Lance Li, the CEO of Aerospec Technologies, a drone inspection and analytics company, has set out to make operating a solar farm more efficient, safer, and ultimately, more predictable. “During an annual checkup, it can take a maintenance crew a month to walk through and survey part of a 450,000-panel solar site, the size of 90 football fields, and weeks to analyze the data,” he says. “In comparison, it takes our drones only three days to fly over a site of the same size, and just minutes to process the data in a way that allows the operator to know the percentage of the site that needs repairs and the cost to his bottom line.”