Metrics glossary¶
Headline metrics¶
Freestream production (100% availability) freestream_100pct_avail¶
What the turbines would have produced without wakes, reconstructed from SCADA and imputed to a 100%-availability basis — the no-wake reference for the measured wake loss.
Unit: MWh
Aggregation: summed over the period
Production (100% availability) production_100pct_avail¶
Measured farm production imputed to a 100%-availability basis.
Unit: MWh
Aggregation: summed over the period
Expected (optimized, 100% avail.) target_energy¶
Tipspeed-optimized expected farm production at 100% availability.
Unit: MWh
Aggregation: summed over the period
Performance ratio performance_ratio¶
Production at 100% availability divided by the after-wakes prediction; 100% means on target.
graph LR
freestream_current_energy(["Freestream (current period)"])
performance_ratio["Performance ratio"]
production_100pct_avail(["Production (100% availability)"])
tipspeed_after_wakes_energy["Tipspeed after wakes"]
wake_current_loss{{"Wakes loss (current period)"}}
freestream_current_energy --> tipspeed_after_wakes_energy
production_100pct_avail --> performance_ratio
tipspeed_after_wakes_energy --> performance_ratio
wake_current_loss --> tipspeed_after_wakes_energy
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style performance_ratio fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style production_100pct_avail fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_wakes_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style wake_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: %
Assumptions: Ratio of summed energies over the period.
Comes from: Production (100% availability), Tipspeed after wakes
Recoverable energy recoverable_energy¶
Total energy recoverable by correcting yaw misalignment and bringing bat, noise and wind-sector-management curtailment back to their expected levels. Only categories above their expected level count: one already below it contributes nothing rather than offsetting the others.
graph LR
bat_curtailment_recoverable_loss{{"Recoverable loss: bat curtailment"}}
noise_curtailment_recoverable_loss{{"Recoverable loss: noise curtailment"}}
recoverable_energy["Recoverable energy"]
wind_sector_management_curtailment_recoverable_loss{{"Recoverable loss: wind-sector-management curtailment"}}
yaw_misalignment_recoverable_loss{{"Recoverable loss: yaw misalignment"}}
bat_curtailment_recoverable_loss --> recoverable_energy
noise_curtailment_recoverable_loss --> recoverable_energy
wind_sector_management_curtailment_recoverable_loss --> recoverable_energy
yaw_misalignment_recoverable_loss --> recoverable_energy
style bat_curtailment_recoverable_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style noise_curtailment_recoverable_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style recoverable_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style wind_sector_management_curtailment_recoverable_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style yaw_misalignment_recoverable_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Recoverable loss: bat curtailment, Recoverable loss: noise curtailment, Recoverable loss: wind-sector-management curtailment, Recoverable loss: yaw misalignment
Wind¶
Air density air_density¶
Air density simulated at the turbine, used to normalise wind speed before comparison with the warranted power curve.
Unit: kg/m³
Assumptions: Full-performance 10-minute rows only.
Aggregation: averaged over the period
Freestream turbulence intensity freestream_turbulence_intensity¶
Turbulence intensity of the undisturbed wind reaching the turbine, before wake effects.
Unit: -
Aggregation: averaged over the period
Rotor-effective wind speed after curtailment rotor_effective_wind_speed_after_curtailment¶
Wind speed averaged over the rotor disc once environmental curtailment has been applied.
Unit: m/s
Aggregation: averaged over the period
Turbulence intensity after curtailment turbulence_intensity_after_curtailment¶
Turbulence intensity once environmental curtailment has been applied.
Unit: -
Aggregation: averaged over the period
Mean wind direction wind_direction¶
Prevailing wind direction at the turbine, computed as the unit-vector circular mean.
Unit: °
Aggregation: circular-averaged over the period
Mean wind speed wind_speed¶
Average wind speed experienced by the turbine over the selected period.
Unit: m/s
Binning: 0.5 m/s bins, centered on multiples of 0.5 m/s
Assumptions: Mean over the selected date range.
Aggregation: averaged over the period
Wind speed after curtailment wind_speed_after_curtailment¶
Hub-height wind speed once environmental curtailment has been applied.
Unit: m/s
Aggregation: averaged over the period
Turbine¶
Mean blade pitch blade_pitch¶
Mean collective blade pitch angle while the turbine is running at full performance.
