Part of the 270 kW rooftop solar system at Confeta, a Sydney packaging manufacturer

Calculators

What could your business save?

Two quick calculators: see what a better rate, solar or a battery could save you, and check whether your site can charge electric vehicles. Rough answers in under a minute.

Free, no sign-up to see results
Rough sizes, prices and payback
Exact numbers from your bill, free

Calculator

Solar and battery savings calculator

Enter your power bill and how you use power. You'll see three options: a better rate, solar, and solar with a battery, with rough sizes, prices and payback.

Average monthly power billRoughly what you pay each month, including GST

Usage rate, c/kWhThe usage or peak rate on your bill. Not sure? Leave 30c. kWh a month (optional)From your bill, if you have it. Otherwise we estimate it.

State When do you use most of your power?

Mostly daytimeDay and eveningAround the clockMostly evening and night

How many days a week is the business open?

4 or fewer5 days6 days7 days

Solar size, kW (optional)Leave blank for our suggestion. Bigger systems export more of their power for about 1c, so payback gets longer.

Assumptions (change them if you know better)

Solar feed-in, c/kWh Solar price, $ per kW after rebates Battery price, $ per kWh after rebates

We work through a typical year hour by hour: your usage pattern against solar that is stronger in summer, with cloudy days. On days you're closed we assume the site still runs fridges, servers and the like. We suggest the largest common size that exports no more than about a quarter of its solar. If you don't enter kWh, we assume about 85% of your bill is usage charges. Prices are typical installed prices after rebates where eligible, before any switchboard or network upgrades.

Your usage: about - kWh a year

Option 1

A better rate

about - a year

On average, we save our customers about 20% on their energy bills. No upfront cost, and if we don't find a saving, there's no fee.

Option 2

Solar, - kW

- a year saved

Estimated price: - after rebates
Exported: about - of the solar, at 1c/kWh
Payback: about -

Option 3

Solar and a battery

- a year saved

System: - kW solar + - kWh battery
Estimated price: - after rebates
Payback: about -

Estimates only, not a quote. Your real numbers depend on your tariff, roof, switchboard and contract. A better rate and solar can be combined. Send a bill and we'll work them out properly, free.

Get my free savings check

We'll check these numbers against your real bill and usage. Your results come with your request.

Calculator

EV charging site check

Can your site charge your vehicles? Your power supply limits how many chargers you can run. This gives you a first answer in a few seconds.

A first answer only. We confirm it with your interval data and a switchboard check before anything is ordered.

Get my free savings check

Comparing electric vans or trucks, range or running costs? Try the fleet calculators on EVdex.