Geology Reference
In-Depth Information
Table 11.11: The exergy of the world's coal proven reserves reported in WEC
(2010). Values stipulated are in million tonnes if not otherwise specified. -
continued from previous page.
Country
Anthracite
Bitumin.
Subbitum.
Lignite
Exegy, Mtoe
Portugal
3
33
16
Romania
10
1
280
123
Russian Federa-
tion
49,088
97,472
10,450
94,606
Serbia
9
361
13,400
5,751
Slovakia
2
260
109
Slovenia
24
199
96
Spain
200
300
30
324
Ukraine
15,351
16,577
1,945
21,002
United Kingdom
228
158
Total Europe
70,175
115,379
79,473
148,055
Iran
(Islamic
1,203
832
Rep.)
Total Middle
East
1,203
0
0
832
Australia
37,100
2,100
37,200
42,240
New Caledonia
2
1
New Zealand
33
205
333
279
Total Oceania
37,135
2,305
37,533
42,520
TOTAL
WORLD
108,501
296,261
260,789
195,387
518,048
End of the table
The exergy of coal proven reserves is 518 Gtoe (Table 11.11). The 2010 produc-
tion data from WEC (2010) in exergy terms is equal to 4.3 Gtoe. Similarly, WEC
(2010) reports additional resources amount in place 8 and estimated additional re-
coverable reserves 9 as at least 1,965 Gt (1,099 Gtoe in exergy terms) and 965 Gt
(506 Gtoe), respectively.
It should be mentioned, that in order to undertake the exergy assessment, dif-
ferent assumptions had to be made, such as taking into consideration only four
different classes of coal, with identical composition and high heating value. Never-
theless, the error introduced by this assumption is anticipated to be much smaller
than the one created in the estimation of proven reserves. According to EWG (2007)
data quality of coal reserves is poor, both on a global and national level with no
objective way in which to determine the availability of data.
8 The estimated additional resources amount in place is the indicated and inferred tonnage addi-
tional to the proved amount that is of foreseeable economic interest. Speculative amounts are not
included.
9 The estimated additional recoverable reserves refers to the tonnage within the estimated ad-
ditional amount in place that geological and engineering information indicates with reasonable
certainty might be recovered in the future.
 
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