You can set a notification if the energy usage detected by your home energy meter is above or below a certain level. While these levels can be left alone (unless you're a qualified electrician), here's how you can set an alert if the home's voltage goes above or below normal.
First, hover your mouse over the top right of the home energy meter's device on your Dashboard. The wrench icon will appear -- click it and then select the "Device Options" menu.
As you can see, there are numerous variables for your home energy that can be set as triggers for your alerts. Again, most of these can be left alone, unless you're a qualified electrician or advanced user.
In the Device Options menu, you'll see that the first value is 120 volts -- this is the standard for US households, so it needn't be changed -- we're only using it for the sake of the notification example.
Now that we know that 120 volts is our "Desired Value" as shown in the top most field, you can set a notification for yourself if the voltage level in your home goes above or below 120 volts. Click on the "Notifications" menu and you'll see a new screen;
Fill in a name for your notification so that you can easily identify what's happened when you get a notification. Then use the drop-down menu to select which event will trigger a notification, as shown:
If the voltage being read by your home energy meter goes above the 120 volts that have been set as "Desired" you will receive an email or text notification, depending on the preferences that you've set.