Measurement of reflected solar irradiance is receiving significant attention by industry, military, and government agencies to assess potential impacts of glint and glare from growing numbers of solar power installations around the world. In addition, characterization of the incident solar flux distribution on central receivers for concentrating solar power applications is important to monitor and maintain system performance. This website contains tools to evaluate solar glare and receiver irradiance.
Dr. Clifford K. Ho and Cianan Sims, the inventors of SGHAT, will be instructing a training workshop at the SPI 2016 conference in Las Vegas, Nevada on September 15, 2016. The workshop, titled Solar Glare Analysis & PV Design Optimization, will offer attendees a chance to explore the ins and outs of glare analysis with hands-on training. From the SPI conference website:
This half-day workshop will provide training on the use of SGHAT and is suited for solar developers, businesses, or members of the public who wish to evaluate glare and energy production from PV systems. By the end of the workshop, attendees will understand regulatory requirements regarding glare and solar installations, be versed in the physics and consequences of reflectivity and glare from PV systems, and be able to use the ForgeSolar web application, a licensed implementation of SGHAT, to configure PV systems that mitigate glare while maximizing annual energy production.
The Solar Glare Hazard Analysis Tool (SGHAT) web application (versions 1 and 2) found on this site will be disabled in 2016. You can download your existing data (in JSON format) below. The technology behind SGHAT (the raw code and algorithms) is now available for licensing from Sandia Laboratories. Interested parties can contact the licensing department. Webinars will be held in the coming months. Announcements will be posted soon.
Users seeking to use SGHAT for glare analyses can visit the following licensed SGHAT applications. These sites are available for online usage and include recent SGHAT enhancements and features:
All other tools on this site will remain available. Thank you for your continued support and interest in SGHAT.
This tool determines when and where solar glare can occur throughout the year from a user-specified PV array as viewed from user-prescribed observation points. The potential ocular impact from the observed glare is also determined, along with a prediction of the annual energy production. Configurations can be quickly modified (e.g., tilt, orientation, shape, location) to identify a design that mitigates glare while maximizing energy production.
Meets FAA glare analysis requirements (78 FR 63276).
Empirically quantify glint and glare from reflected light and assess the potential impact (e.g. temporary after-image, retinal burn). No expensive equipment required - just upload photos of the glare and the sun.
Analytically predict the potential impact (e.g. temporary after-image, retinal burn) of observed glare.
Empirically determine the irradiance distribution on a central receiver. No flux gauge needed - simply upload photos and fill in the details, and the tool does the rest.
Calculate the reflectivity of a receiver using only raw photos and details like location and heliostat characteristics.