Sandia developed the Solar Glare Hazard Analysis Tool (SGHAT), a web-based tool that predicts energy production and the potential for solar glare and ocular impacts from an array of photovoltaic (PV) panels.
SGHAT uses an interactive Google Maps interface together with a few user-specified parameters such as orientation and tilt of the PV panels to quickly
- locate a site;
- outline the proposed array; and
- calculate the occurrence, intensity, and size of the potential glare throughout the year.
The tool also predicts the annual energy production of proposed PV arrays so that alternative designs, layouts, and locations can be optimized to maximize energy production while mitigating glare.
The use of this tool is required by a new federal policy (78 FR 63276) issued in October 2013 by the Federal Aviation Administration for solar-energy installations proposed at federally obligated airports in the U.S. Over 700 users from nearly 30 countries have registered to use SGHAT.