The Tonquin Project will add a new substation and upgrades to 11 miles of 115 kV transmission lines in Tualatin, Sherwood, Stafford, Wilsonville and unincorporated Clackamas County. These improvements will strengthen the grid, making it more resilient and reliable while adding capacity to meet future needs. Added flexibility will enable energy to flow from different substations, reducing power outages and enhancing system redundancy.