Each day the factories that I've been creating with my PWR crystals produce 1x PWR crystal when the factories are maxed out. I continually reinvest all of the crystals that I'm producing into more and factories and now that I've reached 600+ factories I'm producing 600+ crystals per day and that number grows and grows every day!
The goal is 1,245 factories and then every crystal beyond that will either be surplus for sale or go toward new mines whenever I buy a new property in Upland.