Unit: °
Assumptions: Mean collective blade pitch angle (averaged over the three blades) over full-performance 10-min rows.
Aggregation: averaged over the period
Expected power expected_power¶
Mean Tipspeed-optimized expected power over the selected period.
Unit: kW
Aggregation: averaged over the period
Expected power (full performance) expected_power_full_performance¶
Mean Tipspeed-optimized expected power over full-performance rows.
Unit: kW
Assumptions: Mean Tipspeed-optimized expected power over the same full-performance 10-min rows as Power (full performance), so the two differ by exactly Turbine performance.
Aggregation: averaged over the period
Nacelle temperature delta nacelle_air_temperature_delta¶
Mean gap between the SCADA and Tipspeed air-temperature sensors.
Unit: °C
Assumptions: Mean of (SCADA air temperature - Tipspeed air temperature) over full-performance rows; positive = SCADA sensor reads high.
Aggregation: averaged over the period
Nacelle north offset nacelle_north_offset¶
Mean offset between measured and controller-known nacelle direction (north-reference miscalibration).
Unit: °
Assumptions: SCADA power in [0, 20000] kW; offsets of any size are kept; mean over the selected date range.
Aggregation: averaged over the period
Nacelle wind-speed delta nacelle_wind_speed_delta¶
Mean gap between the raw nacelle anemometer and Tipspeed calibrated wind speed.
Unit: m/s
Assumptions: Mean of (SCADA nacelle anemometer - Tipspeed wind speed) over full-performance rows; positive = nacelle reads high.
Aggregation: averaged over the period
Mean power power¶
Mean SCADA power over the selected period, including stopped and curtailed periods.
Unit: kW
Aggregation: averaged over the period
Power curve reference air density power_curve_reference_air_density¶
Air density the turbine's warranted power curve is published at, and the density measured wind speed is normalised to before it is compared with that curve.
Unit: kg/m³
Assumptions: Taken from the turbine model's nominal power curve. A property of the machine, not a site condition.
Aggregation: averaged over the period
Turbine performance power_delta¶
Gap between measured and Tipspeed-optimized expected power; negative means the turbine underproduced.
Unit: kW
Assumptions: Full-performance 10-minute rows only.
Aggregation: averaged over the period
Power (full performance) power_full_performance¶
Mean measured power while the turbine is running at full performance.
Unit: kW
Assumptions: Mean SCADA power over full-performance 10-min rows only; excludes stops, curtailment and out-of-environmental-spec periods.
Aggregation: averaged over the period
Mean rotor speed rotor_speed¶
Mean rotor rotational speed while the turbine is running at full performance.
Unit: rpm
Assumptions: Mean rotor rotational speed over full-performance 10-min rows.
Aggregation: averaged over the period
Yaw misalignment yaw_misalignment¶
Mean angular offset between the nacelle heading and the inflow wind direction. Sign convention: negative = nacelle points anticlockwise of the wind.
Unit: °
Assumptions: SCADA power in [0, 20000] kW and |misalignment| < 90°; mean over the selected date range.
Aggregation: averaged over the period
Nacelle wind-speed NTF¶
Per-turbine calibration relating the turbine's own nacelle anemometer to Tipspeed's calibrated free-stream wind speed. Reported as a linear fit — a slope and an offset — so a slope near 1 and an offset near 0 mean the nacelle sensor tracks the true wind well.
Method: Ordinary least squares on 6-hourly averages, grouped into 0.5 m/s wind-speed bins across the band from 4 to 11 m/s, on full-performance data. Uncertainties are analytic standard errors; goodness of fit (R²) is measured against the raw 10-minute scatter.
Unit: m/s
Nacelle temperature NTF¶
Per-turbine calibration relating the turbine's own nacelle air-temperature sensor to Tipspeed's reference air temperature, as a linear fit (slope and offset).
Method: Ordinary least squares on 30-minute averages, grouped into 1 °C bins across the band from -5 to 35 °C, on full-performance data. Uncertainties are analytic standard errors; goodness of fit (R²) is measured against the raw 10-minute scatter.
Unit: °C
Waterfall: representative period¶
Freestream (representative period) freestream_rep_energy¶
Prediction on the representative period including the correction for observed site-specific performance compared to long term.
Unit: MWh
Aggregation: summed over the period
Gross (representative period) gross_rep_energy¶
Gross production over the representative (long-term) period.
