|
Total energy consumption
by business group
| 2004 |
 |
 |
|
| A |
|
Bauxite and Alumina |
|
18.2% |
| B |
|
Primary Metal |
|
66.4% |
| C |
|
Rolled Products Americas and Asia |
|
4.6% |
| D |
|
Rolled Products Europe |
|
3.7% |
| E |
|
Engineered Products |
|
3.1% |
| F |
|
Packaging |
|
4.0% |
|
Alcan historical energy consumption
|
|
|
Alcan smelters
in kW-h/kg aluminum |
| |
|
|
| 2004 |
|
14.9 |
|
|
|
| 2003 |
|
15.2 |
|
|
|
| 2002 |
|
15.1 |
|
|
|
| 2001 |
|
15.4 |
|
|
|
| 2000 |
|
15.9 |
|
|
|
| 1999 |
|
15.8 |
Total energy consumption
|
|
|
| in millions of GJ |
| |
|
|
| 2004* |
|
415 |
|
|
|
| 2003** |
|
293.9 |
|
|
|
| 2002** |
|
295.1 |
| The increase in total energy consumption in 2004 is
largely due to Pechiney acquisition. |
| * |
Alcan started in 2004 to report the energy used by installations
on site, excluding efficiency for energy production off site. This figure
is more representative for the efficiency of Alcan's own processes,
the total amount being 256 million GJ in 2004. |
| ** |
Energy figures for 2002 and 2003 include about 10% of
energy used for transportation of products to customers. The transportation
energy will not be included in the energy figures in the future as the accuracy
is much lower than for the other energy data. |
Total energy consumption rate
|
|
|
| in GJ/US$ sales |
| |
|
|
| 2004 |
|
0.017 |
|
|
|
| 2003 |
|
0.021 |
|
|
|
| 2002 |
|
0.024 |
| The total energy consumption includes all the direct
energy sources used on site as well as the indirect energy sources to produce
the energy consumed by Alcan sites as electricity, heat and steam (this
means it includes efficiency of energy generation off site). |
Alcan's total energy mix
all operations
| 2004 |
|
 |
|
| A |
|
Renewable |
|
31% |
| B |
|
Natural Gas |
|
12% |
| C |
|
Nuclear |
|
7% |
| D |
|
Petroleum |
|
24% |
| E |
|
Coal |
|
26% |
|
| 2003 |
|
 |
|
| A |
|
Renewable |
|
44% |
| B |
|
Natural Gas |
|
13% |
| C |
|
Nuclear |
|
1% |
| D |
|
Petroleum |
|
17% |
| E |
|
Coal |
|
25% |
|
| 2002 |
|
 |
|
| A |
|
Renewable |
|
45% |
| B |
|
Natural Gas |
|
13% |
| C |
|
Nuclear |
|
0% |
| D |
|
Petroleum |
|
17% |
| E |
|
Coal |
|
25% |
|
| Today, about 31% of the energy used by Alcan is from
clean, renewable hydroelectric sources. With the acquisition of Pechiney,
the energy mix changed to include more nuclear and petroleum-based sources.
For smelting, 66% of the energy used has no GHG emissions, of which 57%
is based on hydroelectricity and 9% on nuclear. |
Energy mix
Alcan smelting operations only
| 2004 |
|
 |
|
| A |
|
Renewable |
|
57% |
| B |
|
Natural Gas |
|
6% |
| C |
|
Nuclear |
|
9% |
| D |
|
Petroleum |
|
2% |
| E |
|
Coal |
|
26% |
|
Total water use
|
|
|
| in millions of m3 |
| |
|
|
| 2004 |
|
254.8 |
|
|
|
| 2003 |
|
177.8 |
|
|
|
| 2002 |
|
163.56 |
| The increase in total water use is due to the Pechiney
acquisition. |
Total water use rate
|
|
|
| in millions of m3 per million of US$
sales |
| |
|
|
| 2004 |
|
0.0102 |
|
|
|
| 2003 |
|
0.0128 |
|
|
|
| 2002 |
|
0.0131 |
| Alcan demonstrated significant improvement in 2004,
reducing its rate of water consumption. GO-PDM, a data collection tool that
will improve the ability to assess its use of water resources and identify
opportunities for improving performance, is currently being implemented. |
Water consumption by source
| 2004 |
|
 |
|
| A |
|
Ground water |
|
31% |
| B |
|
Seawater |
|
32% |
| C |
|
Surface water |
|
29% |
| D |
|
Water from public network |
|
8% |
|
| 2003 |
|
 |
|
| A |
|
Seawater (cubic metres) use for power |
|
38% |
| B |
|
Tank/Rainwater (cubic metres) |
|
7% |
| C |
|
Fresh surface water river/lake (cubic metres) |
|
29% |
| D |
|
Alcan-owned well/bore hole water (cubic metres) |
|
19% |
| E |
|
Public net drinking water (cubic metres) |
|
6% |
| F |
|
Water recycled from bauxite residue lakes |
|
1% |
|
| Alcan's definitions of water sources were modified between
2003 and 2004. |
|
