Every circuit's cost, calculated by where its energy came from.

Solar usually isn't allocated per circuit

Unless your solar is wired to its own sub-circuit, your panels feed the whole house at once — so the switchboard allocates every kilowatt-hour to grid usage at your plan's time-of-use rates, as if it had all been imported.

Solar and battery, allocated in proportion

For every interval of the day, Corrente works out how much of the home's total load your own generation covered, then gives each circuit that same share, weighted by what the circuit actually drew. A circuit pulling a third of the load at midday gets a third of the solar.

Every source, not just the tariff

Each interval is split by source, not just by time of day. The chart shows it directly: grid when you're importing, solar when the roof is carrying the load, battery when it's coming out of storage.

The amortised cost of solar and battery

Corrente lets you enter your own amortised cost per kWh for solar and battery, calculated however you like — for example, install cost (plus a replacement inverter, since they typically only last around 10 years) divided by expected generation over a 20-year lifespan. That gives an honest running cost instead of treating self-generated energy as free.

Estimated bill cost and savings, per circuit

Bill Cost is what your retailer will actually charge for that circuit — only the kWh that came from the grid, at your plan's own peak, shoulder, and off-peak rates. Savings is what you avoided paying by running on your own generation instead. Together they tell you what a circuit costs and what your system is doing for it.

A day on one circuit

The screen alongside is a single circuit — an EV charger — on Wednesday 5 August. It charges overnight on off-peak grid power, then tops up again around midday while solar is generating.

25 kWh of off-peak grid at $4.96, 8.6 kWh of solar amortised at $0.77, and 351 Wh of battery at $0.14 — a bill cost of $4.96 and $3.58 saved.

Hot water, heat pump, oven, lighting

The same allocation runs across every circuit you have, over any period — day, week, month, or year. It's what makes it possible to say which appliance is genuinely expensive to run in your house, and which one your solar is already paying for.