Charging the median electric car at home in Connecticut costs about $85 a month at 24.32 cents per kilowatt-hour — the 40th cheapest of 51 states, and 33 per cent above the national average. Petrol over the same 1,125 miles costs $170, so the saving is $84 a month, $1,014 a year; on the public side 64 registered cars share each fast-charging plug, against 55 in the typical state.
What electricity costs in Connecticut
The EIA published residential average for Connecticut is 24.32 cents per kWh (June 2026), against a US average of 18.34. That puts Connecticut at 40th of 51 states and DC, cheapest first — the dearer half of the country. The Chevrolet Equinox EV FWD sits in the middle of the 36 cars rated here at 31.1 kWh per 100 miles; in Connecticut that is $7.56 per 100 miles and $1,021 over a year, $21 a month more than the same car would cost at the national average rate.
Against a 27 mpg car at $4.07 a gallon, electricity stops being the cheaper fuel at about 48 cents per kWh. Connecticut is below that line by 24.15 cents, so the saving holds at the state-average rate before any overnight tariff is applied. It is an average across every household and every hour of the month: an overnight window beats it, a summer peak does not. The running-cost calculator takes your own tariff instead of the state’s.
Every EPA-rated car, charged at home in Connecticut
At the Connecticut average rate, one car in the database costs more to charge than the petrol car costs to fuel: GMC Hummer EV Pickup 3X. Everything above $170 a month in the table is in that position; everything below it saves money at the meter.
| Car | EPA kWh / 100 mi | Per 100 miles | Per month | Per year | Saved vs petrol / month |
|---|---|---|---|---|---|
| Lucid Air Pure RWD | 23.1 | $5.62 | $63 | $758 | $106 |
| Hyundai Ioniq 6 Long Range RWD | 26.0 | $6.32 | $71 | $854 | $98 |
| Tesla Model 3 Long Range AWD | 26.4 | $6.42 | $72 | $867 | $97 |
| Lexus RZ 350e FWD | 26.6 | $6.47 | $73 | $873 | $97 |
| Tesla Model Y Long Range AWD | 27.5 | $6.69 | $75 | $903 | $94 |
| Nissan Leaf 75 kWh | 27.8 | $6.76 | $76 | $913 | $94 |
| Subaru Solterra AWD | 28.0 | $6.81 | $77 | $919 | $93 |
| Toyota bZ4X AWD 73.1 kWh | 28.0 | $6.81 | $77 | $919 | $93 |
| BMW i4 eDrive40 | 28.5 | $6.93 | $78 | $936 | $92 |
| Kia EV3 Long Range FWD | 29.0 | $7.05 | $79 | $952 | $90 |
| Volvo EX30 Single Motor Extended Range | 29.2 | $7.10 | $80 | $959 | $90 |
| Audi Q4 45 e-tron | 29.4 | $7.15 | $80 | $965 | $89 |
| Kia EV6 84 kWh RWD | 29.6 | $7.20 | $81 | $972 | $89 |
| Polestar 2 Single Motor | 29.6 | $7.20 | $81 | $972 | $89 |
| Volkswagen ID.4 Pro | 29.8 | $7.25 | $82 | $978 | $88 |
| Hyundai Ioniq 5 84 kWh RWD | 30.0 | $7.30 | $82 | $985 | $88 |
| Ford Mustang Mach-E Extended Range RWD | 30.7 | $7.47 | $84 | $1,008 | $86 |
| Mercedes-Benz CLA 250+ with EQ Technology | 31.0 | $7.54 | $85 | $1,018 | $85 |
| Chevrolet Equinox EV FWD | 31.1 | $7.56 | $85 | $1,021 | $84 |
| Ford Mustang Mach-E Standard Range RWD | 31.4 | $7.64 | $86 | $1,031 | $84 |
| Cadillac Optiq RWD | 32.1 | $7.81 | $88 | $1,054 | $82 |
| Chevrolet Blazer EV FWD | 32.3 | $7.86 | $88 | $1,060 | $81 |
| Honda Prologue FWD | 32.5 | $7.90 | $89 | $1,067 | $81 |
| Genesis GV60 AWD | 33.6 | $8.17 | $92 | $1,103 | $78 |
| Nissan Ariya e-4ORCE 87 kWh | 36.6 | $8.90 | $100 | $1,202 | $69 |
| Cadillac Lyriq RWD | 36.8 | $8.95 | $101 | $1,208 | $69 |
| Acura ZDX RWD | 36.9 | $8.97 | $101 | $1,212 | $69 |
| Hyundai Ioniq 9 RWD | 37.0 | $9.00 | $101 | $1,215 | $68 |
| Porsche Taycan (rear-wheel drive) | 37.1 | $9.02 | $102 | $1,218 | $68 |
| Rivian R1S Dual Motor, Max pack | 39.9 | $9.70 | $109 | $1,310 | $60 |
| Kia EV9 99.8 kWh AWD | 40.0 | $9.73 | $109 | $1,313 | $60 |
| Tesla Cybertruck Long Range | 40.9 | $9.95 | $112 | $1,343 | $58 |
| Rivian R1T Dual Motor, Large pack | 42.9 | $10.43 | $117 | $1,408 | $52 |
| Ford F-150 Lightning Extended Range | 47.9 | $11.65 | $131 | $1,573 | $39 |
| Chevrolet Silverado EV Max Range | 49.5 | $12.04 | $135 | $1,625 | $34 |
| GMC Hummer EV Pickup 3X | 65.1 | $15.83 | $178 | $2,137 | −$9 |
| A 27 mpg petrol car at $4.07 a gallon | — | $15.07 | $170 | $2,035 | — |
Every kWh above is measured at the wall. At 24.32 cents the charging losses alone cost the median driver about $8 a month in Connecticut — a real line on the bill, and the reason this site does not quote battery-size arithmetic. Four cars have no US rating; they are in kilometres on the national page.
