In 2009, we had an array of photo-voltaic solar cells installed. The system comes with individual inverters for each panel and a data collector unit called the envoy. We have some charts and data available to us from enlighten, but I was determined to be able to gather some data myself for the time when the 5-years of included access runs out. This data is gathered by a Perl script which uses “scraping” of the envoy unit’s web pages for as much detail as possible. See the current solar charts for the latest charts.