UTILITIESONGOING

Seattle City Council Parks and City Light Committee AgendaPacket 2026-07-01

City Light Secures 16-Year BPA Power Supply Deal

not specified; power and transmission costs projected at over $250 million annually, increasing ~5% per year; new 16‑year contract signed December 2025City of SeattleBONNEVILLE POWER ADMINISTRATIONJune 30, 2026

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Description

Seattle City Light continues its long-term power supply relationship with the Bonneville Power Administration under a 16‑year contract starting in October 2028, ensuring access to low‑cost hydropower and flexible transmission services. The agreement supports roughly half of City Light’s energy needs and underpins the utility’s strategic plan amid growing regional load and climate uncertainty.

Contract Details

Contract Amount

not specified; power and transmission costs projected at over $250 million annually, increasing ~5% per year; new 16‑year contract signed December 2025

Vendor

BONNEVILLE POWER ADMINISTRATION

Agency

City of Seattle, WA

Contract Type

UTILITIES

Document Date

June 30, 2026

Contract Term

16-year contract beginning October 2028

Renewal Date

2044-10-01

Renewal Info

New 16‑year preference power and transmission contract begins October 2028, replacing existing BPA Block product with a Slice/Block product; projected average 5% annual cost increases for power and transmission. Future renewal beyond this term is not specified.

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