EV Home Charging: I Did the Math—and Saved Hundreds of Dollars
High-voltage outlets, smart chargers, money-saving utility programs: what to know about charging EVs at home
High-voltage outlets, smart chargers, money-saving utility programs: what to know about charging EVs at home
Things I miss about my local gas station:
…
That’s it. That’s the list. OK, fine, I did enjoy the communal squeegees.
This week marks six months since the grand opening of my home electric-vehicle charging station. Congrats to the whole team! (Me and my electrician.) Located between my garage door and recycling bin, it’s hard to beat for the convenience. And also the price.
If you’ve followed my ad-EV-ntures, you’re aware of my feelings about the hell that is public EV charging , at least before Tesla started sharing its Superchargers with its rivals. Truth is, I rarely go to those public spots. The vast majority of EV owners—83%—regularly charge at home, according to data-analytics company J.D. Power.

I already discovered many EV virtues , but I didn’t quite grasp the cost savings until I tallied up half a year of home-charging data. In that time, I spent roughly $125 on electricity to drive just under 2,500 miles. In my old car, that would have cost me more than twice as much—assuming gas held steady at around $3.25 a gallon . And I was charging through the winter, when electricity doesn’t stretch as far in an EV.
Rebates and programs from my state and utility company sweeten the deal. So I will be able to take advantage of discounted electricity, and offset the cost of my charger. The same may be available to you.
But first, there are technical things to figure out. A 240-volt plug? Kilowatt-hours? Peak and off-peak charging? While other people are in their garages founding world-altering tech companies or hit rock bands, I’m in there finding answers to your home-charging questions.
Sure, you can plug your car into a regular 120-volt wall outlet. (Some cars come with a cable.) And sure, you can also simultaneously watch all of Netflix while it charges. It would take more than two days to fill my Ford Mustang Mach-E’s 290-mile battery via standard plug, known as Level 1 charging.
That’s why you want Level 2, which can charge you up overnight. It requires two components:
• A 240-volt electric outlet. Good news: You might already have one of these higher-powered outlets in your house. Some laundry dryers and other appliances require them. Bad news: It might not be in your garage—assuming you even have a garage. I realise not everybody does.
Since my suburban New Jersey home has an attached garage, the install process wasn’t horrible—or at least that’s what my electrician said. He ran a wire from the breaker panel in the basement to the garage and installed a new box with a NEMA 14-50 outlet. People with older homes or detached garages might face trickier wiring issues—more of a “Finding NEMA” adventure. (I apologise to everyone for that joke.)
My installation cost about $1,000 but the pricing can vary widely.
• A smart charger. Choosing a wall charger for your car is not like choosing one for your phone. These mini computers help you control when to start and stop charging, calculate pricing and more.
“This is not something where you just go to Amazon and sort for lowest to highest price,” said Tom Moloughney, the biggest EV-charging nerd I know. On his website and “State of Charge” YouTube channel , Moloughney has reviewed over 100 home chargers. In addition to technical measurements, he does things like freezing the cords, to see if they can withstand wintry conditions.
“Imagine you are fighting with this frozen garden hose every time you want to charge,” he said.
One of his top picks, the ChargePoint Home Flex , was the same one my dad had bought. So I shelled out about $550 for it.
Just remember, if you want to make use of a charger’s advanced features—remote controls, charging updates, etc.—you’ll also need strong Wi-Fi in your garage.
I hear all you money-minded WSJ readers: That’s at least $1,600 after getting the car. How the heck is this saving money? I assumed I’d recoup the charging-equipment investment over time, but then I found ways to get cash back even sooner.
My utility provider, PSE&G, says it will cover up to $1,500 on eligible home-charger installation costs . I just need to submit some paperwork for the rebate. In addition, New Jersey offers a $250 rebate on eligible charger purchases. (Phew! My ChargePoint is on the list.) If all is approved, I’d get back around $1,250. Fingers crossed!
I didn’t know about these programs until I started reporting on this. Nearly half of home-charging EV owners say they, too, are unaware of the programs offered by their electric utility, according to a 2024 study released by J.D. Power . So yes, it’s good to check with your provider. Kelley Blue Book also offers a handy state-by-state breakdown.
