Since 2006 Irradiance has manufactured Rotating Shadowband Radiometers, field
survey instruments for measuring and recording global, direct and diffuse solar
radiation that were invented by Dr. Edward Kern at his former company Ascension
Dr. Kern's son Chris began working with his father in 2012 and took over the
company in 2016 and is the designer of the RSR3. Dr. Edward Kern has now
retired from Irradiance but is available for consulting engagements via KRNLPWR.