A 'PEP' Talk on House Doctoring by Alex Wilson Princeton Energy Partners might seem as if it's a company whose time has come...and gone. With low oil prices, everyone talks about how no one is interested in saving energy anymore. But that's not the case. Princeton Energy Partners (PEP), a New Jersey-based "house doctor" company, is doing a booming business. It currently has eight franchises and plans to expand to 25 within a year. More significant, company president David Brown says that his firm has not been hurt by the lower oil prices. Even I, the eternal optimist when it comes to energy awareness, was surprised to find such an upbeat company attitude and thought it appropriate to tell the