Calculate Actual Home Energy Usage with PV Enphase Energy
Background Information
Unless you have a 3rd party energy monitoring system that can measure your home energy consumption and solar PV production, it is difficult to see how much electricity your home is actually using when you have a solar PV system. This is because your monthly electric bill only shows how much energy was delivered (DEL) to you and how much excess energy may have been received (REC) back by the utility. This is due to the fact that the utility meter can only measure power going in and out in kilowatt hours (kWh). But what about the solar PV energy that was used directly in the home, but not measured by the utility meter?
To calculate the actual energy usage of your home for a given month, we would also need to include a column that has the total solar PV production for the month. Remember, the utility electric meter can only measure the amount of excess PV power that goes back to the electric grid, not the total amount of PV power generated for the month.
