Public EV Charging ROI Calculator (beta)

Take the guesswork out of your public EV charging investment with our free EV Charger ROI Calculator designed to model profitability, cashflow, and asset value over time.
This interactive tool helps site owners, developers, and investors understand the real return potential of installing fast-charging infrastructure.

The default values are based on a 120 kW dual output DC charger and can be adjusted accordingly. The calculator models realistic installation costs, operating expenses, and performance assumptions to give you a clear view of payback and long-term profitability.

Enexus supports customers at every stage of their charging project:

Supply of hardware solutions from leading European and Australian-certified manufacturers.
Referral to a trusted installation partner for site design and electrical works.
Access to a leasing partner offering highly competitive, finance-equivalent interest rates to simplify funding.

Use the calculator below to explore how factors such as daily utilisation, energy pricing, and financing terms influence the financial performance of your EV charging project and discover how Enexus can help you accelerate your path to net-zero transport.

Access the free Calculator

Signing up only takes 10 seconds

Your site

Change any value and the projection updates. All amounts AUD excluding GST.

Project cost

Charger hardware $ Supply price of the charging unit. Default: 120 kW dual-port DC charger. Installation $ Cabling, switchboard and civil works. Excludes a network supply upgrade. Grant funding % of cost

Finance

Upfront Loan Lease

Interest rate % p.a. Enexus's finance partner lends at rates close to bank finance. Term years Lease buyout % of financed Paid with the final instalment to take ownership.

Charger and grid connection

Site power kW Combined rated output of the chargers installed. Charging ports Grid import limit kW What the network bills demand on and the most energy the site can draw. Equal to site power unless you limit charger power or add a battery.

Utilisation

Sessions per port per day year 1

Public DC sites typically start between 2 and 5 sessions a port each day.

Energy per session kWh Early growth % a year While the site builds its customer base. Early period years Years at the early rate before growth slows. Later growth % a year Once established. Growth compounds monthly and stops at the site's ceiling. Maximum sessions per port a day Ceiling on what a port can serve once dwell, plug-in and queueing are counted. The site's power sets a second ceiling.

Tariffs

Price charged to drivers $ per kWh

Electricity cost $ per kWh

Retail energy rate on your business tariff, excluding demand charges.

Demand charge $ per kW per day

Network capacity charge on the grid import limit, billed every day whether or not anyone charges. 2026-27 published tariffs run from $0.23 (Energex, Ergon) to $0.60 (Ausgrid) a kW a day; Victorian 40-160 MWh sites sit near $0.45. kVA tariffs are close to kW for DC chargers.

Tariff escalation % a year Applied to the price, electricity cost and demand charge.

Operating costs

Maintenance $ a year Service visits, inspections, filters. Software $ per port a year Charge-management platform subscription. Transaction fees % of revenue Payment processing and any network revenue share. Insurance $ a year

Advanced and host arrangement

Projection period years Design life years Equipment value written down to zero over this period. If the projection runs longer, the hardware is bought again at today's price plus cost escalation; civils are reused. Conversion loss % Grid energy bought per kWh delivered. DC chargers run 92-97% efficient. Maximum load factor % Share of the day the site can realistically deliver at full power. A second ceiling on sessions. Demand billed % of import limit Set to 0 for tariffs with no demand component. Cost escalation % a year Applied to maintenance, software, insurance and licence. Commissioning ramp 50% of expected use in month 1, 75% in month 2. Carpark licence $ per port a year Rent paid to the site host, if you are not the landowner. Host profit share % Share of annual operating cash above the hurdle paid to the host. Profit-share hurdle % of project cost Operating cash you keep each year before any share is paid.

Cash position over time

Where each dollar of revenue goes

What moves the result

How busy does the site need to be?

Year by year

Keep this projection

Email yourself the year-by-year figures, or ask Enexus to look at the site with you.

I would like Enexus to contact me about this project Send me Enexus updates

Disclaimer. Default values and calculated results are a general guide only. Actual utilisation, operating costs and financial performance of public EV charging sites vary with location, site access, energy tariffs, driver behaviour and maintenance. Enexus makes no warranty or representation as to the accuracy or completeness of these estimates.