| EXHIBIT 12.2
| SAN DIEGO GAS & ELECTRIC COMPANY
| COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES
| AND PREFERRED STOCK DIVIDENDS
| (Dollars in millions)
|  | Three months ended |  |  |  |  |  |  |  |  |  |  |
|  |  | Year ended December 31, |
|  | March 31, 2018 |  | 2017 |  | 2016 |  | 2015 |  | 2014 |  | 2013 |
Earnings: |  |  |  |  |  |  |  |  |  |  |  |
Pretax income from continuing operations before income or loss |  |  |  |  |  |  |  |  |  |  |  |
from equity investees, noncontrolling interests and preferred dividends | $ | 225 |  |  | $ | 576 |  |  | $ | 845 |  |  | $ | 890 |  |  | $ | 797 |  |  | $ | 626 |  |
Add: |  |  |  |  |  |  |  |  |  |  |  |
Combined fixed charges and preference security dividends for purpose of |  |  |  |  |  |  |  |  |  |  |  |
ratio (from below) | 84 |  |  | 279 |  |  | 240 |  |  | 242 |  |  | 239 |  |  | 237 |  |
Amortization of capitalized interest(1) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Less: |  |  |  |  |  |  |  |  |  |  |  |
Interest capitalized | — |  |  | 1 |  |  | — |  |  | — |  |  | 1 |  |  | — |  |
Preference security dividend requirements(2) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 5 |  |
Noncontrolling interest in pretax income of subsidiaries that have not incurred |  |  |  |  |  |  |  |  |  |  |  |
fixed charges | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Total earnings for purpose of ratio | $ | 309 |  |  | $ | 854 |  |  | $ | 1,085 |  |  | $ | 1,132 |  |  | $ | 1,035 |  |  | $ | 858 |  |
Fixed charges and preferred stock dividends: |  |  |  |  |  |  |  |  |  |  |  |
Interest expensed and capitalized and amortization of premiums, discounts |  |  |  |  |  |  |  |  |  |  |  |
and capitalized expenses related to indebtedness(1) | $ | 84 |  |  | $ | 278 |  |  | $ | 239 |  |  | $ | 241 |  |  | $ | 238 |  |  | $ | 231 |  |
Estimate of interest within rental expense | — |  |  | 1 |  |  | 1 |  |  | 1 |  |  | 1 |  |  | 1 |  |
Total fixed charges | 84 |  |  | 279 |  |  | 240 |  |  | 242 |  |  | 239 |  |  | 232 |  |
Preference security dividend requirements(2) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 5 |  |
Combined fixed charges and preferred stock dividends for purpose of ratio | $ | 84 |  |  | $ | 279 |  |  | $ | 240 |  |  | $ | 242 |  |  | $ | 239 |  |  | $ | 237 |  |
Ratio of earnings to fixed charges | 3.68 |  |  | 3.06 |  |  | 4.52 |  |  | 4.68 |  |  | 4.33 |  |  | 3.70 |  |
Ratio of earnings to combined fixed charges and preference security dividends | 3.68 |  |  | 3.06 |  |  | 4.52 |  |  | 4.68 |  |  | 4.33 |  |  | 3.62 |  |
(1 | ) | In computing this ratio, our public utilities that follow FASB ASC Topic 980, Regulated Operations, do not add amortization of capitalized interest in determining Earnings or reduce Fixed Charges by allowance for funds used during construction.
(2 | ) | In computing this ratio, “Preference security dividend requirements” represents the pretax earnings necessary to pay such dividends, computed at the effective tax rates for the applicable periods.