Estimate your solar system size and savings
Use your electricity consumption, equipment quote and expected solar use to make a planning estimate. Change the example inputs to match your own property.
Your inputs
Your estimate
System sizing uses a 30-day month and a 78% performance factor. Savings use your selected share of solar electricity consumed on site, capped at your entered electricity use. This estimate includes no income for electricity exported to the grid.
Results are estimates, not a quotation or a guaranteed bill reduction. Roof shading, seasonal output, load timing, inverter sizing, outages, battery losses, maintenance, equipment replacement, financing and future tariff changes can affect results. Confirm the design with a qualified installer. The simple payback calculation excludes those additional costs. Read the disclaimer.