Unit: MWh
Aggregation: summed over the period
Wakes loss (representative period) wakes_rep_loss¶
Internal and external wake losses over the representative period.
Unit: MWh
Aggregation: summed over the period
Yaw misalignment loss (representative period) yaw_misalignment_loss_longterm¶
Loss attributed to observed yaw misalignment, over the representative period.
Unit: MWh
Aggregation: summed over the period
Site-specific performance loss (representative period) site_specific_perf_rep_loss¶
Loss from observed site-specific performance compared to long term, over the representative period.
graph LR
freestream_rep_energy(["Freestream (representative period)"])
gross_rep_energy(["Gross (representative period)"])
site_specific_perf_rep_loss{{"Site-specific performance loss (representative period)"}}
freestream_rep_energy --> site_specific_perf_rep_loss
gross_rep_energy --> site_specific_perf_rep_loss
style freestream_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style site_specific_perf_rep_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4AUnit: MWh
Comes from: Freestream (representative period), Gross (representative period)
Tipspeed after wakes (representative period) tipspeed_after_wakes_rep_energy¶
Prediction on the representative period including internal and external wake losses.
graph LR
freestream_rep_energy(["Freestream (representative period)"])
tipspeed_after_wakes_rep_energy["Tipspeed after wakes (representative period)"]
wakes_rep_loss{{"Wakes loss (representative period)"}}
freestream_rep_energy --> tipspeed_after_wakes_rep_energy
wakes_rep_loss --> tipspeed_after_wakes_rep_energy
style freestream_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_wakes_rep_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style wakes_rep_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Freestream (representative period), Wakes loss (representative period)
Waterfall: current period¶
Freestream (current period) freestream_current_energy¶
Prediction on the current period including the correction for observed site-specific performance compared to long term.
Unit: MWh
Aggregation: summed over the period
Gross (current period) gross_current_energy¶
Gross production over the current period.
Unit: MWh
Aggregation: summed over the period
Wakes loss (current period) wake_current_loss¶
Internal and external wake losses over the current period.
Unit: MWh
Aggregation: summed over the period
Yaw misalignment loss (current period) yaw_misalignment_current_loss¶
Loss attributed to observed yaw misalignment, over the current period.
Unit: MWh
Aggregation: summed over the period
Expected with current site-specific performance expected_current_site_specific_perf_energy¶
Prediction on the current period corrected for observed windiness and site-specific performance, before the current-period wake correction.
graph LR
expected_current_site_specific_perf_energy["Expected with current site-specific performance"]
freestream_current_energy(["Freestream (current period)"])
wakes_rep_loss{{"Wakes loss (representative period)"}}
freestream_current_energy --> expected_current_site_specific_perf_energy
wakes_rep_loss --> expected_current_site_specific_perf_energy
style expected_current_site_specific_perf_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style wakes_rep_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Freestream (current period), Wakes loss (representative period)
Expected with current windiness expected_current_windiness_energy¶
Prediction on the current period including the correction for observed windiness compared to long term.
graph LR
expected_current_windiness_energy["Expected with current windiness"]
freestream_rep_energy(["Freestream (representative period)"])
gross_current_energy(["Gross (current period)"])
gross_rep_energy(["Gross (representative period)"])
gross_windiness_loss{{"Windiness loss"}}
tipspeed_after_wakes_rep_energy["Tipspeed after wakes (representative period)"]
wakes_rep_loss{{"Wakes loss (representative period)"}}
freestream_rep_energy --> tipspeed_after_wakes_rep_energy
gross_current_energy --> gross_windiness_loss
gross_rep_energy --> gross_windiness_loss
gross_windiness_loss --> expected_current_windiness_energy
tipspeed_after_wakes_rep_energy --> expected_current_windiness_energy
wakes_rep_loss --> tipspeed_after_wakes_rep_energy
style expected_current_windiness_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style freestream_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_windiness_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_wakes_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style wakes_rep_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Windiness loss, Tipspeed after wakes (representative period)
Windiness loss gross_windiness_loss¶
Correction for observed windiness on the current period compared to long term.
graph LR
gross_current_energy(["Gross (current period)"])
gross_rep_energy(["Gross (representative period)"])
gross_windiness_loss{{"Windiness loss"}}
gross_current_energy --> gross_windiness_loss
gross_rep_energy --> gross_windiness_loss
style gross_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_windiness_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4AUnit: MWh
Comes from: Gross (current period), Gross (representative period)
Site-specific performance loss (current period) site_specific_perf_current_loss¶
Loss from observed site-specific performance compared to long term, over the current period.
