outdoor · 1400W typical

Running a ev charger level 1 (120v) costs about $69.30/month.

That's the typical ev charger level 1 (120v) at 1400W, run 10 hours a day at the US-average rate of 16.5¢/kWh. Change any of those and the number moves — use the calculator below to see yours.

Estimated cost

$69.30/month

$2.31 per day$843.15 per year420.0 kWh monthly

Wattage

Hours / day

Your rate

Full-power draw for 10 hours at 16.5¢/kWh.

How you use it

Cost shifts with how long it's on.

The same ev charger level 1 (120v) can cost very different amounts depending on usage patterns. Three common scenarios, at the US-average rate.

overnight charging

$69.30

per month

plug-in all night

10 hrs/day·$843.15/yr

daily commute only

$27.72

per month

shorter daily top-up

4 hrs/day·$337.26/yr

Where you live

$125.58 spread between the cheapest and priciest states.

Same appliance, same hours of use, different zip code — the monthly cost varies this much.

State	Rate	Monthly	Yearly
Hawaii	41.2¢	$173.04	$2,105.32
California	31.4¢	$131.88	$1,604.54
Massachusetts	30.8¢	$129.36	$1,573.88
Connecticut	28.7¢	$120.54	$1,466.57
Rhode Island	27.9¢	$117.18	$1,425.69
New Hampshire	24.6¢	$103.32	$1,257.06
Alaska	24.3¢	$102.06	$1,241.73
New York	22.3¢	$93.66	$1,139.53
Maine	22.1¢	$92.82	$1,129.31
Vermont	21.5¢	$90.30	$1,098.65
Michigan	19.3¢	$81.06	$986.23
New Jersey	19.1¢	$80.22	$976.01
Maryland	18.4¢	$77.28	$940.24
Pennsylvania	18.1¢	$76.02	$924.91
District of Columbia	17.8¢	$74.76	$909.58
Wisconsin	17.4¢	$73.08	$889.14
Delaware	17.2¢	$72.24	$878.92
Illinois	16.9¢	$70.98	$863.59
Ohio	16.6¢	$69.72	$848.26
Nevada	16.3¢	$68.46	$832.93
Indiana	15.8¢	$66.36	$807.38
Virginia	15.7¢	$65.94	$802.27
Minnesota	15.6¢	$65.52	$797.16
Colorado	15.4¢	$64.68	$786.94
Alabama	15.2¢	$63.84	$776.72
West Virginia	15.2¢	$63.84	$776.72
Florida	15.1¢	$63.42	$771.61
New Mexico	14.8¢	$62.16	$756.28
Texas	14.8¢	$62.16	$756.28
Arizona	14.7¢	$61.74	$751.17
South Carolina	14.7¢	$61.74	$751.17
Kansas	14.6¢	$61.32	$746.06
Georgia	14.2¢	$59.64	$725.62
Iowa	14.1¢	$59.22	$720.51
North Carolina	13.9¢	$58.38	$710.29
Missouri	13.6¢	$57.12	$694.96
Oregon	13.4¢	$56.28	$684.74
Tennessee	13.3¢	$55.86	$679.63
Kentucky	13.2¢	$55.44	$674.52
Mississippi	13.1¢	$55.02	$669.41
Oklahoma	13.1¢	$55.02	$669.41
South Dakota	12.7¢	$53.34	$648.97
Montana	12.4¢	$52.08	$633.64
Nebraska	12.2¢	$51.24	$623.42
Arkansas	12.1¢	$50.82	$618.31
Washington	12.1¢	$50.82	$618.31
Louisiana	11.9¢	$49.98	$608.09
Wyoming	11.6¢	$48.72	$592.76
North Dakota	11.5¢	$48.30	$587.65
Utah	11.4¢	$47.88	$582.54
Idaho	11.3¢	$47.46	$577.43

Efficient vs. inefficient

A $481.80/year difference across the wattage range.

Swapping a high-draw model for an efficient one pays for itself. Here's what that looks like annually at typical usage.

Most efficient

1000W

$49.50 per month

$602.25 per year

Typical

1400W

$69.30 per month

$843.15 per year

High draw

1800W

$89.10 per month

$1,084.05 per year

When it hits hardest

winter peak

Winter cold reduces battery efficiency, increasing kWh/mile.

Ways to cut the cost

1
Upgrade to Level 2 — less overall energy lost to charging overhead
Level 2 is 10-20% more efficient end-to-end
2
Charge during off-peak hours if on time-of-use rates
Saves 30-60% on TOU plans
3
Keep cord in good condition — frayed cords lose watts
Avoids 5-10% resistive loss

Real-world wattages

Pulled from actual spec sheets.

Brand	Model	Watts
Tesla	Mobile Connector 120V	1440W
Lectron	Level 1 Portable	1440W
Chevrolet	Bolt EV Level 1 Charger	1440W

Picks that actually move the needle

Three products worth comparing if you're thinking about upgrading or supplementing what you have.

Some links below are affiliate links. If you buy, we may earn a small commission — it never changes the price you pay, and we only recommend picks we would stand behind.

Kill A Watt P3 P4460 Meter

Verify actual charge rate for billing estimates

$28-35

Outdoor-Rated Extension Cord 12 AWG

Thinner cords lose efficiency to resistance

$40-60

Smart Plug 20A with Monitoring

Track monthly charging cost

$18-25