Public fast charging in Connecticut
Connecticut has 193 public DC fast-charging sites with 761 plugs in the federal AFDC station locator (2026-09-16), for 48,800 battery-electric cars registered in the state at the end of 2025.
Plug supply is the weaker half of the picture in Connecticut: 64 registered EVs for every public fast-charging plug where the typical state manages 55 — 33rd of 51 states, fewest cars per plug first. Home charging carries more of the load here than the raw site count suggests.
42% of the sites in Connecticut have a single plug and the state averages 3.9 plugs per site — enough that a busy stop usually has another bay, not enough to count on it off the interstate.
Tesla is the largest network in Connecticut with 56% of the plugs (428 of 761), the rest split among the other operators — enough competition that price and reliability are not one company decision.
Which plug fits in Connecticut
The plug question in Connecticut has a clear answer: 80% of the sites carry CCS1, the connector on almost every non-Tesla EV sold in the US, against 27% carrying the Tesla NACS plug. A CCS car has the run of the state; a Tesla is at home on its own network and needs an adapter elsewhere.
| Connector | Sites in Connecticut | Share of sites | Cars that use it |
|---|---|---|---|
| CCS1 (J1772 Combo) | 154 | 80% | Almost every non-Tesla EV sold in the US |
| NACS / J3400 (Tesla) | 53 | 27% | Teslas, and other cars with an adapter where the site allows it |
| CHAdeMO | 90 | 47% | Older Nissan Leaf and Mitsubishi only |
CHAdeMO is unusually well represented here: 47% of Connecticut’s sites still carry it (90 of 193). That is a legacy of early buildout rather than a live standard — no car sold new in the US takes it, and those bays are worth nothing to a car bought this decade.
Public fast charging does not follow the residential rate. At a typical network price of $0.48 per kWh the median car costs $14.93 per 100 miles — 2.0 times what the same miles cost at home in Connecticut, and still under the $15.07 the petrol car spends on them. The multiple is unusually small here, because Connecticut’s residential rate is already close to network pricing; public charging costs less of a premium than it does in most of the country. How long each car takes on a fast charger is on its charging page.
Connecticut against its neighbours
Every state on Connecticut’s borders charges more per kilowatt-hour — Connecticut is the cheapest place to plug in on this map. Crossing a border to charge is not a saving anyone in Connecticut can make; the monthly column is the Chevrolet Equinox EV FWD throughout, so the rows line up with every other state page here.
| State | Cents / kWh | Rank | Chevrolet Equinox EV FWD / month | Fast plugs | EVs per plug |
|---|---|---|---|---|---|
| Connecticut | 24.32 | 40th | $85 | 761 | 64 |
| Rhode Island | 29.23 | 46th | $102 | 146 | 67 |
| New York | 29.49 | 47th | $103 | 3,415 | 61 |
| Massachusetts | 29.61 | 49th | $104 | 1,971 | 58 |
How long the charge itself takes does not change with the state, only what it costs: the BMW i4 charging time, Porsche Taycan charging time and Nissan Ariya charging time are 28, 19 and 48 minutes from 10 to 80 per cent wherever you plug in, and each of those pages runs the same cost arithmetic as this one at the national average rate rather than Connecticut’s.
Frequently asked questions
How much does it cost to charge an electric car in Connecticut?
About $7.56 per 100 miles at home for the median EPA-rated car, $85 a month at 1,125 miles, using the EIA residential average of 24.32 cents per kWh. The most efficient car here, the Lucid Air Pure RWD, costs $63 a month; the least efficient, the GMC Hummer EV Pickup 3X, $178.
Is it cheaper to charge an EV than to buy petrol in Connecticut?
Yes. At 24.32 cents per kWh the median car costs $85 a month against $170 of petrol for a 27 mpg car at $4.07 a gallon — $84 a month in favour of Connecticut, $1,014 a year.
How many fast chargers are there in Connecticut?
193 sites and 761 plugs (AFDC, 2026-09-16), which 48,800 registered cars have to share — 64 per plug, against 55 in the median state. Only DC fast chargers are counted; Level 2 is not.
Can a non-Tesla use a Tesla charger in Connecticut?
Where the site is open to other brands, yes, with the right adapter. 53 of the 193 fast-charging sites in Connecticut carry the NACS plug (27%) and 154 carry CCS1 (80%), so a CCS car still has the larger of the two networks to fall back on. The plug on each car is listed on its model page.
Which electric car is cheapest to charge in Connecticut?
The Lucid Air Pure RWD, at 23.1 kWh per 100 miles: $5.62 per 100 miles and $63 a month in Connecticut. Picking it over the GMC Hummer EV Pickup 3X is worth $115 a month here, which is as much as the Connecticut rate ever makes efficiency worth; the full efficiency order is the same in every state.
Sources for the Connecticut figures
Electricity price 24.32 cents/kWh: EIA Electric Power Monthly table 5.6.A, June 2026. Sites, plugs and connectors for Connecticut: AFDC station locator, public DC fast only, 2026-09-16. A site counts once per connector it carries, so those rows sum above the site total. Registered EVs in Connecticut: AFDC registration counts, 2025, battery-electric only. Energy per 100 miles: EPA combined ratings, credited on each car’s page. Mileage, petrol price and the public DC rate are the standing assumptions on the methodology page.