Category

Energy

Appliance running costs and solar payback estimates from your own usage.

How to use these calculators

Energy decisions reward careful inputs. Appliance costs depend on wattage, usage and the tariff you actually pay, while solar economics depend on generation, self-consumption and the upfront system cost. These calculators are deliberately transparent about the assumptions behind the estimate.

Before you make the decision

Use recent electricity bills where possible and test a conservative scenario. Tariffs, weather, equipment performance and household behaviour can all move the final result.