On Apr 13, 8:59*pm, Home Guy wrote:
...
The home owner with the PV system will get paid 80 cents / kwh for the
40-odd amps he's pushing out into the grid, but that energy will be
wasted as it's converted disproportionately into heat - not useful work
- by the linear loads on the local grid.

Plug a Kill-A-Watt (etc) voltmeter into an outlet and then switch on a
load, like a heater or iron. See what the voltage drop is for that
current. You can measure the drop at the breaker box by metering an
outlet on a different breaker on the same side of the line. This will
show you approximately how much your grid voltage changes with
current, from or to the grid.

jsw