turbine Tower Manufacturing

SIC

Millwood, Veneer, Plywood, & Structural Wood Members (2430)

akta.pro primary industry

Wind Blades, Towers & Foundations Manufacturing (EUAMACAD)

akta.pro secondary industry

Wind Blades, Towers & Foundations Manufacturing (EUAMAHAE)

Keywords

• Timber hybrid towers
• Wind turbine towers
• Glulam construction
• Onshore wind energy
• Renewable energy infrastructure

Headquarters

HQ city

Sachsenburg

HQ country

Austria

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Timber Hybrid Tower Sales: Sale of timber hybrid tower structures to wind turbine operators and project developers. Towers are competitively priced, combining 10 years of development with high prefabrication for attractive pricing. Includes buyback options at end of service life for circular economy.
2. Licensing Model: Regional licensing model allowing qualified regional companies to produce timber hybrid towers based on technical expertise and quality assurance implementation.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

HASSLACHER Green Tower GmbH develops and commercializes timber hybrid tower structures for modern wind turbines. The towers are spatial timber frame constructions made from glued laminated timber (glulam) beams of spruce with a pine heartwood weather protection layer, transitioning via a steel adapter to a conventional steel tube section in the upper portion. Approximately 90% of the tower volume is wood. The towers are engineered for hub heights exceeding 200 meters and wind turbine outputs exceeding 6 MW, and they are the world's first commercially type-certified timber tower structures (DIBt certification for VENSYS 126 and VENSYS 120 turbines).

Product overview

HASSLACHER Green Tower GmbH offers a portfolio centered on the Timber Hybrid Tower—a spatially framed wind turbine tower combining approximately 90% wood (glulam beams from spruce) with steel components. The product range includes the core type-certified tower, small-volume individual foundations, technical equipment stations for housing electrical components, installation and service support, regional licensing programs for local production, and a wood buyback program for circular economy. The towers are designed for high-capacity wind turbines (6+ MW) with hub heights exceeding 200 meters, targeting the European wind energy market through direct sales and the Senvion partnership.

Differentiator

Problem solved

Functional benefit

Products and services

• HASSLACHER Timber Hybrid Tower A spatial timber frame wind turbine tower made of glued laminated timber (glulam) beams from spruce with a pine heartwood weather protection layer; transitions via a steel adapter to a conventional steel tube section in the upper portion. Engineered for hub heights exceeding 200 m, wind turbine outputs above 6 MW, and rotor diameters beyond 170 m. Sold to wind turbine manufacturers and project developers for large-scale onshore wind farms.
• Tower Installation and Service End-to-end installation, commissioning, and after-sales service for timber hybrid towers. Includes site assembly using exclusively mechanical connections and ongoing maintenance support over the tower service life.
• Regional Licensing Program A licensing program that authorizes qualified regional companies to manufacture HASSLACHER timber hybrid towers in their own facilities under the company's technical expertise and quality assurance framework, enabling regional value creation and market expansion.
• Wood Buyback Program End-of-life buyback of wooden tower components from operators, enabling second-life structural reuse or third-life cascade material use. Closes the material cycle for circular-economy benefits and provides positive removal earnings to project owners.

Quantifiable outcome

• ~50% concrete savings vs. conventional foundations
• +4 more outcomes

Named customers1 record

Segments2 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

Two partnerships are on record, tiered core.

• RE Technologies GmbH (Senvion India)coreStrategic or Co-development Partner · 10 March 2025Partnership with RE Technologies GmbH, the global R&D organization of Senvion India, to develop innovative timber-hybrid towers for the European market. Focus on developing towers specifically designed for the 4.2M160 wind turbine with hub heights of 170 and 200 meters. Emphasizes material consumption reduction, prefabrication, and optimized logistics. CEO Werner Mussing leads HASSLACHER Green Tower; Christoph Kulterer (CEO/Owner of HASSLACHER Group) highlights commitment to timber-hybrid technology and global growth.
• SenvioncoreStrategic or Co-development Partner · 10 March 2025Senvion, through its R&D subsidiary RE Technologies GmbH, partners with HASSLACHER Green Tower for timber-hybrid tower development. Senvion's 4.2M160 wind turbine is specifically designed for integration with these towers. Partnership enables HASSLACHER to access the European wind turbine market through Senvion's established channels.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Modvion: Swedish startup developing modular wooden wind turbine towers using laminated veneer lumber. Directly comparable as a fellow developer of timber-based wind tower technology targeting the same sustainability-driven segment.
• TimberTower GmbH: Historical German pioneer in timber wind turbine towers. Conceptually the closest direct predecessor to HASSLACHER Green Tower's product, even if its current operational status is uncertain — represents the same product category HGT now leads.

Broad incumbents

• Vestas Wind Systems: World's largest wind turbine OEM, also a major manufacturer of steel wind turbine towers. Competes with HASSLACHER Green Tower for tower supply slots in onshore wind projects and represents the dominant incumbent that any sustainable tower alternative must displace.
• Enercon: Major German wind turbine manufacturer historically producing its own concrete and steel towers. Relevant as both a potential partner for timber hybrid tower integration and as a competitor in the DACH onshore wind market.
• GE Vernova: Wind turbine OEM with onshore wind tower manufacturing operations. Comparable as a potential integration partner for HGT's timber towers and as an incumbent pursuing its own low-carbon tower initiatives.
• Siemens Energy (Siemens Gamesa): Major wind turbine OEM with substantial steel/concrete tower manufacturing operations globally. Relevant as both a potential OEM customer for HGT's technology and a competitor developing its own sustainable tower solutions.
• Nordex: German wind turbine OEM with significant onshore focus and steel tower manufacturing. Comparable as a potential OEM customer and as a competitor in the European onshore wind tower supply chain.

Others

• SSAB: Swedish steel manufacturer supplying high-strength steel for conventional wind turbine towers. Adjacent/competing material supplier — its 'green steel' initiatives directly compete with HGT's sustainability positioning.
• ArcelorMittal: Global steel major supplying heavy plate steel used in conventional wind turbine towers. Comparable as an incumbent material supplier whose low-carbon steel roadmap is a competitive threat to timber-based tower sustainability claims.

Regional players

• Suzlon Energy: Indian wind turbine OEM with its own tower manufacturing. Relevant as a potential future licensee of HGT's regional licensing model and as an OEM partner for geographic expansion into the Indian wind market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/hasslachergruppe
• LinkedInlinkedin.com/company/hasslacher-green-tower
• Instagraminstagram.com/hasslacher_gruppe

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 HASSLACHER Green Tower