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At Chevron, we strive to be transparent and improve our reporting on sustainability-related topics to help provide comparable and decision-useful information for investors and other stakeholders. We are working with peers, stakeholders and regulators to achieve greater consistency and comparability of reporting. Data reflects metrics as currently reported in our 2021 Corporate Sustainability Report.

Click here to download our Portfolio Carbon Intensity Calculator, a spreadsheet that calculates the Portfolio Carbon Intensity of marketed energy products and greenhouse gas removals for energy companies. The tool is subject to Chevron's website terms of use.

For voluntary reporting, we consider the reporting guidelines, indicators and terminology in the Sustainability Reporting Guidance for the Oil and Gas Industry (2020) by Ipieca, the International Association of Oil and Gas Producers (IOGP), and the American Petroleum Institute (API). We also consider other leading reporting frameworks, such as the Stakeholder Capitalism metrics developed by the World Economic Forum, to determine which data to include in our tables. Chevron uses the World Resources Institute/World Business Council for Sustainable Development Greenhouse Gas Protocol: A Corporate Accounting and Reporting Standard (2015) definition of three “scopes” to report GHG emissions.

  1. See “equations” section, Portfolio Carbon Intensity, pages 76–78.
  2. See “equations” section, Upstream Carbon Intensity, pages 78–79.
  3. See “equations” section, Refining Carbon Intensity, page 79.
  4. See “equations” section, Enabled Reductions, page 80. Variability in Enabled Reductions may occur due to Chevron’s current practice of reporting offsets in the calendar year in which they were retired. See footnote 21 for more information on offsets.
  5. Unless otherwise noted, Scope 1 and Scope 2 data collected as of January 31, 2022. Data include estimates.
  6. Scope 1 includes direct emissions. For reporting, Chevron includes indirect sources of GHG emissions within Scope 1 that are outside of the traditional Scope 1 definition such as GHG emissions from processes like drilling and completions, and tolling agreements up to the point of third-party custody transfer of the oil or gas product. Direct GHG emissions related to production of energy in the form of electricity or steam exported or sold to a third party are included in the reported Scope 1 emissions to align with Ipieca’s Sustainability Reporting Guidance for the Oil and Gas Industry (2020). Chevron’s Scope 1 includes emissions of six Kyoto GHGs – carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), sulfur hexafluoride, perfluorocarbons and hydrofluorocarbons.
  7. Calculation methods for Scope 1 and Scope 2 GHG emissions are based on the American Petroleum Institute’s Compendium of Greenhouse Gas Emissions Methodologies for the Oil and Natural Gas Industry (2009) or, where relevant, local regulatory reporting methodologies.
  8. When a nonoperated joint venture (NOJV) provides consolidated emissions data, Chevron seeks to allocate its equity share of those emissions to the most representative scope and GHG based on best available knowledge of the NOJV’s operations.
  9. Consistent with our financial accounting, Venezuela NOJV emissions are not included for 2021 emissions reporting.
  10. We provide methane emissions data and intensity performance as a mass of methane as well as its conversion under the Intergovernmental Panel on Climate Change Fourth Assessment Report (AR4) 100-year global warming potential (GWP) to a CO2e. Although we strive to provide consistent data from our operated and nonoperated assets, some nonoperated assets may provide their data only on a CO2e basis. Given the common industry practice of using the AR4 100-year GWP, we have assumed that nonoperated assets that did not provide methane mass data use a 100-year GWP of 25. We continue to work with our joint-venture partners to provide information on a standardized basis to increase transparency.
  11. Downstream includes emissions from refineries, terminals, marketing and distribution including renewable fuels. Chemical and base oil facilities located within refineries are included in refinery emissions.
  12. Chemicals includes emissions from stand-alone chemical, additive and lubricant facilities.
  13. Chevron Phillips Chemical Company LLC data collected as of April 7, 2022.
  14. Other emissions include GHG emissions from Corporate Aviation, Chevron Environmental Management and Real Estate Company, energy management and power from Chevron Pipeline and Power, and the North American Data Center.
  15. Exported emissions are direct GHG emissions related to production of energy in the form of electricity or steam that are exported or sold to a third party. Direct GHG emissions related to production of energy in the form of electricity or steam exported or sold to a third party are included in the reported Scope 1 emissions for each segment.
