Data sources for the energy indicator

Highway gasoline and diesel consumption: Long-term trends in the Northwest states and the United States from US Department of Transportation, US Federal Highway Administration, Office of Highway Policy Information, Highway Statistics Series, Tables MF-226, MF-27, and MF-21, www.fhwa.dot.gov/policy/ohpi/qffuel.cfm. Note that Sightline has substituted estimates derived from state data for federal data in occasional instances in which the federal series contains unexpected anomalies.

Long-term trends for British Columbia and Canada from Statistics Canada, Table 128-0002, "Supply and demand of primary and secondary energy in terajoules, quarterly," and Table 128-0009, "Supply and demand of primary and secondary energy in terajoules, annual" availble through CanSim. Fuel consumption includes "road transport and urban transit" and "retail pump sales" for motor gasoline and diesel fuel oil.

Recent trends estimated from data provided by state and provincial taxation agencies, including: Idaho State Tax Commission; Washington State Department of Licensing; Oregon Department of Transportation, Fuels Tax Group, www.oregon.gov/ODOT/CS/FTG/tdreports.shtml; and British Columbia Ministry of Finance and Corporate Relations. Recent diesel trends for Oregon estimated from US Department of Energy, Energy Information Administration, Petroleum Navigator: "Oregon No 2 Diesel Adjusted Sales/Deliveries to On-Highway Consumers (Thousand Gallons)," tonto.eia.doe.gov/dnav/pet/hist/k2dvahsor1a.htm, and "Oregon Prime Supplier Sales of Petroleum Products," tonto.eia.doe.gov/dnav/pet/pet_cons_prim_dcu_SOR_m.htm.

Residential and commercial electricity consumption: Long-term trends in the Northwest States and United States from State Energy Data System, www.eia.doe.gov/emeu/states/_seds.html. Electricity data includes residential and commercial consumption, but excludes any associated energy "losses" from generation and transmission.

Long-term trends for British Columbia and Canada from Statistics Canada, Table 128-0002, "Supply and demand of primary and secondary energy in terajoules, quarterly," and Table 128-0009, "Supply and demand of primary and secondary energy in terajoules, annual" availble through CanSim. Electricity consumption includes "Primary electricity, hydro and nuclear" for the "residential," "commercial and other institutional," and "public administration" sectors.

Recent trends from US Department of Energy, Energy Information Administration, "Form EIA-826 Database - Monthly Electric Utility Sales and Revenue Data," www.eia.doe.gov/cneaf/electricity/page/eia826.html. Note that the most recent monthly data in the EIA-826 database represents a model-based estimate from a sampling of large utilities; but older data represents estimates derived by EIA from the form EIA-861 database, which represents complete annual survey of all utilities.

Recent trends for British Columbia estimated from BCHydro, "BCHydro - Quarterly Reports," www.bchydro.com/info/reports/reports855.html and "BCHydro - Annual Reports," www.bchydro.com/info/reports/reports853.html.

Spending on fossil fuel imports in Northwest states: Long-term consumption of coal, natural gas, and petroleum from State Energy Data System, www.eia.doe.gov/emeu/states/_seds.html.

Recent petroleum consumption trends estimated from the direction magnitude of changes in highway fuel consumption, by state. Petroleum prices from 2004 through the most recent year from US Department of Energy, Energy Information Administration, Petroleum Navigator, "Refiner acquisition cost of crude oil," for the West Coast (Petroleum Area Defense District 5), tonto.eia.doe.gov/dnav/pet/pet_pri_rac2_dcu_nus_m.htm. Prior to 2004, petroleum prices taken from US Department of Energy, Energy Information Administration, Petroleum Navigator: "Domestic Crude Oil First Purchase Prices by Area," for the U.S. less Alaskan North Slope, tonto.eia.doe.gov/dnav/pet/pet_pri_dfp1_k_m.htm. (Note: In recent years, U.S. less Alaskan North Slope prices have closely mirrored trends in PADD 5 refiner acquisition costs; but data for the latter trend are unavailable prior to 2004.)

Recent natural gas consumption trends from US Department of Energy, Energy Information Administration, Natural Gas Navigator, "Natural gas consumption by end use," by state, tonto.eia.doe.gov/dnav/ng/ng_cons_sum_dcu_nus_m.htm . Natural gas prices are "city gate" prices from US Department of Energy, Energy Information Administration, Natural Gas Navigator, "Natural gas prices," by state, http://tonto.eia.doe.gov/dnav/ng/ng_pri_sum_dcu_nus_m.htm.

Data on coal prices and consumption are typically delayed by several years, and may not be available for all states. Sightline uses consumption in the most recent year with complete data as a proxy for consumption in subsequent years, and may use prices for one state as proxies for prices in an adjacent state. Recent annual coal consumption from US Department of Energy, Energy Information Administration, "U.S. Coal Consumption by End Use Sector, by Census Division and State" www.eia.doe.gov/cneaf/coal/page/acr/table26.html. Recent annual coal prices from US Department of Energy, Energy Information Administration, "Average Price of Coal Delivered to End Use Sector by Census Division and State" http://www.eia.doe.gov/cneaf/coal/page/acr/table34.html. Long-term coal prices from US Department of Energy, Energy Information Administration, "Coal Industry Annuals / Annual Coal Reports: Archive" www.eia.doe.gov/cneaf/coal/page/acr/backissues.html.

A note about the energy target: The German energy "target" likely overstates actual consumption of residential and commercial electricity. When the Scorecard was launched, Sightline estimated Germany's non-industrial electricity consumption based on total residential and commercial energy consumption in Germany, and on residential and commercial electricity consumption in the Northwest as a share of total residential and commercial energy consumption. But a recent publication of consistent, cross-national European energy data shows that Geman electricity use in 2001 was far lower than Sightline estimated. This is in part due to greater overall energy efficiency in Germany than in the Northwest states, but also to a history of cheap electricity in the Northwest that has boosted electricity demand, particularly for home and water heating -- which represents a significant share of the Northwest's electricity consumption, but is largely absent in most other parts of the world. For the sake of consistency with previous editions of the Scorecard, Sightline will retain the existing energy target for the time being, but will likely recalibrate the Scorecard targets in an upcoming revision of the Scorecard.

General note: For all data, figures for the most recent year may be estimated from partial-year data.

(Sources updated January 2009.)