Guam Power Authority Smart Grid Project

From Open Energy Information

The Guam Power Authority, located in Hagatna, Guam will receive $16 million in funding to develop a smarter, more efficient energy grid. The U.S. Department of Energy chose the Guam Power Authority as one of 100 companies to receive federal stimulus funds as part of the American Recovery and Reinvestment Act of 2009.[2]

The Guam Power Authority’s (GPA) Smart Grid project involves a territory-wide deployment of advanced metering infrastructure (AMI) and implementation of distribution and substation automation equipment, which includes circuit switches, capacitors, voltage regulators, fault indicators, smart relays, and equipment sensors. Customers can install devices that assist in managing electricity use and costs, including in-home displays and home area networks. The new AMI and distribution automation technologies are intended to improve reliability and stability of GPA’s electric system, reduce operating costs, and accommodate future deployment of distributed generation.[3]


  • 56,735 Smart Meters
  • AMI Communication Systems
  • Meter Communications Network
  • Backhaul Communications
  • Customer Web Portal
  • Distribution Automation Equipment for 17 out of 64 Circuits
  • Distribution Management System
  • Distribution Automation Communications Network
  • Automated Distribution Circuit Switches
  • Automated Capacitors

Targeted Benefits

  • Reduced Meter Reading Costs
  • Reduced Operating and Maintenance Costs
  • Improved Electric Service Reliability and Power Quality
  • Reduced Costs from Equipment Failures, Distribution Line Losses, and Theft
  • Deferred Investment in Distribution Capacity Expansion
  • Reduced Truck Fleet Fuel Usage
  • Reduced Greenhouse Gas and Criteria Pollutant Emissions


  1. ARRA Smart Grid Investment Grants
  2. 2.0 2.1 Guam Power Authority Award
  3. Project Information Page