Arlington Microgrid Project

Source: SnoPUD.com

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. In an emergency, the microgrid would disconnect from the main grid and help power the PUD’s new local office in Arlington.

As part of the microgrid, the PUD is planning a Community Solar program at the site. 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 for their own solar panels.

The Arlington Microgrid will focus on disaster recovery and grid resiliency. The system will be designed and sized to provide power to the Arlington Local Office during an outage that could be caused by a wind storm or by the big Cascadia Rising type earthquake that has been in the news recently. When the Microgrid isn’t acting like a giant solar-powered emergency generator, it will be helping to pay for itself by providing renewable energy integration and grid support. Additionally, with the growing interest in electric vehicles, the microgrid will incorporate a few electric fleet vehicle charging stations referred to as Vehicle-to-Grid or V2G. A V2G charging station can charge the car as well as allow for the energy stored in the electric vehicle to flow back to the grid and provide support during an outage.

“If the grid were to go down in a disaster, this building and facility would play a very important part of the PUD’s response,” said Scott Gibson, project manager. “This will be the only sustainably powered facility in the entire service territory and would give us a huge advantage. The worst-case scenario is that a disaster might leave the grid along with the transportation infrastructure damaged for several months. The Arlington Microgrid could sustain the local office in the meantime. Also, its proximity to the Arlington Airport would be key in an emergency.”

The project also features a facility – the Clean Energy Technology Center – that will be used to demonstrate the microgrid technology and help educate the public about burgeoning technologies in the energy world.

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