DEQ, along with other state agencies, has compiled data that estimates the many different ways Oregon and Oregonians contribute to global greenhouse gas emissions, from driving cars and using electricity to buying and making goods.
For the first time actual emissions reported to DEQ by electric utilities, fuel suppliers, and industrial facilities have been used to better understand our state’s greenhouse gas emissions. Previous estimates have been based largely on models.
The report looks at emissions from three different perspectives:
Emissions from in-state sources
Worldwide emissions associated with satisfying Oregonians’ consumption
An expanded look at the transportation sector
We believe Oregon is the first state to publish a greenhouse gas inventory using more than one accounting perspective. This offers Oregonians a more comprehensive understanding of where emissions come from. Oregon is also one of the first states to estimate global emissions resulting from local consumption.
What we’ve learned
Oregon’s emissions are no longer increasing. The state’s in-boundary emissions grew most years since estimates began in 1990, but beginning in 2007 this trend reversed and small annual declines were measured through 2010. The consumption-based inventory and transportation sector inventory corroborate this, showing no change or a modest decline in emissions in recent years.
Viewed from the perspective of consumption, the purchase and use of vehicles, use of appliances (especially furnaces), and purchase of food contribute almost half of all emissions.
The greenhouse gas inventory report will help Oregon’s Legislature, Global Warming Commission, and others understand how Oregon contributes to emissions and how these emissions are changing over time.