Windtest

What Windtest does

windtest grevenbroich gmbh is a German accredited measurement and testing services company founded in 1996, headquartered in Grevenbroich, North Rhine-Westphalia. It operates the Neurather Höhe inland wind turbine test field (active since June 1998) and serves the wind energy value chain with services spanning site evaluation, energy assessment, prototyping and type testing, grid integration and power quality, and remote-sensing device verification. Its service portfolio covers wind potential measurement, yield reports, shadow and noise immission projections, power performance measurement (IEC 61400-12), load measurement, noise emission measurement (IEC 61400-11), grid compatibility/FGW-conformity testing including fault ride-through, and SoDAR/LiDAR verification, alongside professional training seminars.

The company is accredited by DAkkS to ISO/IEC 17025:2018, accepted by IECRE in four areas (Power Performance, Load Measurement, Acoustic/Noise Emission, Electrical Characteristics), is a full MEASNET member, and serves as a designated measuring agency for sound measurements under §26 BimSchG in 15 German federal states. It is the only test laboratory worldwide holding four IECRE-accepted competencies and operates what it describes as the world's largest inland wind turbine test field, capable of testing turbines from 5 kW to 5,500 kW. Ownership rests with NRW.BANK (for the State of North Rhine-Westphalia), RWE Renewables Europe & Australia GmbH, Rhein-Kreis Neuss, and SEG GmbH, with Monika Krämer as Managing Director and CEO and Chairwoman of MEASNET since 2010.

Windtest generates revenue from professional engineering and consulting engagements priced on a quote basis, delivered through direct enterprise sales to wind turbine manufacturers (e.g., ENERCON, Siemens Gamesa, Nordex, VENSYS, Suzlon), wind farm operators and investors (e.g., RWE, juwi, GP JOULE), authorities and planning bodies, banks and fund managers, and developers of storage and photovoltaic assets. It markets through industry trade shows (WindEnergy Hamburg, WindEurope, Branchentag Windenergie NRW), technical training seminars, its corporate website, and active participation in standards bodies (BWE, FGW, MEASNET, VGB PowerTech). Customer-facing delivery is global, with a North American subsidiary (windtest north-america, Estherville, US) in operation since 2014.

Name

Windtest

Legal name

windtest grevenbroich gmbh

Website

https://windtest-nrw.de

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

windtest grevenbroich gmbh is an ISO 17025-, IECRE-, and MEASNET-accredited German laboratory operating the world's largest inland wind turbine test field, delivering type testing, power performance, load, noise, grid integration, and remote-sensing verification services to OEMs, operators, investors, and authorities worldwide.

Ownership category

akta.pro rank

Product category

Wind Energy Testing & Measurement Services

NAICS

Testing Laboratories and Services (54138), Testing Laboratories and Services (541380)

SIC

Services-Testing Laboratories (8734), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Third-Party Certification, Code Compliance & Regulatory Inspection (ASME/API/ISO) (EUAEAHAN)

akta.pro secondary industries

Wind Resource Assessment & Energy Yield Analytics (Met Masts, LiDAR, Modeling) (EUAMACAJ), Grid Code & Compliance Testing (IEEE/UL, FRT, Reactive Power, Harmonics) (EUAMAIAC), Rotating Equipment Inspection & Vibration Diagnostics (Turbines, Compressors, Pumps) (EUAEAHAJ)

Keywords

• Wind turbine testing
• Power performance measurement
• Load measurement services
• Grid integration testing
• Remote sensing verification

Headquarters

HQ city

Grevenbroich

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Consulting Services: Accredited engineering services including site assessments, technical due diligence, power performance measurements, load measurements, noise measurements, grid compatibility testing, and certification support for wind energy systems.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

windtest grevenbroich gmbh is an accredited measurement and testing services provider for the wind energy industry, operating the world's largest inland wind turbine test field since 1998. The company delivers site evaluation (wind potential measurement, yield reports, shadow and noise immission projections), prototype testing (power performance, load and noise emission measurements), grid integration and power quality testing (including fault ride-through), and verification of remote sensing devices (SoDAR/LiDAR), all under DAkkS ISO/IEC 17025 accreditation with IECRE acceptance in four areas and MEASNET membership.

Product overview

Windtest Grevenbroich GmbH is an accredited measurement and testing services company for the wind energy industry, operating since 1996. The company offers a comprehensive portfolio organized around four core service areas: Energy Assessment/Site Evaluation (including wind potential measurement, yield reports, shadow and noise projections, and remote sensing validation), Prototyping + Testing (power performance, load, and noise emission measurements), Grid Integration + Power Quality (electrical characteristics and FRT testing), and a dedicated Test Site Grevenbroich facility for inland wind turbine testing. The company also provides professional training services. Services are delivered by accredited laboratories according to ISO/IEC 17025, IECRE, and international standards (IEC, FGW, MEASNET).

