EV Solar Calculator for Helena, MT
Homeowners in Helena pay an average of $115/month for electricity through NorthWestern Energy. With 4.4 peak sun hours per day, solar can power both your home and EV charging.
4.4h/day
Peak Sun Hours
12.8¢/kWh
Electricity Rate
$115
Avg Monthly Bill
Full
Net Metering
Calculate Your EV Solar Needs in Helena
Adjust Your Details for Helena, MT
5,00030,000
0 kW15 kW
$
$2.00$7.00
15 MPG50 MPG
Your EV Solar Charging Estimate
Daily kWh for EV
8.7 kWh
Additional Solar Needed
2 kW
Additional Panels
5 panels
Additional Cost (before ITC)
$5,604
Cost After 30% ITC
$3,923
Annual Gas Savings
$1,096
Payback Period
3.6 years
Combined System
2 kW (5 panels)
* Estimates based on 4.4 peak sun hours/day in Helena, MT, 12.8¢/kWh electricity rate, 12,000 annual miles, Tesla Model 3 at 3.8 mi/kWh, 30% federal ITC, and $3.50/gal gas at 28 MPG comparison. Actual results may vary.
Local Solar Details for Helena
Utility & Permits
- Utility Company
- NorthWestern Energy
- Permit Cost
- $250
- Permit Timeline
- 2-3 weeks
- Net Metering
- full
EV Charging at a Glance
- Electricity Rate
- 12.8¢/kWh
- Avg Sun Hours
- 4.4h/day
- Avg Monthly Bill
- $115/mo
- System Cost
- $2.85/watt
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