Zero Motoring Bill
Electric Vehicle plus how many solar panels do I need?

• What is your current commuting distance?
• How much energy will be used by your electric vehicle in a year?
• How many solar panels are needed to eliminate your motoring electricity bill in your location?

Extra Savings: Generate solar on general electricity tariff. Charge vehicle on off peak tariff overnight. You keep the difference.

You may be suprised how few solar panels can make your electric motoring travelling cost zero and carbon neutral.

Electric Vehicle Commuting distance calculator

Parameter	Value
Daily commute distance in km
Days per week commuting in km
Extra km per week
Calculate yearly kilometres
Power for electric vehicle in year kWh
Power for electric motorbike in year kWh

Parameter	Value
Daily commute distance in miles
Days per week commuting in miles
Extra miles per week
Calculate yearly miles
Power for electric vehicle in year kWh
Power for electric motorbike in year kWh

The distance per kWh is based on Nissan Leaf EPA testing 4.8 km or 3 miles. This is used to calculate year vehicle electric energy needs.
The distance per kWh is based on Zero S motorbike EPA testing 15.9 km or 9.8 miles.This is used to calculate year motorcycle electric energy needs.

Solar Panel Power Calculator

Parameter	Value
Yearly kWh used	kWh
General tariff kWh - off peak tariff kWh cost (optional)	currency
Your local average daily Solar Radiation World Map Solar Radiation (kWh/m2/day)	kWh/m2/day
Press this button after adjusting values above
90% efficiency in the grid inverter or battery charger assumed. Solar Panel Rating using 1 kW / metre square Standard Test Conditions (STC) at 25 oC assumed.
Amorphous Silicon Solar Panels	square metres
or Polycrystalline Silicon Solar Panels	square metres
or Mono crystalline Silicon Solar Panels	square metres
Total solar panel power target STC	watts
Potential 30 year electricity tariffs cost savings	currency

Solar Panel Sizes

Home solar panels can come in various sizes and power ratings.
See a sample of solar panels below.

Amorphous Silicon Solar Panels	Polycrystalline Silicon Solar Panels	Mono crystalline Silicon Solar Panels
124 watts	190 watts	190 watts
2459 mm long	1571 mm long	1482 mm long
793 mm wide	951 mm wide	992 mm wide
1.95 square metres	1.49 square metres	1.47 square metres

For more solar panel specifications see Solar Panel Calculator

Work out total solar panels area calculator
No. of solar panels
Long mm
Width mm
square metres

Solar Power System Considerations

Grid connected solar power:

Solar panels + grid inverter + new power meter + installation - government rebates - renewable energy credits or

Remote connected solar power:

Solar panels + regulator + batteries + inverter + installation - government rebates - renewable energy credits

Next step to a free motoring energy from home

• Work out the installed cost of your home solar panels.How much does solar power cost?
• Consider the value of free energy for the next 30 years.
• Work out the return on investment using Solar Power Calculator
• Work out how many solar panel are needed to Zero your home electricity bill