Solar savings scenario

MEASURE FIRST

How to prepare your inputs

Read electrical input power or annual energy use from the appliance label. Enter tariffs from your bill and forecasts from your installer.

How this calculation works

Annual benefit = generation × self-use share × avoided tariff + exports × feed-in tariff − additional annual costs. Simple payback = upfront cost ÷ positive annual benefit.

Assumptions & exclusions

A scenario, not a postcode forecast. Get generation and simultaneous self-use estimates from an installer. Excludes batteries, rebates calculation, export limits, degradation, finance and future tariff changes. Avoid counting savings from energy you cannot use or export.

Your next step

Compare like-for-like energy assumptions and use a licensed installer for electrical or solar system decisions.

Further reading

• Australian Government energy guidance

These resources provide background information. Confirm current product specifications and project requirements with your supplier or trade professional.

What if my shape or product is different?

Use dimensions and product data that match the stated method. For complex work, calculate separate sections or obtain a project-specific take-off. Do not apply simple geometry to structural or compliance decisions.

Why are quantities rounded up?

Whole bags, packs, sheets or cartridges round up to purchasable units. Decimal area or volume results are planning figures; confirm order increments with the supplier.

Are my entries saved?

No. Entries remain in the current browser page and clear on reload. Printing can save your results and inputs as a PDF on your device.