Now I just plug in, right? Kinda. Even if you have a Level 2 charger, factors affect how many hours a fill-up will take, from the amperage in the wall to the current charge of your battery. Take Lionel Richie’s advice and plan on charging all night long .
It can also save you money to charge during off-peak hours.
Electricity costs are measured in kilowatt-hours. On my basic residential plan, PSE&G charges 18 cents per kWh—just 2 cents above the 2023 national average . My Mustang Mach-E’s 290-mile extended-range battery holds 91 kilowatt-hours.
Translation: A “full tank” costs $16. For most gas-powered cars, that wouldn’t cover half a tank.
And If I’m approved for PSE&G’s residential smart-charging plan, my off-peak charging (10 p.m. to 6 a.m. and weekends) will be discounted by up to 10.5 cents/kWh that I’ll get as a credit the following month. I can set specific charging times in the ChargePoint app.
Electricity prices fluctuate state to state but every expert I spoke to said no matter where in the country you live, home charging should cost less than half what gas would for the same mileage. (See chart above for a cost comparison of electric versus gas.) And as I’ve previously explained , fast charging at public stations will cost much more.
One big question: Am I actually doing anything for the environment if I’m just taxing the grid? Eventually, I’d like to offset the grid dependence—and cost—by powering my fancy little station with solar panels. Then, I’ll just be missing the squeegee.
Travellers are swapping traditional sightseeing for immersive experiences, with Africa emerging as a must-visit destination.
A survey of people with at least $1 million in investable assets found women in their 30s and 40s look nothing like older generations in terms of assets and priorities
New research suggests that bonuses make employees feel more like a mere cog in a wheel.
When it comes to rewarding workers financially, cash isn’t always king.
Companies frequently give employees monetary bonuses, but a new study suggests that paid vacation time is a perk employers should also consider.
The study’s authors say that while they didn’t explicitly look into whether employees prefer time off, the study found that receiving extra vacation time rather than bonus money makes workers feel less like a mere cog in a wheel and more like people who are recognised and valued as individuals with a life beyond work.
It makes them feel more human, in the researchers’ terms.
And that feeling benefits employers as well as employees, says Sanford DeVoe, a professor at the Anderson School of Management at the University of California, Los Angeles, and one of the study’s authors.
Feeling more human is strongly correlated with higher job satisfaction, greater engagement with work, better relationships with colleagues and less inclination to leave a job, he says.
In one experiment, the researchers asked about 1,500 participants to recall times when they received a monetary bonus or paid time off—all had received both—and how that made them feel.
Participants responded to the question on a 7-point scale, from feeling more like a robot on the low end of the scale to feeling more human on the high end. Monetary bonuses were given an average score of 5.04, compared with 5.4 for paid vacation time.
“While that difference may sound modest numerically, it represents a meaningful psychological shift,” says DeVoe. “It’s the difference between feeling neutral and feeling genuinely seen as a person.”
The authors then sought to better understand why paid vacation time made employees feel more human. In another experiment, about 500 participants were asked to imagine starting a new job where they might be awarded a bonus. Some were told the bonus would be an extra week of vacation, others were told it would be an extra week of pay.
Participants were then asked about their expectations for being able to keep their work and home lives separate in the new job. Those who could hope for a bonus of extra time off expected more separation between their work and personal lives than those whose potential bonus would be extra pay.
They also reported feeling more human on the 7-point scale. This suggested to the researchers that time off makes people feel more human because it creates a clearer psychological distance from work than a monetary bonus.
In a third experiment, the researchers further tested the idea that clear boundaries between work and personal lives were driving their results.
Two hundred participants were told to imagine being on a vacation and receiving two texts, including one from their mother. Half were told the second text was from a friend and half were told the second text was from their boss.
The authors then measured how human participants felt after each scenario. The average score for those receiving a text from a friend was 5.4 on the 7-point scale, compared with 4.16 for those receiving a text from the boss.
The difference in the scores “demonstrates that even minimal work intrusions can undo the psychological benefits of time off,” says DeVoe. “It shows that it’s not just time away that matters—it’s whether work actually lets go.”
All of this is important for employers looking to get the most out of their workers, he says. “For managers concerned with sustainable productivity, giving people uninterrupted time away from work can be a powerful lever.”