Every time this light blinks… another $100 is spent on electric infrastructure, because every six times this light blinks, Arizona gains a new resident.' Pinnacle West Capital Corporation is a holding entity for the largest power company in Arizona. A blinking light was used in this year's report to illustrate Arizona's relentless growth. Every time the light blinks, Arizona's power needs grow and Pinnacle West is there to accommodate that growth. 96 pages, 7 1/2 x 9 1/2, perfect-bound, die-cut the cover and first seventeen pages reveals a tiny light bulb, a pull-tab connects a battery to the bulb making the bulb blink.