Home vs Public EV Charging: Which Actually Saves More?
Home wins by 2.7x in the US. But 'I can't install at home' is reality for many. Here is how to figure out where you actually land.
A 75 kWh battery 20-80 percent fill costs about $8 at home or $21.50 at a US DC fast charger — a 2.7x spread. For most owners the answer is obvious: charge at home. But "I can't install at home" is real for a third of urban EV buyers.
The home charging premise
Level 2 home installation costs $1,500-$3,500 (electrician, permit, 50A circuit). Federal tax credits cover 30 percent up to $1,000. At 12,000 miles per year, the hardware pays back in 12-18 months versus DC fast charging.
Solar makes the math even better. A 10 kW rooftop array at $20,000 net of incentives covers all your EV charging in sunny climates.
When public-only is still worth it
If you have no home option, run the numbers against gasoline. In the US:
- DC fast at $0.43/kWh costs about $0.12/mile
- Gas at $3.40/gal in 30 mpg costs $0.113/mile
Essentially break-even. Add the convenience tax of finding stations and pure-public EV ownership in the US is a wash. In Norway and Korea, where public DC stays cheaper relative to fuel taxes, the EV still wins by 30-40 percent.
Workplace charging is the underdog
Free or subsidized employer charging effectively resets you to home economics. Three to four days per week of workplace L2 plus weekend home top-ups covers most patterns.
The apartment problem
- Petition the HOA or landlord. Tax credits and ROI for the building are real.
- Use 120V (Level 1) where possible. 4 miles per hour adds up — a 30-mile commute recovers in under 8 hours overnight.
- Schedule DC fast for off-peak hours. Some operators cut 20-30 percent between 11 PM and 5 AM.
- Consider plug-in hybrid if pure EV math doesn't work.
The verdict
Home charging is the single biggest variable in EV economics — bigger than which model you buy, bigger than your utility's rate. Solve for home charging first, public second. With Level 2 your charging is roughly half what gas was. Without it, savings are 20-50 percent depending on country. Both still beat gas in 2026.