Solar power is being used as disaster relief. Here's how

In the seven months since Hurricane Maria devastated the U.S. territory of Puerto Rico, efforts to restore the island to normalcy have been frustratingly slow. As many as 62,000 residents—or about five percent of the population—are still without power, a condition that is not only an annoyance to those living in the darkness, but also a potential danger. Lives depend upon having medical equipment running, food storage systems need to be in place to avoid spoilage, and rescue teams need lighting, to name a few key power needs. And while food and water can be shipped in, power must be repaired, which can taken days, weeks or—in the case of Puerto Rico—even months.