Differentiator

Problem solved

Functional benefit

Products and services

• Site Evaluation / Energy Assessment Comprehensive assessment services for wind energy project planning, including wind potential measurement, yield reporting, shadow impact projections, and noise immission projections, intended for investors, operators and authorities to support site decisions and permits.
• Power Performance Measurement Accredited measurement of wind turbine power curves according to IEC 61400-12, FGW directive TR2 and MEASNET procedures to determine energy yield and validate turbine efficiency.
• Load Measurement Accredited mechanical load measurements on wind turbines and components per IEC TS 61400-13, IEC 61400-22, GL 2010 and IEC 61400-2, supporting type certification of wind turbines.
• Noise Emission Measurement Sound emission measurements for wind turbines according to IEC 61400-11 and FGW Technical Directive Part 1, including structure-borne sound measurements, delivered as a designated measuring agency service.
• Grid Integration + Power Quality Measurement of electrical characteristics including Fault Ride-Through (FRT), output characteristics, flicker, harmonics and voltage changes per FGW Technical Directive Parts 3 and 4 or IEC 61400-21, with FGW conformity seal and ISO/IEC 17025 accreditation.
• Test Site Grevenbroich The company's inland test field for wind energy systems, in operation since 1998, providing infrastructure for testing wind turbine prototypes from 5 kW to 5,500 kW with IEC-compliant measurement equipment including a 134 m met mast.
• Verification Services for Remote Sensing Devices (SoDAR/LiDAR) Calibrated verification of SoDAR and LiDAR remote sensing devices at the Grevenbroich test field, with setup and validation compliant to IEC 61400-12-1 ed. 2; over 100 verifications completed since 2014.
• Training Services Professional seminars on IEC and FGW standards covering power quality, grid integration, load measurement, power performance, noise/acoustics, site assessment, wind measurement and technical inspection.
• Yield Report Bankable annual energy yield report based on wind potential measurements using Wind Atlas Method, CFD software (WindSim), WAsP and WindPro, delivered to comply with FGW TR6.
• Shadow Impact Projections Simulation of rotor shadow effects on surrounding buildings and areas, calculating shadow duration per day and per year for regulatory compliance of wind farm permits.
• Noise Immission Projections Sound propagation calculations for construction permits, determining immission levels at adjacent buildings based on acoustic power levels and environmental factors.

Quantifiable outcome

• Over 100 remote sensing devices (LiDAR/SoDAR) verified since 2014
• +2 more outcomes

Named customers10 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

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• GWU Umwelttechnik GmbHcoreStrategic or Co-development PartnerCooperation partner for environmental technology services. Joint milestone achieved with 150th LiDAR verification at windtest's verification station.
• WIND-consultminorStrategic or Co-development PartnerIngenieurgesellschaft für umweltschonende Energiewandlung mbH - cooperation partner in wind energy consulting
• zdi-Netzwerk Rhein-Kreis NeussminorStrategic or Co-development PartnerNetwork for promoting STEM education (MINT) in the Rhein-Kreis Neuss region
• DesignkomplexminorOthersAssociated company providing design services
• Lorenz KommunikationminorOthersAssociated company providing communication services
• MEASNETcoreStrategic or Co-development PartnerFull member of MEASNET international network. CEO Monika Krämer serves as Chairwoman since 2010. Cooperates in creation of international directives and intercomparison programmes.
• BWE - Bundesverband WindEnergie e.V.minorStrategic or Co-development PartnerGerman Wind Energy Association membership for industry networking and standards development
• FGW e.V.coreStrategic or Co-development PartnerTechnical Association for Wind Energy - member with participation in Technical Committee for Grid Compatibility and Grid Connection (Fachausschuss Netzverträglichkeit und Netzanschluss), Technical Committee for Wind Potential (Fachausschuss Windpotential), and Expert Group for Site assessment
• VGB PowerTech e.V.minorStrategic or Co-development PartnerInternational technical association for power generation - membership for industry collaboration

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• DNV: Global assurance and risk management company with deep wind energy type testing, certification, and energy yield advisory services. DNV is the dominant incumbent in wind certification and overlaps directly with Windtest's IEC type testing and load measurement offerings, though DNV serves a much broader industrial portfolio.
• TÜV SÜD: Global testing, inspection, and certification (TIC) company with wind energy service offerings including type certification, grid integration, and condition monitoring. TÜV SÜD is a broader portfolio incumbent that competes with Windtest on international wind certification work.
• TÜV Rheinland: Major German-origin TIC company offering wind turbine certification, grid code compliance testing, and energy yield assessments. Competes with Windtest across certification and grid integration services, with a much larger international footprint.
• Bureau Veritas: Global TIC company with a wind energy service line covering type certification, power curve measurement, and project due diligence. Overlaps with Windtest's testing and certification services, particularly for international OEMs and developers.
• SGS: Swiss-based global TIC giant with wind energy measurement and inspection capabilities. SGS competes with Windtest on technical due diligence, yield assessment, and increasingly on grid integration testing for international wind projects.
• Intertek: Global TIC provider offering wind turbine testing, performance verification, and grid compliance services. Intertek's broader international footprint and bundled service portfolio overlap with Windtest's enterprise testing engagements.

Direct peers

• UL Solutions (formerly DEWI/UL DEWI): UL Solutions acquired DEWI, one of the original German wind energy measurement institutes. UL competes directly with Windtest in power performance measurement, load measurement, and wind resource assessment, sharing similar MEASNET-style credentials and European customer base.
• Fraunhofer IWES: German applied research institute specializing in wind energy testing, measurement, and component certification. IWES operates dedicated test infrastructure and competes with Windtest on prototype testing, load measurement, and grid integration R&D services.

Emerging players

• RES (now part of WSP): WSP, following its acquisition of RES, offers wind resource assessment, energy yield forecasting, and due diligence services. Overlaps with Windtest's site evaluation and yield report offerings for developers, banks, and investors.
• Vortex: Wind resource assessment and energy yield forecasting firm serving project developers and banks. Vortex competes with Windtest in yield analytics and CFD modeling but lacks physical testing infrastructure.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/windtest-grevenbroich

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Windtest