graph LR
freestream_current_energy(["Freestream (current period)"])
gross_current_energy(["Gross (current period)"])
site_specific_perf_current_loss{{"Site-specific performance loss (current period)"}}
freestream_current_energy --> site_specific_perf_current_loss
gross_current_energy --> site_specific_perf_current_loss
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style site_specific_perf_current_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4AUnit: MWh
Comes from: Freestream (current period), Gross (current period)
Site-specific performance loss (windiness correction) site_specific_perf_windiness_loss¶
Correction for observed site-specific performance on the current period compared to long term.
graph LR
freestream_current_energy(["Freestream (current period)"])
freestream_rep_energy(["Freestream (representative period)"])
gross_current_energy(["Gross (current period)"])
gross_rep_energy(["Gross (representative period)"])
site_specific_perf_current_loss{{"Site-specific performance loss (current period)"}}
site_specific_perf_rep_loss{{"Site-specific performance loss (representative period)"}}
site_specific_perf_windiness_loss{{"Site-specific performance loss (windiness correction)"}}
freestream_current_energy --> site_specific_perf_current_loss
freestream_rep_energy --> site_specific_perf_rep_loss
gross_current_energy --> site_specific_perf_current_loss
gross_rep_energy --> site_specific_perf_rep_loss
site_specific_perf_current_loss --> site_specific_perf_windiness_loss
site_specific_perf_rep_loss --> site_specific_perf_windiness_loss
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style freestream_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style gross_rep_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style site_specific_perf_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style site_specific_perf_rep_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style site_specific_perf_windiness_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4AUnit: MWh
Comes from: Site-specific performance loss (current period), Site-specific performance loss (representative period)
Tipspeed after wakes tipspeed_after_wakes_energy¶
Prediction on the current period including internal and external wake losses.
graph LR
freestream_current_energy(["Freestream (current period)"])
tipspeed_after_wakes_energy["Tipspeed after wakes"]
wake_current_loss{{"Wakes loss (current period)"}}
freestream_current_energy --> tipspeed_after_wakes_energy
wake_current_loss --> tipspeed_after_wakes_energy
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_wakes_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style wake_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Freestream (current period), Wakes loss (current period)
Tipspeed after yaw misalignment tipspeed_after_yaw_energy¶
Prediction accounting for observed yaw misalignment, at 100% availability. An intermediate level between the two under-performance bars, not a headline expectation.
graph LR
freestream_current_energy(["Freestream (current period)"])
tipspeed_after_wakes_energy["Tipspeed after wakes"]
tipspeed_after_yaw_energy["Tipspeed after yaw misalignment"]
wake_current_loss{{"Wakes loss (current period)"}}
yaw_misalignment_current_loss{{"Yaw misalignment loss (current period)"}}
freestream_current_energy --> tipspeed_after_wakes_energy
tipspeed_after_wakes_energy --> tipspeed_after_yaw_energy
wake_current_loss --> tipspeed_after_wakes_energy
yaw_misalignment_current_loss --> tipspeed_after_yaw_energy
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_wakes_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_yaw_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style wake_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style yaw_misalignment_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Tipspeed after wakes, Yaw misalignment loss (current period)
Wakes loss (windiness correction) wake_windiness_loss¶
Correction for observed wake effects on the current period compared to long term.
graph LR
wake_current_loss{{"Wakes loss (current period)"}}
wake_windiness_loss{{"Wakes loss (windiness correction)"}}
wakes_rep_loss{{"Wakes loss (representative period)"}}
wake_current_loss --> wake_windiness_loss
wakes_rep_loss --> wake_windiness_loss
style wake_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style wake_windiness_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style wakes_rep_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Wakes loss (current period), Wakes loss (representative period)
Waterfall: performance assessment¶
Recoverable loss: yaw misalignment yaw_misalignment_recoverable_loss¶
Signed energy delta between the actual and expected yaw-misalignment loss. If positive, energy recoverable by correcting yaw toward the optimal heading; if negative, current yaw performance is already better than expected.
