| Business | Phone |
| Celeren 1500 John F Kennedy Blvd # 200, Philadelphia 19102 | (215) 988-9923 |
| Citizens Coalition For Energy 100 N 17th St, Philadelphia 19103 | (215) 563-3989 |
| Energy Marketing Svc 7901 Bustleton Ave, Philadelphia 19152 | (215) 332-4820 |
| Gamesa Energy Usa 1 S Broad St, Philadelphia 19109 | (215) 665-9810 |
| Kelley Energy 825 E Washington Ln, Philadelphia 19138 | (215) 438-7803 |
| Nps Energy Svc Inc 1818 Market St, Philadelphia 19103 | (215) 299-8330 |
| Phila Thermal Energy Corp 908 Sansom St, Philadelphia 19107 | (215) 574-1325 |
| Princeton Energy Systems 40 W Evergreen Ave, Philadelphia 19118 | (215) 247-5810 |
| Trigen Energy Co 200 W Washington Sq, Philadelphia 19106 | (215) 627-0570 |
| Trigen-Philadelphia Energy 2600 Christian St, Philadelphia 19146 | (215) 875-6900 |