Exhibit 12.01
PUBLIC SERVICE COMPANY OF COLORADO
STATEMENT OF COMPUTATION OF
RATIO OF EARNINGS TO FIXED CHARGES
(Thousands of Dollars)
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| Year Ended December 31, |
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| 2006 |
| 2005 |
| 2004 |
| 2003 |
| 2002 |
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Earnings as defined: |
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Pretax income from continuing operations |
| $ | 346,938 |
| $ | 302,104 |
| $ | 307,869 |
| $ | 329,347 |
| $ | 404,729 |
|
Add: Fixed Charges |
| 147,061 |
| 155,731 |
| 168,115 |
| 180,700 |
| 162,982 |
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Earnings as defined |
| $ | 493,999 |
| $ | 457,835 |
| $ | 475,984 |
| $ | 510,047 |
| $ | 567,711 |
|
Fixed charges: |
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Interest charges within rental expense |
| $ | 147,061 |
| $ | 155,731 |
| $ | 168,115 |
| $ | 173,328 |
| $ | 148,238 |
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Preference security dividend requirements of consolidated subsidiaries |
| — |
| — |
| — |
| 7,372 |
| 14,744 |
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Total fixed charges |
| $ | 147,061 |
| $ | 155,731 |
| $ | 168,115 |
| $ | 180,700 |
| $ | 162,982 |
|
Ratio of earnings to fixed charges |
| 3.4 |
| 2.9 |
| 2.8 |
| 2.8 |
| 3.5 |
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