the period. Two thirds of the total differences in transformation indexes occur
within the regions considered. That is, the greater contribution to global
differences in energy transformation efficiency occurs particularly within the
relatively homogenous groups of countries taken into account.
The interaction factor plays a very important role in intra-group global
inequalities of energy intensity, particularly at the end of the period. The
negative sign on this factor suggests that countries that are more efficient in
energy transformation are most likely the more intensive ones in final energy
consumption, and this tends to offset inequalities.
Table 5. Multiplicative factorial energy intensity inequality decomposition
by region for 1971, 1990 and 2006.
|
Energy |
Transformation |
Final use |
Interaction | ||
|
intensity |
weight | ||||
|
OECD |
0.0635 |
30.5% |
0.0048 (7.5%) |
0.0477 (75.2%) |
0.0110 (17.3%) |
|
1990 |
0.0372 |
26.8% |
0.0029 (7.8%) |
0.0297 (79.9%) |
0.0046 (12.3%) |
|
2006 |
0.0148 |
21.9% |
0.0030 (20.4%) |
0.0107 (71.8%) |
0.0011 (7.7%) |
|
North America 1971 |
0.0243 |
25.8% |
0.0002 (0.7%) |
0.0232 (95.7%) |
0.0009 (3.7%) |
|
1990 |
0.0052 |
25.3% |
0.0006 (11.1%) |
0.0063 (121.2%) |
-0.0017 (-32.3%) |
|
2006 |
0.0038 |
23.2% |
0.0005 (12.7%) |
0.0072 (189.7%) |
-0.0039 (-102.4%) |
14