COVID - PHONE SCAM ALERT! Customers are reporting calls from individuals claiming to be from the PUD to collect payments. PUD 3 has suspended disconnections, disconnect notices, and late fees. THIS IS MOST LIKELY A SCAM! Do not select ANY option to speak to a representative. Hang up and call PUD 3 directly at 360-426-8255. Learn more by visiting our COVID-19 page.

Advertencia de Estafas! Varios clientes han reportado llamadas de individuos haciendose pasar por trabajadores de PUD para cobrar pagos. PUD 3 ha suspendido los cortes, las notas de retraso y desconnecion, como recargos por retraso de pagos. Si recibe una llamada acerca de esto, LO MAS PROBABLE ES QUE SEA UNA ESTAFA! No seleccione ninguna opcion para hablar con un representante. Cuelgue y llame Directamente a PUD 3 directamente al numero 360 426-8255.

En repuesta a el virus COVID-19:: Las oficinas públicas de PUD estan CERRADAS A EL PUBLICO hasta pronto aviso Nuestros representates de servicio al cliente aún están trabajando y están listos para ayudarte!! Llámanos al 360 426-8255 Necesitas pagar tu factura? • Utilize la application SmartHub o visitanos en linea en • Utilize nuestras buzones de deposito. • Utilize el nuevo quiosco ubicado en 310 W Cota St en el centro de Shelton. Chécalo en acción! 

September 8 - Bonneville Power Administration to Replace Major Piece of Electrical Equipment at Shelton Substation

September 8 - Bonneville Power Administration to Replace Major Piece of Electrical Equipment at Shelton Substation

by Mason PUD 3 on

August 26, 2019

Mason PUD 3's Redundant Electricity Distribution System to Keep Local Customers Online


(SHELTON, WA) -- In the early morning hours of Sunday, September 8, Bonneville Power Administration (BPA) will replace a 45-year-old circuit breaker at its Shelton substation on Olympic Highway North. The work is scheduled to begin at 2:00 AM.

Normally, such an operation would mean a large-scale power outage, in this case affecting nearly 6,000 Mason PUD 3 customers in the Shelton area. PUD 3 has a better idea. It will keep the power on by using a massive switching procedure involving seven substations to keep almost all customers online during BPA’s work.

About 300 customers on Johns Prairie Road, including the PUD 3 operations center, will be without power during the planned outage. PUD offices will run on backup generation. Sierra Pacific will also be without power during the work.

The switching order to re-route power has a whopping 96 steps: 48 to transfer the power load from the Johns Prairie, Mountain View, and Mason substations to the other substations, and 48 to put things back the way they were.

Mason PUD 3 strategically manages power loads on its substations to keep capacity set aside so it can do switching like this. The PUD’s distribution system allows for re-routing energy feeds for outage recovery and system maintenance. When the extra capacity shrinks because of load growth (as in the Skookum Substation), the PUD’s substation capacity revolving fund helps pay for new facilities (as in the currently-under-construction Totten Substation). This demonstrates wise financial and capital planning.

The circuit breaker that BPA is replacing feeds power to the PUD’s Mt. View Ring Bus, which distributes 115 kV transmission voltage to the Johns Prairie, Mountain View, and Mason substations. PUD 3 will use the brief downtime at the Mountain View switchyard to conduct maintenance on electrical equipment at that facility.

BPA’s work could take nearly two hours.

Mason PUD 3 is designated as a diamond level Reliable Public Power Provider by the American Public Power Association. Its future-focused financial and facility planning supports PUD’s mission of “…always providing safe, reliable, economical service, 24/7.”