CALL OUR EXPERTS FOR A COMPLETE, EFFICIENT AND RELIABLE PRODUCTIBLE ASSESSMENT

In an increasingly competitive market, risk management is a major issue for investors. Based on its operating experience feedback, 8.2 France offers a wide range of services, aiming to assess the wind and photovoltaic potential over the long term.

Production studies reviews can be carried out as part of Due Diligence Techniques.

yield assessment onshore offshore wind

Lidar/SOdar validation

    Ensuring optimal study conditions

    • 8.2 France can validate your RSD (Remote Sensing Devices: LiDAR or SoDAR) from a measuring mast conforming to the CEI standard.

    The purpose of this calculation is to check the performance of the RSD by comparing it to a measurement mast which will be used as a reference wind measurement

    Methodology: 

    Preliminary checks concerning the site orography, the obstacles, the reports as well as the photos of the installation of the measurement mast and the DRS
    Analysis of all measurement data and filtering in a reproducible and rule-based manner.
    Detailed results regarding general statistics, biases, correlations and uncertainties
    yield assessment solar, onshore and offshore wind

    MONITORING OF MEASUREMENT CAMPAIGNS

    Ensuring optimal study conditions

    Throughout the duration of your measurement campaign, 8.2 ensures the availability and validity of the measured data.

    In the event of an anomaly detected, we will alert you quickly.

    Typically : 

    Collect and analyze your data every week to quickly alert you if something goes wrong
    Editing a monthly report
    8.2 France yield assessment solar, onshore and offshore wind

    PRE-ESTIMATE OF THE PRODUCTIBLE

    A quick and independent estimate of production

    A prior assessment gives promoters a good idea of ​​the park’s production capacity.

    Methodology

    Use of the 10-minute series developed by VORTEX
    Wind modeling with a linear or CFD model to estimate the wind potential of your site
    Possible inclusion of losses to determine net P50
    Possible estimation of uncertainties and calculation of P90
    yield assessment solar, onshore and offshore wind

    PRODUCTIBLE STUDIES

    Thanks to a preliminary analysis of the wind farm project, our experts are able to help developers to optimize the ratio “investment in the measurement campaign / uncertainty on the estimate of the yield” by proposing the best measurement strategy.

    ONSHORE WIND

    Methods suitable for onshore wind power:

    * Statistical analysis of various long-term data sources to detect extreme weather events.

    * Estimated wind potential using a CFD method.

    * Determination of the net P50 taking into account losses (ex: losses by wake effect, management plans, other losses).

    * Assessment of all wind speed uncertainties in production uncertainties using the sensitivity factor to obtain the P90.

    OFFSHORE WIND

    A methodology adapted to OFFSHORE:

    • Calibration of roughness maps according to the classification of wind on water

    • CFD and time series simulation to monitor unsuitable Weibull distribution related to land and sea breeze combinations

    • Different models possible for simulating wake effects:
    ✓ Adaptation of existing models (PARK via Wake Decay Constant)
    ✓ Addition of a roughness layer (Deep Array models)
    ✓ Actuator disc simulation

    • Calculation of uncertainties with the Monte Carlo method to manage risk

    Extra strength: we are familiar with Lidar campaigns

    PHOTOVOLTAIC

    Our expertise also for solar:

    • Site visit: verification of site characteristics

    • Taking into account satellite databases: selection of a data source according to its suitability for the site

    • Calculation of energy distribution throughout the year by computer simulation (energy production, capacity factor, performance report)

    • Analysis of the temperature of the photovoltaic modules

    • Detailed calculation of production losses (dirt, IAM factor, PV conversion, irradiance level, temperature, shading, module quality, induced degradation light, discrepancy in the module network, wiring, inverter, auxiliaries, unavailability, …)

    yield assessment solar, onshore offshore wind

    PRODUCTIBLE STUDY REVIEW

    An estimate of the real wind potential of a wind farm in operation

    Review of existing energy performance assessments:

    • Evaluation of the quality of the data measured on site and of the reference data,
    • Qualitative examination of measuring instruments,
    • General evaluation of the methodology applied and its compliance with the state of the art,
    • Evaluation of the validity of the correlation with the long-term reference data,
    • Evaluation of the characteristics of the wind turbine used (power curve …),
    • Qualitative evaluation of the terrain and wake modeling,
    • Assessment of the air density estimate and how it was used in the calculations
    • Examination of systematic losses applied,
    • Assessment of uncertainty calculations, P50 and P90,
    • Review of reduction assumptions

    OUR REFERENCES
    KEY FIGURES FOR 8.2 FRANCE

    426 MW

    bankable energy efficiency assessments since 2008

    685 MW

    revisions to energy performance assessments since 2008

    They trust us

    1401, Avenue du Mondial 98


    34000 Montpellier


    Tél. 04 67 29 74 43


    Mail : info@8p2.fr