Unit: MWh
Aggregation: summed over the period
Other under-performance loss other_under_performance_loss¶
Gap between the yaw-corrected prediction and production at 100% availability.
graph LR
freestream_current_energy(["Freestream (current period)"])
other_under_performance_loss{{"Other under-performance loss"}}
production_100pct_avail(["Production (100% availability)"])
tipspeed_after_wakes_energy["Tipspeed after wakes"]
tipspeed_after_yaw_energy["Tipspeed after yaw misalignment"]
wake_current_loss{{"Wakes loss (current period)"}}
yaw_misalignment_current_loss{{"Yaw misalignment loss (current period)"}}
freestream_current_energy --> tipspeed_after_wakes_energy
production_100pct_avail --> other_under_performance_loss
tipspeed_after_wakes_energy --> tipspeed_after_yaw_energy
tipspeed_after_yaw_energy --> other_under_performance_loss
wake_current_loss --> tipspeed_after_wakes_energy
yaw_misalignment_current_loss --> tipspeed_after_yaw_energy
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style other_under_performance_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style production_100pct_avail fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_wakes_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_yaw_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style wake_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style yaw_misalignment_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Production (100% availability), Tipspeed after yaw misalignment
Under-performance loss under_performance_loss¶
Gap between the after-wakes prediction and production at 100% availability.
graph LR
freestream_current_energy(["Freestream (current period)"])
production_100pct_avail(["Production (100% availability)"])
tipspeed_after_wakes_energy["Tipspeed after wakes"]
under_performance_loss{{"Under-performance loss"}}
wake_current_loss{{"Wakes loss (current period)"}}
freestream_current_energy --> tipspeed_after_wakes_energy
production_100pct_avail --> under_performance_loss
tipspeed_after_wakes_energy --> under_performance_loss
wake_current_loss --> tipspeed_after_wakes_energy
style freestream_current_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style production_100pct_avail fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style tipspeed_after_wakes_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style under_performance_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style wake_current_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Production (100% availability), Tipspeed after wakes
Waterfall: production losses¶
Energy (full performance) energy_full_performance¶
Measured energy produced while the turbine was running at full performance.
Unit: MWh
Assumptions: Measured energy summed over full-performance 10-minute rows only; excludes stops, curtailment and out-of-environmental-spec operation. On those rows the imputation the source column is named for is inert, so this is measured energy.
Aggregation: summed over the period
Expected energy (full performance) expected_energy_full_performance¶
Tipspeed-optimized expected energy over full-performance rows.
Unit: MWh
Assumptions: Tipspeed-optimized expected energy over exactly the same full-performance 10-minute rows as Energy (full performance), so the two are directly comparable.
Aggregation: summed over the period
Full-performance slots full_performance_slots¶
Number of 10-minute rows in which the turbine was running at full performance.
Unit: -
Assumptions: Count of 10-minute rows whose SCADA status is full performance. Carries no where= mask by design: it must count over every row present, not over the rows it is counting.
Aggregation: summed over the period
Production actual_after_curtailment_energy¶
Final production measured by SCADA, after curtailment.
Unit: MWh
Aggregation: summed over the period
Out-of-environmental-spec loss out_of_env_spec_loss¶
Loss due to stops related to out-of-environmental-specification conditions.
Unit: MWh
Aggregation: summed over the period
Partial-performance loss partial_performance_loss¶
Loss due to partial performance (e.g. partial availability, derating).
Unit: MWh
Aggregation: summed over the period
Recoverable loss: bat curtailment bat_curtailment_recoverable_loss¶
Signed energy delta between the actual and expected bat-curtailment loss. If positive, energy recoverable by reducing bat curtailment to the expected level; if negative, current bat curtailment is already below expected.
Unit: MWh
Aggregation: summed over the period
Recoverable loss: noise curtailment noise_curtailment_recoverable_loss¶
Signed energy delta between the actual and expected noise-curtailment loss. If positive, energy recoverable by reducing noise curtailment to the expected level; if negative, current noise curtailment is already below expected.
Unit: MWh
Aggregation: summed over the period
Recoverable loss: wind-sector-management curtailment wind_sector_management_curtailment_recoverable_loss¶
Signed energy delta between the actual and expected wind-sector-management-curtailment loss. If positive, energy recoverable by reducing the curtailment to the expected level; if negative, current curtailment is already below expected.
