“Repowering” existing wind fleet, adding 3,000 MW of new wind and solar
resources part of overall long term plan

PORTLAND, Ore, April 4, 2017 – PacifiCorp today released a long-term energy plan that looks to new investments in renewable energy resources, upgrades to the company’s existing wind fleet, and energy efficiency measures to meet future customer energy needs. The $3.5 billion expansion plan, set to be in place by 2020, also incorporates building a segment of the Gateway West transmission line to facilitate the wind expansion.

The Integrated Resource Plan (IRP), which was filed with utility regulators across PacifiCorp’s
six-state service territory, is used as a road map to help the company provide reliable electric
service to customers at the lowest cost. The 2017 IRP includes the investments set to happen by
the end of 2020, but also looks 20 years down the road:

“These investments will significantly increase the amount of clean renewable energy serving
customers and reduce costs at the same time,” said Stefan Bird, president and CEO of Pacific
Power, the unit of PacifiCorp that serves customers in Oregon, Washington and California. “This
is a win-win and represents our continued commitment to both reduce the environmental impact
of the energy we produce and keep costs low.”

By moving to complete the wind upgrades and new wind developments by 2020, the company
will be able to use federal production tax credits and provide a net savings for customers over the
life of the projects.

Energy efficiency continues to play a key role in the company’s long-term resource plans. The
2017 IRP anticipates energy efficiency will offset 88 percent of forecasted growth in energy
usage over the next 10 years and continue to limit the need for new power plants.

A full IRP is developed every two years and an update is filed during off years. The IRP is based
on current information and subject to change. The 2017 IRP can be found at http://pacificorp.com/irp

About PacifiCorp
PacifiCorp provides electric service to 1.8 million customers in six western states. Operating as Pacific Power in Oregon, Washington and California and as Rocky Mountain Power in Utah, Wyoming and Idaho, our goal is to provide our customers with value for their energy dollar through safe, reliable electricity.