I am in Gil’s camp ... and I am not Hungary. I would never operate anything continuously in excess of 130 volts. Any tolerance is there for short term overages not continuous use. In addition, I would be surprised if your utility meter was based on current use alone. They are getting pretty sophisticated and are looking at energy used regardless of voltage.

In these AC systems, the main reason for using a higher voltage on a constant power device is to reduce the amperage so you can use smaller wires and lower construction cost. That said, the power requirement for anything in the bus is small enough that there is no savings by going to 240 volt ... thus you see 120 volt for everything and all things are readily available.