System improvements

Completed projects

Select a project below to learn more about how PSE has continued to deliver quality service through strategic system improvements and regular maintenance.

Pierce

• Central Pierce-Alderton 115 kV transmission reliability improvement project

Snohomish

• Tolt 16-inch natural gas line | Phase 1 complete

Contact us

We welcome your questions and comments. Please contact:

1-888-404-8773
MajorProjects@pse.com

Learn more

• Glossary
• Process Overview
• Current System Improvements Projects