Washington's main clean energy law is the Clean Energy Transformation Act, or CETA — signed in 2019 and still being implemented in phases through 2045. Here's what it actually requires, and where things stand as of 2026.
What CETA requires
CETA sets a multi-decade timeline for the state's electric utilities:
- By 2025–2026: Utilities must eliminate coal-fired electricity from the power they sell to Washington customers.
- By 2030: All electricity sold in the state must be greenhouse-gas neutral — meaning any remaining emissions must be offset through renewable energy credits, efficiency investments, or other approved mechanisms.
- By 2045: The state's electricity supply must be 100% carbon-free, with no offsets allowed — actual clean generation, not accounting adjustments.
Why it matters beyond the power grid
CETA is specifically about electricity, not heating oil or natural gas directly — so it doesn't regulate oil furnaces the way it regulates utilities. But it shapes the broader energy landscape homeowners live in: as electricity gets cleaner, incentives for switching from oil heat to electric heat pumps have grown, and several state and utility programs now offer rebates for that kind of conversion.
Equity provisions
The law also requires utilities to track and report on how the benefits of the clean energy transition are distributed — with particular attention to highly impacted communities and vulnerable populations, including through required Clean Energy Implementation Plans utilities must file with the state every four years.
What's changed recently
In December 2025, Washington's governor issued an executive order directing the state Department of Commerce to form a team focused on removing barriers to new clean energy projects — a response to the fact that permitting and transmission bottlenecks have slowed development in recent years. Several related bills on siting, permitting, and transmission capacity were under consideration in the state legislature's 2026 session.
Where heating oil fits into a changing landscape
None of this means oil heat is disappearing overnight — plenty of Seattle homes, especially older ones without ductwork, continue to rely on oil furnaces, and heating oil delivery remains a normal part of the city's infrastructure. But the state's broader direction is clear enough that it's worth understanding if you're planning long-term for your home's heating system.