CO2 Emissions throughout Oil's Life Cycle
| Stage | Crude oil extraction | Crude oil transportation | Refining | Product transportation | Product use | Total |
|---|---|---|---|---|---|---|
| Energy consumption (TJ) | 26,298 | 12,903 | 70,913 | 2,326 | 1,001,261 | 1,113,700 |
| CO2 emissions (thousand tons-CO2) | 1,466 | 882 | 4,847 | 161 | 68,253 | 75,609 |
| SOx emissions (t) | 20,214 | 19,208 | 5,105 | 1,740 | 152,393 | 198,660 |
| NOx emissions (t) | 3,243 | 23,793 | 2,901 | 3,370 | - | - |
Figures include estimates based on the actual production volumes of petroleum products in fiscal 2006.
Figures for "Crude Oil Extraction," "Crude Oil Transportation," and "Product Transportation and Stockpiling (Oil Depots) *SOx and NOx only," are estimated based on LCI for Petroleum Products by Fuel and Environmental Impact Assessment for Petroleum Products published in March 2000 by the Japan Petroleum Energy Center (JPEC).
CO2 emissions for Refining (Refineries) and Product Transportation were calculated in accordance with the Guidelines for Accounting Greenhouse Gas Emissions from the Industry (Draft) published by the Ministry of the Environment and the Ministry of Economy, Trade and Industry.
See website for methods and basis of "Product Use" calculations.
Energy consumption is calculated in accordance with the stipulations of the Energy Conservation Law regarding the rational use of energy.
“Refining (Refineries)" includes data from the Yokkaichi Kasumi Power Station and Cosmo Matsuyama Oil Co., Ltd.
Electricity sold refers to power sold by Chiba Oil Refinery, Yokkaichi Kasumi Power Station, and Cosmo Matsuyama Oil Co., Ltd. CO2 emissions from refining (refineries) is the amount after deducting the portion of CO2 emissions that results from generating electricity sold. Conversely, the purchased power portion of CO2 emissions is included in "Refining (Refineries)" data.
Steam sold refers to steam sold by the Chiba Refinery and Cosmo Matsuyama Oil Co., Ltd. CO2 emissions from refining (refineries) is the amount after deducting the portion of CO2 emissions that results from generating steam sold.
CO2 emissions attributable to the construction of facilities are not included.
“Product Use" SOx emission data is for reference. It is estimated from the sulfur content of products without taking sulfur reduction during use into consideration. Accordingly, actual SOx emissions are lower than the estimate.
With regard to "Product Use" CO2, in addition to CO2 emissions resulting from the use of products, CO2 emissions attributable to generating electricity and steam sold are estimated separately.
Naphtha used mainly as a petrochemical material does not directly emit CO2 or SOx. However, naphtha is treated in the same way as the other petroleum products when the "Product Use" CO2 and SOx emissions are calculated.
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