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Arlington Microgrid

The Arlington Microgrid and Clean Energy Center project represents a new technology and approach for grid resiliency and renewable energy integration. The project includes:

  • 500-kilowatt solar array with smart inverters
  • 1,000 kW/1,400 kWh lithium-ion battery storage system
  • Several vehicle-to-grid charging stations for use with the PUD’s electric fleet vehicles
  • Solar tree (see below)

What’s a “microgrid”?  A microgrid offers a unique emergency backup system for power. It is comprised of locally grouped electricity sources that can feed the main electrical grid or be disconnected to serve a specific location.

Benefits

  • Demonstrates multiple uses of energy storage
  • Provides utilities, municipalities and organizations a plan and design to study for future microgrid projects
  • Increases reliability in case of an emergency
  • The Community Solar array – one of the largest in the state – will provide the largest amount of solar energy generation in the PUD’s service area

View the PUD design

The Arlington Microgrid is a group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid.

A Community Solar program is part of the microgrid. Community Solar programs make it easier for all customers to benefit from solar energy by leasing or purchasing shares at a community site without needing a sunny roof or funding their own solar panels.

The Arlington Microgrid focuses on disaster recovery and grid resiliency. The system has been designed and sized to provide power to the PUD’s Arlington Community Office during an outage that could be caused by a major wind storm or earthquake.