  16. Scope 2 includes indirect emissions from imported electricity and steam. CO2, CH4 and N2O are accounted for in Chevron’s Scope 2 emissions. Scope 2 emissions are accounted for using the market-based approach as described in the World Resources Institute’s GHG Protocol Scope 2 Guidance (2015), including calculating Scope 2 emissions net of contractual instruments such as renewable energy credits (REC).
  17. The scope of verification for reporting year 2021 includes portfolio carbon intensity, upstream carbon intensities, refining carbon intensity, enabled reductions as well as total Scope 1, total Scope 2 and Scope 3 Category 11 use of sold products on both an equity share and operational control basis. For 2017–2020, third-party verification covers Chevron’s total Scope 1 and total Scope 2 equity emissions, as first reported in Chevron’s Corporate Sustainability Report for each reporting year. Annual third-party verification does not include Chevron’s equity-share emissions for CPChem.
  18. Chevron calculates emissions from third-party use of sold products in alignment with methods in Category 11 of Ipieca’s Estimating Petroleum Industry Value Chain (Scope 3) Greenhouse Gas Emissions (2016). Emissions are based on aggregate production, throughput and sales numbers that include renewable fuels.
  19. Carbon capture, utilization and storage includes both CO2 sold to third parties and CO2 (and other gas) injected for carbon storage.
  20. RECs are credits generated from renewable electricity generation within the United States that are retired by Chevron. Reported Scope 2 emissions are net of contractual instruments such as RECs.
  21. Offsets are credits generated from the avoidance or reduction of GHG emissions or the removal of GHGs from the atmosphere that are purchased or developed and then retired by Chevron, excluding RECs. Includes offsets retired in compliance programs. For programs with multiyear compliance periods, offsets are reported in the calendar year they are retired except for 2017 where offsets were apportioned to the compliance obligation for that year.
  22. Total Energy Consumption includes energy generated from Chevron’s operations and imported energy. Exported energy is not subtracted from the total.
  23. Manufacturing Energy Index (MEI) (Refining) is an analysis of Chevron’s refining energy performance based on the Solomon Energy Intensity Index methodology. Chevron’s MEI includes the refining assets at Chevron’s operated and nonoperated joint-venture refineries.
  24. 2021 Upstream Energy Intensity reflects continued improvements in Chevron’s calculation methodology.
  25. Pipeline Energy Intensity covers assets operated by Chevron Pipeline Company. Pipeline Energy Intensity for 2020 and 2021 does not include legacy assets acquired from Noble Midstream Partners LP.
  26. Chevron’s Non-Manufacturing Energy Index includes operations from Chevron’s chemicals and additives, products and services, and lubricants businesses. It reflects the energy required to produce Chevron’s products compared with the energy that would have been required to produce the same products in 1992 (the index’s base year).
  27. For compiling and reporting air emissions data, Chevron follows regulatory definitions of VOC. SOX emissions include SO2 and SO3, reported as SO2-equivalent. NOX emissions include NO and NO2 (reported as NO2- equivalent) and exclude N2O.
  28. SOX and VOC emissions increased in 2021 due to production activity increases and inclusion of first full-year emissions of newly acquired and recommenced assets.
  29. Fresh water withdrawn from the environment is defined per local legal definitions. If no local definition exists, fresh water is defined as water extracted, directly or indirectly, from surface water, groundwater or rainwater that has a total dissolved solids concentration of less than or equal to 2,000 mg/L. Fresh water withdrawn does not include effluent or recycled/reclaimed water from municipal or other industrial wastewater treatment systems, as this water is reported under nonfresh water withdrawn. Nonfresh water withdrawn could include: seawater; brackish groundwater or surface water; reclaimed wastewater from another municipal or industrial facility; desalinated water; or remediated groundwater used for industrial purposes. Produced water is excluded from fresh water withdrawn, fresh water consumed and nonfresh water withdrawn. Water quantities may be determined using direct measurement techniques or engineering estimation methods.
  30. Refining includes data from refineries, including chemical and base oil facilities located within refineries.
  31. Other includes, but is not limited to, chemical and lubricant facilities, as well as Chevron Environmental Management and Real Estate Company.
