Straight answers to the questions you keep putting off.
Starting with energy: worked out from your own electricity bill, for Western Australia. Free.
Should we get a battery?And what size, on which plan, and how long it takes to pay for itself.Coming soon
Next: should we switch plans, get an electric car, or swap the gas hot water for a heat pump?
Should We started at the Greenspark Innovation Hackathon in Perth (Green Tech Hub, October 2026), answering Zenith Energy's challenge: a tool a home or business could use to find out what a battery would earn, and from where. It's being built in the open by App Dandy, a Perth software company, and it stays free.