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Significant additions to our electric transmission system will be needed in the next 10 years. We publish our Integrated Resource Plan
(IRP) every two years. It provides a framework and plan for the prudent future actions required to ensure we continue to provide
reliable and low-cost electric service to customers throughout our six-state system. The IRP was developed with considerable
public involvement from customer interest groups, regulatory staff, regulators and other stakeholders.
The IRP identifies a need for additional electric transmission lines required by the addition of new generating resources,
either from new generating plants, or to provide a path for additional electricity purchases from other entities in the region.
We remain involved in discussions at state and federal levels on the critical need to expand transmission systems in the region.
We are currently in the process of studying and planning transmission expansion projects identified inside and outside of
the IRP planning process. This process includes very long-range planning to ensure our transmission system integrates well
with other utility systems in the Western Electricity Coordinating Council (WECC).
We have specific projects in progress. The areas below provide maps, background information and dates where the public approval
process can be found.
Current projects
(Updated May 11, 2008)
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