Fuel savings calculator

EV fuel savings calculator

Did you know that the cost of running an electric car can be much lower than fuelling a petrol or diesel vehicle?

We have partnered with the FASTER Project Northern Ireland who have developed an EV Fuel Savings Calculator.

Helping you see how much you could potentially save by making the switch to electric.

Power your car and home with Power NI

Discover our range of electric car and home energy tariff solutions to suit your lifestyle. We offer flexible payment options for pay-as-you-go and direct debit customers as well as tariff options to suit your charging needs. Benefit from cheaper night-time electricity or choose our standard plan for flexible, anytime charging.

Best Deal

EV Nightshift with Monthly Direct Debit

Get a quote

Save up to £330 a year!

Take advantage of reduced night time rates for overnight charging.

Unit rate prices

	Effective unit excl. VAT	Effective unit incl. VAT
Night rate	16.34p ^[*]	17.16p ^[*]
Day rate	34.12p ^[*]	35.89p ^[*]
Standing charge	13.01p	13.66p

*Unit rates are effective until 30 September 2025 - click here to see unit rates from 1 October 2025.

Reduce your carbon footprint

Choosing this plan cuts the use of fossil fuels as we source your equivalent consumption from 100% renewable generators².

Charge at home

Looking for a discreet charger for your home? Check out our EV charging products.

Go contract free

No contracts, ties in or exit fees just freedom of choice and flexibility.

Get a quote

EV Anytime with Monthly Direct Debit

Get a quote

Save up to £60 a year!

Suited to drivers who prefer the ability to charge at home at any time of the day.

Unit rate prices

	Effective unit excl. VAT	Effective unit incl. VAT
Day rate	27.23p ^[*]	28.59p ^[*]
Standing charge	12.68p	13.31p

*Unit rates are effective until 30 September 2025 - click here to see unit rates from 1 October 2025.

Reduce your carbon footprint

Choosing this plan cuts the use of fossil fuels as we source your equivalent consumption from 100% renewable generators².

Charge at home

Looking for a discreet charger for your home? Check out our EV charging products.

Go contract free

No contracts, ties in or exit fees just freedom of choice and flexibility.

Get a quote

Best Deal

EV Nightshift with Monthly Direct Debit

Save up to £330 a year!

Take advantage of reduced night time rates for overnight charging.

Get a quote

EV Anytime with Monthly Direct Debit

Save up to £60 a year!

Suited to drivers who prefer the ability to charge at home at any time of the day.

Get a quote

EV Nightshift with Monthly Direct Debit

Terms & Conditions

Online billing

[1] Online billing monthly Direct Debit customers get 5.3% discount up to £15 per quarter, equivalent to 6% off the standard tariff and capped at £60 per year. The maximum discount would be obtained by a customer spending £250 each quarter on electricity.

To view Power NI standard rates please visit our unit rates page.

Green Energy

[2] Power NI supports local micro and large-scale generators. Our renewable electricity is achieved through PPAs (Power Purchase Agreements) with wind, photo-voltaic (PV) and hydroelectric generators across Northern Ireland. Power NI's renewable electricity is backed by Renewable Energy Guarantees of Origin (REGO) certificates issued by the UK energy regulator, Ofgem.

Annual savings

Discount	Savings
6%	up to £60

*Saving compared to our standard rate. Saving based on annual consumption of 5,700 kWh made up of home energy consumption of 3,200 kWh (75% day and 25% night) and EV consumption of 2,500 kWh per year, charged at the night rate.

Key tariff features

No fixed term contracts
No exit fees
Paperless billing
Monitor your usage
Access to Power NI Perks

EV Anytime with Monthly Direct Debit

Terms & Conditions

Online billing

Green Energy

Annual savings

Discount	Savings
6%	up to £60

*Saving compared to our standard rate. Saving based on annual consumption of 5,700 kWh made up of home energy consumption of 3,200 kWh and EV consumption of 2,500 kWh per year.

Key tariff features

No fixed term contracts
No exit fees
Paperless billing
Monitor your usage
Access to Power NI Perks

Learn more about electric cars

Cost of running & charging an electric car

Top benefits of electric cars

Discover how electric cars works

Electric car buyers guides