With a solar generation system, your home uses electricity generated from solar panels to power appliances in your home. The system then exports any leftover electricity to the grid.
How you take readings from your installation depends on whether you get paid through:
- the Feed-in Tariff
- Export Payments
How your solar generation installation works
The following diagram shows the different parts of a home's solar generation installation.
The solar panels (1) send direct current, or DC, through a DC isolator (2) to the DC/AC inverter (3).
The DC/AC inverter converts the direct current into alternating current, or AC.
Electricity is then passed through an AC isolator (4) to the generation meter (5), which records the total kilowatt hours, or kWh, of electricity generated by the solar panels.
The electricity then goes to the consumer unit (6), which distributes power from the solar generation installation to the home.
Appliances in the home (7) use the electricity as needed. Any extra capacity is sent through a normal electricity meter (8) and exported to the grid (9).
Taking readings for the Feed-in Tariff
Take your quarterly reading for the Feed-in Tariff from the generation meter (5). It records how much energy your solar installation is generating, and will give you a reading in kWh.
Find out more about:
- Feed-in Tariff quarterly readings
- your generation meter
Taking readings for Export Payments
Take your quarterly reading for your Export Payments from a smart electricity meter (8) or export meter that records your exported energy every half hour.
You can't take export meter readings from the generation meter (5), because it doesn't measure how much energy you're exporting to the grid.
Find out more about taking an export reading from a smart meter.