Table A.3.
CO2 emissions and consumption of coal, natural gas and oil per Mtoe.
| (i) Advanced |
(ii) Emerging |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| coal | gas | oil | total | coal | gas | oil | total | |||||
| (a) Our consumption | 851.1 | 1725.1 | 2108.9 | 4685.1 | 2683.7 | 533.4 | 1472.5 | 4689.6 | ||||
| (b) BP consumption | 866.5 | 1201.9 | 1935.7 | 4004.1 | 2596.0 | 597.4 | 1431.3 | 4624.8 | ||||
| (c) Emission Factors | 3.96 | 2.35 | 3.07 | 3.96 | 2.35 | 3.07 | ||||||
| (d) CO2 (a)×(c) | 3370.2 | 4054.1 | 6474.4 | 13,898.6 | 10,627.5 | 1253.4 | 4520.7 | 16,401.6 | ||||
| (e) CO2 (b)×(c) | 3431.3 | 2824.5 | 5942.6 | 12,198.3 | 10,280.2 | 1403.9 | 4394.2 | 16,078.4 | ||||
| (f) BP CO2 | 11,023.9 | 14,988.2 | ||||||||||
| (g) log((d)/(e)) (%) | −1.8% | 36.1% | 8.6% | 13.0% | 3.3% | −11.3% | 2.8% | 2.0% | ||||
| (h) log((e)/(f)) (%) | 10.1% | 7.0% | ||||||||||
| (i) log((d)/(f)) (%) | 23.2% | 9.0% | ||||||||||
| (iii) EU+ |
Total (i) + (ii) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| coal | gas | oil | total | coal | gas | oil | total | |||||
| (a) Our consumption | 164.3 | 480.5 | 553.5 | 1198.3 | 3534.8 | 2258.5 | 3581.5 | |||||
| (b) BP consumption | 165.7 | 288.5 | 517.4 | 971.6 | 3462.5 | 1799.3 | 3367.0 | 8628.8 | ||||
| (c) Emission Factors | 3.96 | 2.35 | 3.07 | 3.96 | 2.35 | 3.07 | ||||||
| (d) CO2 (a)×(c) | 650.8 | 1129.2 | 1699.2 | 3479.1 | 13,997.7 | 5307.5 | 10,995.1 | 30,300.2 | ||||
| (e) CO2 (b)×(c) | 656.2 | 677.9 | 1588.5 | 2922.6 | 13,711.5 | 4228.4 | 10,336.8 | 28,276.7 | ||||
| (f) BP CO2 | 2651.6 | 26,012.1 | ||||||||||
| (g) log((d)/(e)) (%) | −0.8% | 51.0% | 6.7% | 17.4% | 2.1% | 22.7% | 6.2% | 6.9% | ||||
| (h) log((e)/(f)) (%) | 9.7% | 8.3% | ||||||||||
| (i) log((d)/(f)) (%) | 27.2% | 15.3% | ||||||||||
Note: The difference between our CO2 emission estimates (d) and those of BP (f) for total emissions is 15.3%. This discrepancy is wider for advanced economies (23.2%) than for emerging economies (9.0%). This difference can be decomposed into two parts: that from converting energy consumption into emissions (h) and that associated with the calculation of consumption (g). Our simple conversion method using the factor (c) tends to overestimate emissions by 7.0%–10.1%, which is in line with BP's note according to footnote 15. The other source of discrepancy related to consumption calculation is negligible for coal and moderate for oil, but substantial for natural gas. The difference between our natural gas consumption figures (a) and those of BP (b) are reported in (g) as 36.1%, −11.3%, and 22.7% for the Advanced, Emerging and Total groups, respectively. Since natural gas is far more used by the advanced group, the discrepancy in emission estimates due to the difference in energy consumption is larger for this group: these (g) are 13%, 2.0% and 6.9% for advanced, emerging and total, respectively.