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News Release

Oregon PUC Applauds Western Extended Day-Ahead Market Launch - 05/01/26

SALEM, Ore. – The Oregon Public Utility Commission (PUC) is pleased to see the Western Extended Day-Ahead Market (EDAM) reach this critical milestone. The PUC has invested significant time and resources alongside Commissions across the West to ensure a sound market, with fair governance and robust customer protection. The market will launch on May 1 and is expected to lower costs for customers, improve reliability, and support the further integration of renewable energy across the West. Oregon investor-owned electric utilities, PacifiCorp and Portland General Electric, are the first two participants in the market.

EDAM builds on the existing Western Energy Imbalance Market (WEIM), which launched in 2014 and is estimated to have saved PacifiCorp customers over $1.1 billion across its six state territory and PGE customers $365 million. EDAM will extend energy trading into the day-ahead timeframe, allowing Oregon utilities to share resources more efficiently and further reduce the use of fossil fueled generators when renewable resources are forecast to be abundant across the West.

The PUC has been a key leader in the development of EDAM, including supporting the development of effective and fair governance, advocating for robust market monitoring and customer protections, ensuring compliance with Oregon’s clean energy mandates and overseeing Oregon utilities’ participation. Chair Tawney has also played a foundational role in establishing the path to fully independent, western governance of the market. These efforts help ensure the EDAM structure supports Oregon’s goals for affordability, reliability, and reducing emissions now and into the future.

“Oregon is proud to work alongside our western partners to build a more reliable, affordable, and clean regional grid”, said PUC Chair Letha Tawney. “The Western EDAM is an important step toward squeezing the most value out of the renewable energy and transmission system that Oregon customers are paying for and improving grid resilience to extreme weather. By helping states share resources more efficiently, it also supports cutting emissions while keeping energy costs down for families and businesses. This milestone reflects years of collaboration across the West, and we remain committed to working with other states and utilities to the further benefit of customers.”

Pacific Power’s anticipated power cost savings from EDAM’s May 1 launch are already embedded in customers’ 2026 utility bills. But the savings from EDAM is expected to be most significant when the grid is stressed and energy is scarce – events which can otherwise quickly drive power costs into the hundreds of millions of dollars for Oregon utilities.

The PUC will continue monitoring implementation, ensuring alignment with state policy and evaluating utility participation as the market evolves to ensure the benefits flow to customer bills. 

Oregon PUC Applauds Western Extended Day-Ahead Market Launch - 05/01/26

SALEM, Ore. – The Oregon Public Utility Commission (PUC) is pleased to see the Western Extended Day-Ahead Market (EDAM) reach this critical milestone. The PUC has invested significant time and resources alongside Commissions across the West to ensure a sound market, with fair governance and robust customer protection. The market will launch on May 1 and is expected to lower costs for customers, improve reliability, and support the further integration of renewable energy across the West. Oregon investor-owned electric utilities, PacifiCorp and Portland General Electric, are the first two participants in the market.

EDAM builds on the existing Western Energy Imbalance Market (WEIM), which launched in 2014 and is estimated to have saved PacifiCorp customers over $1.1 billion across its six state territory and PGE customers $365 million. EDAM will extend energy trading into the day-ahead timeframe, allowing Oregon utilities to share resources more efficiently and further reduce the use of fossil fueled generators when renewable resources are forecast to be abundant across the West.

The PUC has been a key leader in the development of EDAM, including supporting the development of effective and fair governance, advocating for robust market monitoring and customer protections, ensuring compliance with Oregon’s clean energy mandates and overseeing Oregon utilities’ participation. Chair Tawney has also played a foundational role in establishing the path to fully independent, western governance of the market. These efforts help ensure the EDAM structure supports Oregon’s goals for affordability, reliability, and reducing emissions now and into the future.

“Oregon is proud to work alongside our western partners to build a more reliable, affordable, and clean regional grid”, said PUC Chair Letha Tawney. “The Western EDAM is an important step toward squeezing the most value out of the renewable energy and transmission system that Oregon customers are paying for and improving grid resilience to extreme weather. By helping states share resources more efficiently, it also supports cutting emissions while keeping energy costs down for families and businesses. This milestone reflects years of collaboration across the West, and we remain committed to working with other states and utilities to the further benefit of customers.”

Pacific Power’s anticipated power cost savings from EDAM’s May 1 launch are already embedded in customers’ 2026 utility bills. But the savings from EDAM is expected to be most significant when the grid is stressed and energy is scarce – events which can otherwise quickly drive power costs into the hundreds of millions of dollars for Oregon utilities.

The PUC will continue monitoring implementation, ensuring alignment with state policy and evaluating utility participation as the market evolves to ensure the benefits flow to customer bills.