Measure and manage wind farm risks.

Understanding the risks and uncertainties related to wind farm projects is essential to helping ensure reliable planning and efficient operation. The earlier a risk assessment of key milestones takes place, the easier it is to help avoid costly, undesirable developments later.

UL helps stakeholders – developers, investors and operators – to identify the critical aspects related to wind farm projects. We do this through a comprehensive offering of complete services, including site assessments and planning, power measurements, equipment checks and due diligence, all tailored and flexibly delivered to meet each customer’s needs.

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, and equipped with calibrated cup anemometers. UL offers this service, providing traceability of the wind speed and wind direction signal.

Wind Measurement (WM)
During the development of a wind farm, we guide our customers in setting up a measurement strategy that minimizes 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 setup 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 optimize data availability and consistency

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 helps ensure 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 standard

Alternative methods of assessing power curves using ground- or nacelle-based LiDAR are also offered by UL.

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-/post­construction stage. The suitability of the planned wind turbine type to the site characteristics and correspondence to the IEC 61400-1 norm is checked via UL’s site classification assessment.

Due Diligence (DD)

Pre-Financing & Acquisition Services
In 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)

Construction Follow-Up
During the construction phase, our experts follow up on work at the site to identify deviations from the planned construction and investment schedule.

Operational Follow-Up
During 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.

Additional services include:

  • Site classification according to IEC 61400-1, including turbulence analysis
  • 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.)

UL customers can discuss their needs directly with an experienced engineer to help ensure that all their technical needs are fully understood and met. Our global presence allows us to provide local services, in the local language, in all the primary manufacturing centers around the globe, as well as accelerated access to the world marketplace.