What Is Wind Power Density (WPD)?

WPD is a measure of the power in the wind per unit area of a vertical plane at the site and at the height chosen and is measured in Watt/m2. WPD at any given location is dependent on the air density and the wind speeds at that location.

What Is Wind Speed Dependent On?

The speed of wind varies from place to place and is dependent on various factors like geographical location, elevation, terrain features, vegetation cover and climatic conditions prevalent at the place at a given time.

What Is Plant Load Factor (PLF)?

Plant Load Factor (PLF) also known as Capacity Utilization Factor (CUF) indicates the capacity at which the wind turbine generator is operating. Since wind does not blow at constant speed throughout the year and at times may not be of sufficient speed (Cut-in Speed) to generate at all. Hence the WTG will not be operating at full rated capacity at all times. PLF is the ratio of the actual expected generation from wind turbine in a year to generation computed at rated capacity of wind turbine for the same year. It varies from 15% to 40% and very rarely is found to exceed 40%.

What Is The Unit Of Wind Energy Generation?


What Are The Analytical Results Possible From Spatialwind?

1. Wind Speed: This will give the annual average wind speed in m/s, available at the location at the given hub height or chosen height
2. PLF: This will give the PLF in percent at the location for the selected WTG at P50 probability of exceedance.
3. WPD: This gives the wind power density(in Watt/m2) at the site at the selected height.
4. Energy Generation: This is expected Annual Energy Output (AEO) that can be generated by the selected WTG (in kWhr).
5. Monthly Profile: A plot of mean monthly wind speeds expected at the site.