Gas vs. electric driving costs · adjust vehicle and price period below
Why is it like this in Connecticut?
Connecticut shares New England's structural electricity-cost problem: pipeline constraints, aging infrastructure, and the cost of clean-energy mandates have pushed residential rates to about 27.8¢/kWh. Combined with relatively normal gasoline prices, the result is one of the few U.S. states where filling up a plug-in hybrid is currently cheaper than charging it. Through 2024 and early 2026, the cost advantage of gasoline was small but real. The Iran conflict has temporarily reversed it: at conflict-elevated gas prices, electricity is now the cheaper per-mile option in Connecticut. That reversal is likely temporary — at pre-conflict baseline prices, gasoline is cheaper, and New England's grid infrastructure challenges remain unresolved.
In the news · Connecticut
Canadian hydropower supplies a significant share of New England's grid; a 10% tariff on Canadian energy imports threatened to reverse Connecticut's efforts to bring down Eversource and Avangrid rates, which already rank among the nation's highest at roughly 30–35¢/kWh — making gas the cheaper per-mile option for most PHEVs in the state.
Surge in PHEV/EV purchases before federal tax credits expired exhausted Connecticut's CHEAPR rebate fund, forcing DEEP to cut the standard rebate from $1,500 to $500 — raising the net cost of switching to plug-in vehicles at a time when electricity rates already undercut the economic case for charging over fueling.
Connecticut's legislature authorized $155 million in state borrowing to offset Eversource and United Illuminating supply costs, shaving roughly 1–2¢/kWh off residential bills — a sign of how politically untenable the state's 30¢+/kWh rates had become.
Curated coverage of Connecticut's EV/PHEV cost, policy, and infrastructure story. External links open in a new tab.
Northeast region comparison
| State | Electric ¢/mi | Gas ¢/mi | Cheaper | Annual diff |
|---|---|---|---|---|
| Delaware | 5.0¢ | 7.7¢ | ⚡ Electric | $323/yr |
| Pennsylvania | 6.1¢ | 8.0¢ | ⚡ Electric | $224/yr |
| Maryland | 6.2¢ | 7.8¢ | ⚡ Electric | $188/yr |
| Vermont | 7.1¢ | 7.9¢ | ⚡ Electric | $97/yr |
| New Jersey | 7.0¢ | 7.3¢ | ⚡ Electric | $31/yr |
| New Hampshire | 8.0¢ | 7.4¢ | ⛽ Gas | $68/yr |
| New York | 8.6¢ | 7.8¢ | ⛽ Gas | $91/yr |
| Connecticut | 8.6¢ | 7.5¢ | ⛽ Gas | $128/yr |
| Rhode Island | 9.1¢ | 7.4¢ | ⛽ Gas | $204/yr |
| Maine | 9.3¢ | 7.6¢ | ⛽ Gas | $206/yr |
| Massachusetts | 9.4¢ | 7.6¢ | ⛽ Gas | $219/yr |