Questions arose in different threads concerning damage an EV would suffer while charging from the grid. voltage drops or power spikes can prevent your EV from charging or even damage the car/the EVSE. Lloyd reported that a cogeneration plant in the vicinity polluted the grid, preventing his Roadster from charging reliably. W. Petefish reported that line spikes from the utility blew some fuses in his Roadster's PEM and the financial consequences were a hassle. lightning is known to take out electrical devices in even greater numbers. Three questions what is the best way to monitor your power supply and detect/report problems? what gear would you install to prevent your EV from harmful power conditions and at what cost? what kind of insurance would you chose to cover any damage to your EV/equipment and at what cost?