"Unlikely. It is more likely a transformer would explode before you would
see any home damage."

I disagree with this statement for the following reason. The flavor of BPL
that allows the outlets in your home to be the internet connection, through
the BPL modem, requires that the step down transformer from the 4 KV to
13.8KV lines be BYPASSED, primary to secondary, with capacitors to let the
HF BPL signal around it. Guess what this will do. This implementation of
BPL will let HF noise along with the BPL signal on the lines into your home,
including all that lightening energy. This may actually help protect the
transformer while the energy is directed into your home! Not all BPL
equipment companies are going this way though.

Chuck...K1KW