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Note: Operating Return on Investment (Actual Operating ROI) = operating income as a percent of net property, plant, and equipment (PP&E). Operating ROI excluding financial effects of environmental requirements = operating income less environmental operating costs less environmental depreciation expenses as a percent of net PP&E less environmental net PP&E.
Sources: Energy Information Administration, Form EIA-28 (Financial Reporting System); American Petroleum Institute, Petroleum Industry Environmental Performance (Washington, DC, May 1997); and American Petroleum Institute, U.S. Oil and Natural Gas Industry's Environmental Expenditures (Washington, DC, February 2003).
Last Updated on May 16, 2003.
File name: http://www.eia.doe.gov/emeu/perfpro/ref_pi2/fig8.html
By Financial Analysis Team, Office of Energy Markets and End Use, Energy Information Administration
Email: jon.rasmussen@eia.doe.gov