| Business | Phone |
| El Paso Natural Gas Co 650 California St, San Francisco 94108 | (415) 765-6400 |
| Pacific Gas & Electric Co 245 Market St # 438, San Francisco 94105 | (415) 973-0548 |
| Sempra Energy Utilities 601 Van Ness Ave # 2060, San Francisco 94102 | (415) 202-9986 |