How much has my Solar System saved?A question that comes up quite often several months after completing a solar PV installation is “How much have I saved on my Solar Power System to date?”. Many get confused with what they have saved on their usage with what they have received as a Feed-In Tariff. Assuming that you have upgraded your Western Power meter as part of the application process the process is relatively simple. This means that the meter would have been set to, or within a few days from installation, zero. The benefit to this is that your Solar inverter also starts at zero and will give us a good starting point to how much you have saved.
How to read my Western Power MeterFor starters, you will need to look at your Western Power meter. Wester Power has several meters available however the two most common ones are listed below, if yours does not appear below you should be able to google it or have a quick search on the Western Power website.
Single Phase EM1000 Meter
Single Phase Meter EM1000 Meter for Meter Codes 0258 & 0200
Three Phase EM3330 Meter
Three Phase Meter EM3330 Meter For Meter Codes 0350Now that we have determined which meter you have we need to scroll through the settings to find how many kWh (units) we have imported from the grid and how many kWh (units) we have exported (sold) to the network.
How do i read my inverter?Given there are many different types of inverters available on the market we will try to generalise this section. When looking at your inverter, you should have a home screen that appears. Each inverter is different and to scroll through the data you may either have to knock the inverter with the back of your knuckle, or it may have a button or scrolling arrows. We need to scroll through the display and locate a total kWh or MWh. This is usually referenced to as the “E- Total”. If your inverter is newly installed, it will typically read as kWh, but after time it will change to MWh.
Since the Western Power meter is reading in kWh (units) we will need to ensure that we are using the same format. If the inverter is reading in MWh, you will simply need to convert it to kWh
Formula: 1.75 MWh = 1,750 kWh (simply multiply it by 1000)
How do i calculate how much i have saved with Solar?
Working ExampleEM1000 Imported kWh (units) is the Total KWh Consumed or channel 7 Exported kWh (units) is the Total KWh Generated or channel 47