The gas is run by the city so I believe your only option for gas will be PGW. For electric you'll want to use PECO. There will be people that will knock on your door, ask to see your PECO bill, and basically bullshit you trying to passively get you to switch electric providers. All you need to do to avoid being "scammed" is just don't answer your door or if you do tell them you're not interested.