Onshore Services for

Wind FarmsDevelopers, Operators, Owners, Lenders & Investors

Research & StudiesCustomers benefit from our in-depth knowledge based on UL participation in a number of state-of-the-art research projects, most notably FINO1 and RAVE – Research at Alpha VEntus, as well as our research into on-/offshore noise immission and acceptance. Visit dewi.de for a complete research reference list.

Professional Training UL offers educational training in the form of in-house or public seminars to bring newly hired or existing staff up to speed on the fundamentals of wind power technology.

DEWI Magazine Readers from over 70 countries look to the biannual DEWI Magazine for insight into the state of the wind industry. The publication includes findings from UL’s own research, as well as external articles on research and technology. All articles are available for download at ul.com/wind.

DEWEK ConferenceSince 1992, DEWEK has been world’s leading wind energy technology and research conference. All conference sessions are conducted in English and German, with simultaneous translation.

Services for Wind Farm StakeholdersOur Wind Farm & Energy Project Expertise

Anemometer Calibration

Calibrated anemometers are essential for accurate wind speed and power curve measurements, and each one must be individually calibrated prior to a measurement campaign. As an accredited service, UL offers calibration to the MEASNET standard. Wind vane testing is also advisable, and can be performed by our experts.

LiDAR Verification

Prior to measuring with a remote sensing device on a site without a measurement mast, IEC requirements specify that the LiDAR is verified against a high-quality measurement mast of suitable height equipped with calibrated cup anemometers. UL offers this service, providing traceability of the wind speed and wind direction signal.

Additional Services

• Site Classification according to IEC 61400-1 including turbulence analysis

• Acoustical noise emission measurement of wind turbines according to IEC 61400-11, 2nd and 3rd edition

• Noise estimation• Estimation of shadow flicker• Project-specific loss determination relative to:

icing, electrical design as well as curtailment aspects (acoustical, bats, sector management, etc.)

National & International Committees

UL is recognised by national and international committees as a key participant in defining wind energy standards, such as:

• IEC – International Electrotechnical Commission

• UL-AWEA – US National Standards Development

• MEASNET

• IEA – International Energy Agency

• CENELEC – Comité Européen de Normalisation Électrotechnique

• DKE – Deutsche Kommission Elektrotechnik Elektronik-Informationstechnik in DIN und VDE

• Technical Guidelines for Wind Turbines (guidelines published by FGW, Germany)

Understanding the risks and uncertainties related to wind farm projects is essential to ensuring reliable planning and efficient operation. The earlier that risk assessment of key milestones takes place, the easier it will be to avoid undesirable later developments, saving considerable costs long-term.

UL helps stakeholders – developers, investors and operators – to identify the critical aspects related to wind farm projects through comprehensive one-stop services, individually tailored and flexibly delivered.

Please note: All services are available as a complete package or individually.

Power Curve Verification (PCV)

UL offers the entire range of wind turbine power curve verification services to ensure the equipment’s performance meets IEC 61400-12-1 and MEASNET procedures:• Site assessment to determine site complexity (site calibration required or not) and define the test details including mast

location. (Note: early assessment ensures technical adequacy to the specific site)• Warranty check to analyze the contractual conditions for PCV• Site calibration for complex sites after financial close• PCV according to the current standardAlternative methods of assessing power curves using ground- or nacelle-based LiDAR are also offered by UL.

Wind Measurement (WM)

During the development of a wind farm, we guide our customers in setting up a measurement strategy that minimises uncertainty, including:• Choice of measurement location and type (mast/remote sensor)• LiDAR verification against a met mast prior to its on-site installation• Specification for the mast set-up to IEC 61400-12-1• On-site validation of the measurement installation and reporting• Measurement campaign follow-up: daily download, weekly check, monthly reporting to optimise data availability

and consistencyAdditional services include the supply of calibrated and tested instrumentation systems as well as rental LiDAR systems.

Wind Measurements (WM)

Energy Yield Assessment (EYA)

Technical Due Diligence (DD)

Power Curve Verification (PCV)

Validation of Mast Installation

WM Campaign Follow-up

Pre-Construction EYA

Site Assessment

Pre-financing Due Diligence

Contract Negotiation Financial Close

Development Phase Construction Phase

Energy Yield Assessment (EYA)

UL offers comprehensive EYA service, from large-scale wind potential determination using Mesoscale modelling to accurate assessment of the site conditions, including calculation of the expected energy yield at specific wind farms at pre-/post construction stage. The suitability of the planned wind turbine type to the site characteristics and correspondence IEC 61400-1 is checked via UL’s site classification assessment.

Pre-Construction Stage Post-Construction Stage• Site Inspection

• Wind data analysis from mast and remote sensors (SODAR/LiDAR)

• Production data analysis from SCADA data or monthly operational data

• Long-term correction of the on-site available data

• Wind flow modelling (WASP/CFD)• Wind farm efficiency calculation

• Calculation of the expected energy yield (gross p50) under consideration of systematical losses (net p50) and the respective

uncertainties and exceedance probabilities (p75, p90, p99 values)

Construction Follow-Up

Turbine Inspections before take-over

Operational Follow-Up

Post-construction EYA

(minimum 1 year of operation)

Periodic / End of Warranty Inspections

Wind FarmPerformance Analysis

Site Calibration

Power Curve Measurement

Financial Close Take-Over of the Wind Farm

Construction Phase Operation Phase

Due Diligence (DD)

Pre-Financing & Acquisition ServicesIn the course of financing or acquiring wind farms, our experts review project documentation from a technical perspective in order to identify risks:• Wind resources: third-party energy yield assessment• Documentary specifications: review of permits & contracts for

construction phase and later operations• Technical specifications: turbine technology review, electrical & civil

works design, construction schedule etc.• Finance specifications: cash-flow reviews (OPEX/CAPEX)

DD – Construction Follow-UpDuring the construction phase, our experts follow up on work at the site to identify deviations from the planned construction and investment schedule. DD – Operational Follow-UpDuring the operation phase, we perform technical inspections to assess wind farm performance (e.g. production, availability, and reasons for downtime), as well as current conditions.

TECHNICAL EXPERTISE We are globally recognized as leading experts within the wind energy industry, setting the benchmark that others aspire to.

FLEXIBILITY Our extensive service portfolio covers all of your business needs, from research and development to installation and end use.

RESPONSIVENESS Our long experience with manufacturers, project developers, owners, operators and government regulators means we can respond quickly to your specific needs.

CUSTOMER FOCUS Customers optimize opportunities for global access by leveraging our expertise and services to meet new regulatory or specific market demands.

What sets UL apart?

Global Wind Energy Measurement Services All-in-One Service Provider UL is a premier global independent safety and performance science company, with 120 years of history. Combining technical expertise with years of in-depth industry experience, UL offers global one-stop wind energy services to turbine manufacturers, component manufacturers, project developers, utilities and other companies within the sector. UL currently operates two wind test sites in Wilhelmshaven, Germany and at the West Texas A&M University near Amarillo, Texas.

Services for Wind FarmDevelopers/Operators/

Owners/Lenders/ Investors

Services forWind Turbine/

ComponentManufacturers

Energy YieldAssessment

Due DiligenceServices

Power CurveVerification

WindMeasurement

ProjectCertification(On-/Offshore)

WindTurbineTesting

ResearchStudies

Seminars

ComponentCertification(On-/Offshore)

Certification of Grid Code Compliance

TypeCertification(On-/Offshore)

UL Accreditations / Quality Agreements

The accreditations are valid for the UL locations, test and calibration procedures mentioned in the certificates. The certificates are available on request or at www.dakks.de

ul.com/wind

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