Anyway ,we chatted about his latest company, which I can't find now. The idea was this: industrial facilities often return really noisy signals on the electrical supply lines, and the electrical company has to do a lot of work to clean it up (hey, I'm not an EE). Like, motors, etc, all severely distort the waveform. So his company made and I guess sold a product that you'd put at your electrical service panel that "cleaned up" the signal before it went back to the power company. In response, the company would give you cheaper power prices.
I was reminded of this when Larry Page met with Donald Trump early in the Trump administration and brought up one of his favorite plans- to rebuild the US electrical grid around DC distribution. He's truly made for another world.