Unit: MWh
Aggregation: summed over the period
Production plus out-of-environmental-spec loss actual_with_out_of_env_spec_energy¶
Production including losses due to stops in out-of-environmental-specification conditions.
graph LR
actual_with_out_of_env_spec_energy{{"Production plus out-of-environmental-spec loss"}}
out_of_env_spec_loss{{"Out-of-environmental-spec loss"}}
production_100pct_avail(["Production (100% availability)"])
out_of_env_spec_loss --> actual_with_out_of_env_spec_energy
production_100pct_avail --> actual_with_out_of_env_spec_energy
style actual_with_out_of_env_spec_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style out_of_env_spec_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style production_100pct_avail fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Out-of-environmental-spec loss, Production (100% availability)
Production plus partial performance loss actual_with_partial_performance_energy¶
Production including losses due to partial performance (e.g. partial availability, derating).
graph LR
actual_with_out_of_env_spec_energy{{"Production plus out-of-environmental-spec loss"}}
actual_with_partial_performance_energy{{"Production plus partial performance loss"}}
actual_with_stops_energy{{"Production plus stops loss"}}
out_of_env_spec_loss{{"Out-of-environmental-spec loss"}}
partial_performance_loss{{"Partial-performance loss"}}
production_100pct_avail(["Production (100% availability)"])
stopped_loss{{"Stopped loss"}}
actual_with_out_of_env_spec_energy --> actual_with_stops_energy
actual_with_stops_energy --> actual_with_partial_performance_energy
out_of_env_spec_loss --> actual_with_out_of_env_spec_energy
partial_performance_loss --> actual_with_partial_performance_energy
production_100pct_avail --> actual_with_out_of_env_spec_energy
stopped_loss --> actual_with_stops_energy
style actual_with_out_of_env_spec_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style actual_with_partial_performance_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style actual_with_stops_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style out_of_env_spec_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style partial_performance_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style production_100pct_avail fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style stopped_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Production plus stops loss, Partial-performance loss
Production plus stops loss actual_with_stops_energy¶
Production including losses due to stops.
graph LR
actual_with_out_of_env_spec_energy{{"Production plus out-of-environmental-spec loss"}}
actual_with_stops_energy{{"Production plus stops loss"}}
out_of_env_spec_loss{{"Out-of-environmental-spec loss"}}
production_100pct_avail(["Production (100% availability)"])
stopped_loss{{"Stopped loss"}}
actual_with_out_of_env_spec_energy --> actual_with_stops_energy
out_of_env_spec_loss --> actual_with_out_of_env_spec_energy
production_100pct_avail --> actual_with_out_of_env_spec_energy
stopped_loss --> actual_with_stops_energy
style actual_with_out_of_env_spec_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style actual_with_stops_energy fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style out_of_env_spec_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style production_100pct_avail fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style stopped_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Production plus out-of-environmental-spec loss, Stopped loss
Other loss other_loss¶
Residual difference between the partial-performance level and final SCADA production.
graph LR
actual_after_curtailment_energy(["Production"])
actual_with_out_of_env_spec_energy{{"Production plus out-of-environmental-spec loss"}}
actual_with_partial_performance_energy{{"Production plus partial performance loss"}}
actual_with_stops_energy{{"Production plus stops loss"}}
other_loss{{"Other loss"}}
out_of_env_spec_loss{{"Out-of-environmental-spec loss"}}
partial_performance_loss{{"Partial-performance loss"}}
production_100pct_avail(["Production (100% availability)"])
stopped_loss{{"Stopped loss"}}
actual_after_curtailment_energy --> other_loss
actual_with_out_of_env_spec_energy --> actual_with_stops_energy
actual_with_partial_performance_energy --> other_loss
actual_with_stops_energy --> actual_with_partial_performance_energy
out_of_env_spec_loss --> actual_with_out_of_env_spec_energy
partial_performance_loss --> actual_with_partial_performance_energy
production_100pct_avail --> actual_with_out_of_env_spec_energy
stopped_loss --> actual_with_stops_energy
style actual_after_curtailment_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style actual_with_out_of_env_spec_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style actual_with_partial_performance_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style actual_with_stops_energy fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style other_loss fill:#F5E6F9,stroke:#CB6CE6,stroke-width:3px,color:#2C1E4A
style out_of_env_spec_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style partial_performance_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style production_100pct_avail fill:#F5E6F9,stroke:#742181,color:#2C1E4A
style stopped_loss fill:#F5E6F9,stroke:#742181,color:#2C1E4AUnit: MWh
Comes from: Production, Production plus partial performance loss