Governor's Energy Office
Colorado State Land Board

Lowry Range Solar Station  

Lowry Range
Colorado State Land Board

Latitude: 39.60701o North
Longitude: 104.58017o West
Elevation: 1860 meters AMSL

A collaborative project between the
Colorado State Land Board and
the Governor's Energy Office.

*** Notice: Users should not use any wind data from November 2008 through July 2009, because the tower had buckled. ***

Data sets currently available on Lowry Range Solar Station (LRSS) web site

Pictures of instrumentation and tower at LRSS site.

A rotating shadowband radiometer (RSR) offers a lower cost option of measuring solar radiation resources for renewable energy applications. The RSR uses a silicon-based photodiode pyranometer to measure the global and diffuse solar irradiance. The control and data acquisition system then computes the corresponding direct normal solar irradiance based on the geographic location of the RSR and the time of the data collection events.

By design, the RSRs offer the potential advantages of lower maintenance and calibration costs because they use a single pyranometer with a diffuser for determining the direct, diffuse, and global solar irradiance rather than up to three radiometers with larger optical surfaces, more complex support equipment, or more maintenance-intensive support equipment. Their potential disadvantage is the higher estimated measurement uncertainty because of factors such as the restricted spectral response of the silicon-based detector used in the RSR. Postprocessing software to account for the limited spectral response of the silicon detector has been developed and applied the RSR data. This solar-powered system is simple to operate and provides basic resource information.

For more information about the RSR visit Irradiance, Inc.

For more information about LRSS contact: Melissa Yoder
For more information about this website or the data contact: Afshin Andreas