Calculators

Perform the calculation you need

Your location & roof

Where is the property, and which way does the roof face?

State

Region

Postcode optional

Roof orientation0° N

Drag the dial, use the arrow keys, or pick a direction. 0° is north.

Roof angle20°

Most Sydney tiled roofs are 20–25°. Flat and low-pitch roofs are usually tilted on frames.

Power supply

Single phase usually limits the inverter to 5–10kW and exports to 5kW.

Your electricity tariff

Who supplies your power, and on what tariff?

We fill in current 2026–27 NSW rates. Have your bill handy? Tick the box below and enter only the prices printed on it.

State

Customer type

Network on your bill as “Distributor”

Retailer

Tariff type

Enter my own rates from my bill — leave blank anything your bill doesn’t show; we keep using our figures for it.

Usage rate c/kWh

Anytime / general usage

Peak c/kWh

Usually 3pm–9pm

Shoulder c/kWh

Daytime, where your tariff has one

Off-peak c/kWh

Overnight

Controlled load c/kWh

Separate hot-water circuit

Daily supply charge c/day

Also shown as $/day

Solar feed-in c/kWh

What you are paid to export

Demand charge c/kW/day

Business demand tariffs

Website optional — where did you get these rates?

Only used to check and update our tariff records. It is never shown on the website.

Prices you type are saved anonymously — no name, email, address or IP — and help us give better estimates to other NSW households on the same retailer and network.

Your system

Solar system size6.6 kW

Household usage per year6,000 kWh

A quarterly bill around $650 is roughly 6,000–7,000 kWh a year.

Share of generation used at home35%

Without a battery most households land between 25% and 40%.

Options

Add a 13.5kWh batteryLifts self-consumption

Daytime EV chargingSoaks up exports

Plans compared

Indicative September 2026 NSW retail offers. Retailers change these often — always check the current Basic Plan Information Document before switching.

Best annual outcome

$0/ year net bill

Retail plan shape	Import	Feed-in	Net cost / yr

Annual generation0 kWh

Used at home (worth the import rate)0 kWh

Exported (worth the feed-in rate)0 kWh

Still bought from the grid0 kWh

Key point

Size a system that exports less →Call 0421 458 217

Step 2 · Free full quote

Get a proper quote from our team

Send your estimate and a few details — we prepare a real, itemised quote for your property. Free, no obligation.

Estimates only, for planning — your actual result depends on your tariff, roof, usage and the products chosen. Rebate and tariff figures are current as of September 2026: the federal Cheaper Home Batteries Program (tiered per-kWh via STCs) and the STC discount on new solar step down on a set schedule, the NSW PDRS household battery install incentive is suspended, and we confirm the exact value at quote. Verify current values with the Clean Energy Regulator and NSW Government.