Additional Environmental Performance Indicators (2005–2007)

Emissions Statistics (for Utility-retained generation only)1
(Additional statistics on the greenhouse gas emissions associated with PG&E's delivered electricity are available on the following pages: emissions rates, emissions sources.)
 
2005
2006
2007
Total NOX Emissions (tons)
1,084
982
1,123
Hunters Point2
133
39
N/A
Humboldt Bay
951
943
1,123

 
NOX Emissions Rates (lbs/MWh)
 
 
 
Hunters Point
0.39
0.38
N/A
Humboldt Bay
4.10
4.08
4.65
Fossil Plants
1.90
2.94
4.65
All Plants
0.06
0.06
0.08

 
Total SO2 Emissions (tons)
6.77
663
433
Hunters Point
3.33
1
N/A
Humboldt Bay
3.44
65
43

 
SO2 Emissions Rates (lbs/MWh)
 
 
 
Hunters Point
0.0098
0.01
N/A
Humboldt Bay
0.0149
0.28
0.18
Fossil Plants
0.0119
0.2000
0.1781
All Plants
0.00041
0.00388
0.0031

 
Total CO2 Emissions (tons)4
736,581
465,163
353,140
Hunters Point
398,549
122,838
N/A
Humboldt Bay
338,032
342,325
353,140

 
CO2 Emissions Rates (lbs/MWh)4
 
 
 
Hunters Point
1,296
1,348
N/A
Humboldt Bay
1,536
1,550
1,462
Fossil Plants
1,396
1,491
1,462
All Plants
49
28
26

 
Other Emissions Statistics
SF6 Emissions
2005
2006
2007
Total SF6 Emissions (pounds)
7,396
5,539
3,928
Total SF6 Emissions (tons CO2-equivalent)
88,382
66,191
46,940
SF6 Emissions Leak Rate
2.6%
1.9%
1.3%

 
Methane Emissions
 
 
 
Total Methane Emissions (tons)
98,772
98,877
N/A5
Total Methane Emissions (tons CO2-equivalent)
2,074,217
2,076,427
N/A5

PG&E does not trigger threshold reporting levels for those substances reported under the Toxic Release Inventory.

1 PG&E's Utility-retained generation comprised approximately 32 percent of our delivered electricity in 2007. For comparison to national average emission rates, see this page.

2 PG&E's Hunters Point Power Plant ceased operations on May 15, 2006.

3 These increases were due to temporary fuel oil combustion at PG&E's Humboldt Bay power plant during periods of natural gas curtailment.

4 Updated figures for 2005 and 2006 based on PG&E's independently verified emissions.

5 Data not available at the time of this report’s publication.

Hazardous and Non-Hazardous Waste1
 
2005
2006
2007
PCB Waste >50 ppm PCB
 
 
 
Total (kilograms)
738,680
832,377
730,357
Incineration
326,423
267,710
198,375
Landfill
75,157
334,857
63,863
Recycled
337,100
229,810
468,119
% Recycled
46%
27%
64%

 
PCB Waste <50 ppm PCB
 
 
 
Total (kilograms)
7,840,415
7,154,148
6,137,388
Incineration
510,218
354,555
66,613
Landfill
201,658
547,095
28,417
Recycled
7,128,539
6,252,498
6,042,358
% Recycled
91%
87%
98%

 
Low-Level Radioactive Waste
 
 
 
Diablo Canyon
 
 
 
Disposed (cubic feet)
3,881
1,159
1,066
Steel Recycled (pounds)
2,747
10,318
33,346
Lead Recycled (pounds)
7,015
1,716
4,826
Humboldt Bay Power Plant (cubic feet)
N/A2
N/A2
15,9943

 
RCRA Hazardous Waste (Generated)
 
 
 
Total (tons)
14,160
7,836
305
Recycled (tons)
221
23
0
% Recycled
2%
<1%
0%

 
Universal Waste (Generated)
 
 
 
Total (pounds)
345,239
233,429
253,928
Recycled (pounds)
345,239
233,429
253,928
% Recycled
100%
100%
100%

1 See this page for PG&E's total federal and California-regulated hazardous waste.

2 Low-level radioactive waste was generated, but stored on site.

3 Corrected figure from previously printed Corporate Responsibility Report.