SRP is one of the largest public power entities in the nation. As a community-based not-for-profit water and energy company, SRP provides reliable, affordable water and power to more than 2 million people living in central Arizona. SRP has provided these essential resources for more than a century to meet the needs of customers and help the region grow. SRP features a high-quality looped electrical system in metropolitan Phoenix. This is just one reason SRP consistently wins national awards for power quality and reliability and receives high performance ratings from our large-business customers.