  32. Chevron calculates fresh water withdrawn intensity for Upstream using gross operated production.
  33. Chevron calculates fresh water withdrawn intensity for refining using total refinery inputs, which comprise all feeds into the refinery. This includes purchased crudes for crude units and third-party feeds for other processing units.
  34. Chevron reports fresh water withdrawn and consumed in water-stress regions according to World Resources Institute’s definition and categorization of “baseline water stress.” Baseline water stress measures the ratio of total water withdrawals to available renewable surface and groundwater supplies. Water withdrawals include domestic, industrial, irrigation and livestock consumptive and nonconsumptive uses. Available renewable water supplies include the impact of upstream consumptive water users and large dams on downstream water availability. Higher values indicate more competition among users.
    Chevron’s fresh water withdrawn and consumed in high and extremely high water-stress areas excludes: Chevron’s Fuels & Lubricants business and the Technology, Projects and Services (TP&S) organization. Freshwater withdrawals for the Fuels & Lubricants business and TP&S are minimal (0.7% of the total) compared with the overall use in the corporation. For purposes of this reporting, Chevron categorizes all of the water withdrawn and consumed by Chevron’s Mid-Continent business unit as being in a high-stress or extremely high-stress region.
  35. Oil concentration is determined by the sampling of effluent streams, using methods required or recommended by regulatory agencies or authorities, where applicable. Chevron reports the total cumulative amount of oil discharged to surface water excluding spills, which are reported separately.
  36. Chevron reports petroleum spills to land and water to conform to the 2020 Ipieca Reporting Guidance. Spills to land and water that are greater than or equal to one barrel are included. Spills to secondary containment, chemical spills and spills due to sabotage are excluded. 
  37. To conform to the 2015 and 2020 Ipieca Reporting Guidances, and where appropriate information and data exist, our hazardous waste numbers starting in 2015 exclude remediation waste generated; disposed of; and recycled, reused or recovered. Hazardous waste amounts are quantified using methods required or recommended by regulatory agencies or authorities, where applicable. In other instances, similar methods are used, including direct measurement onsite or at the point of shipping, engineering estimates and process knowledge. Chevron follows the regulatory definitions of hazardous waste applicable to the jurisdictions in which we operate, including de minimis specifications (below which hazardous waste quantities do not need to be reported).
  38. The 2021 data are based on information received from government entities and recorded internally as of April 7, 2022.
  39. Global employee diversity and U.S. Equal Employment Opportunity Commission (EEOC) percentages have been rounded to the nearest whole number. Global data are as of December of the year identified. Although gender is not binary, gender is currently reported in binary (men, women) terms to align with U.S. government reporting regulations. Our most recently filed Federal Employer Information Report EEO-1 is available for download at EEO-1/EEOC gender and ethnicity counts differ from those in the Global Employee Diversity table due to differences that may vary from other methodologies. For the Global Employee Diversity table, “gender data not available” means data were not collected or employee chose not to disclose, and service station employee data are not included unless specifically stated.
  40. Ethnicities with representation of less than 2 percent such as, but not limited to, Native Americans, Pacific Islanders, and Two or More Races.
  41. This is not a precise year-over-year comparison. For 2020, some but not all employees for whom gender data were not available were counted as men or women using visual identification in accordance with U.S. EEOC guidelines. For 2021, visual identification was not used and is only used in the U.S. EEOC Statistics table.
  42. Data collected for year 2021 on February 7, 2022. For year 2020, data collected as of February 24, 2021. For year 2019, data collected as of January 23, 2020. For years 2017–2018, data collected as of February 20, 2019.
  43. This section reflects Chevron data collected as of March 14, 2022. Health and  safety performance rates include both injury and illness-related incidents.
  44. Serious injuries are injuries that result in significant disfigurement, or typically result in permanent or long-term impairment of an internal organ, body function or body part.
  45. Data include catastrophic and major incidents only, as defined in the International Association of Oil and Gas Producers (IOGP) Land Transportation Safety Report 365.
  46. Process Safety Tier 1 loss-of-primary-containment (LOPC) events are unplanned or uncontrolled releases resulting in consequences equivalent to those specified by American National Standards Institute/American Petroleum Institute (ANSI/API) Recommended Practice (RP) 754 and IOGP Report 456: Process Safety Recommended Practice on Key Performance Indicators