Overview

In some cases, it can be useful to graph the net (bi-directional) flow of power to and from the utility, instead of the total power consumed and produced. This process adds a new view to display this information. The instructions below only apply to backfed PV systems.

Prerequisites

• Valid login credentials are needed to apply these changes.

Instructions

Step 1: Navigate to Setup → Other settings, then Installation to the left. 

Verify the "Usage" register at the bottom of the page contains "Solar+". This will not work with devices which are not using "Solar+" in the "Usage" register.

Step 2: Set the "Grid" register to record both positive and net values. When done, it should look like this:

Step 3: Add two new virtual registers: "Net.Usage" and "Net.Generation". Note the spelling and capitalization must match exactly.

Step 4: Set "Net.Usage" to equal "Grid+" and "Net.Generation" to equal "Grid-". When done, they should look like this:

Step 5: Save and Reboot, Once the eGauge comes back online, navigate to Tools → Split Registers.

Step 6: Select "Grid" and click Start Splitting. This process can take 10-15 minutes - do not reboot the eGauge during this time. Once the register split process has been completed, data can be viewed on the main graph page by selecting the "Net" view. The images below show a comparison between the default "total used/total generated" graph and the new "net used/net sold" graph.

Above: Default view: Overlapping Usage and Generations Lines

Below: Net view: Power is either moving to or from the utility

Additional Resources

• Getting Started: Configuration