Page • Weather or atmospheric observations can be made to improve the performance of some models. Some weather measurements have small variations and can be approximated based upon location (e.g. atmospheric pressure can be estimated from site elevation). Others, such as air temperature, which have greater variation and play a strong role...
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Wind Speed and Direction
Page • Wind speed is measured with an anemometer. The most common type is a the cup-type anemometer, shown on the right side of the picture below. The number of rotations per time interval is used to calculate the wind speed. The vane on the left is used to measure the direction...
Workshops
Page • Upcoming Workshops 2026 PVPMC Workshop - Albuquerque, NM, USA (12-14 May 2026) Co-hosted by Sandia National Laboratories and GroundWork Renewables this workshop will cover all of the PV performance modeling topics you have come to expect. Details to come. Call for Abstracts is Open. Abstracts due February 1, 2026 2026...
Workshops & Publications
Page • Workshops– Past and Future workshops, including links to presentationsIEA PVPS Task 13 Reports - Reports from this international R&D organization related to PV performance and reliability.Sandia Reports - Listing of PV related SAND reports
WVM Discrete Point Example
Page • This example uses May 18th, 2014 irradiance data collected at Sandia National Laboratories in Livermore, CA to demonstrate use of the wavelet variability model (WVM). Contents load datadefine variablesrun WVMplot the WVM results load data This file contains two vectors: “GHI” which is the GHI measurements, and “dt” which is...
WVM Square Plant Example
Page • This example uses May 18th, 2014 irradiance data collected at Sandia National Laboratories in Livermore, CA to demonstrate use of the wavelet variability model (WVM). Contents load datadefine variablesrun WVMplot the WVM results load data This file contains two vectors: “GHI” which is the GHI measurements, and “dt” which is...
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