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How Oregonians contribute to greenhouse gas emissions
ghgbargraph.jpgDEQ, 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 Department of Energy, Department of Transportation and DEQ collaborated to create a comprehensive greenhouse gas inventory report.

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.
  • Looking at in-state sources of emissions, use of gasoline (in vehicles) and electricity (by households and businesses) contribute the most to emissions.
  • Transportation emissions are important in all three inventories. Household vehicle use dominates, but has declined slightly in recent years. Emissions from freight are growing rapidly.
  • 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.
  • Overall, households contribute more to emissions from their purchase of materials (food, other products) than their purchase of electricity or fuels.
  • Most of the emissions associated with food and other materials are a result of production, not freight or disposal.
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.
Read the full report
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