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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteCompare EV charging costs across 3 utilities and browse installation data for 62 towns. Rates 17.1¢–37.0¢/kWh by utility — about $11.12 per 100 miles at the highest rate.
17.1¢–37.0¢
/kWh by utility
$11.12
at high rate
$266
EV vs gasoline
3
1 IOU · 2 Muni · 0 Co-op
Rhode Island homeowners across 62 towns are served by 3 electric utilities, with residential rates ranging from 17.1¢ to 37.0¢ per kWh. Even at the highest utility rate (37.0¢/kWh), charging an EV costs about $11.12 per 100 miles — compared to roughly $13.33 per 100 miles for gasoline. That translates to annual fuel savings of $266.
A Level 2 home charger (240V, 40-50A) adds 25-37 miles of range per hour, fully charging most EVs overnight. Charger units cost $500-$800 and installation runs $500-$1,500 depending on panel distance and whether a sub-panel upgrade is needed. Total cost before rebates is typically $1,000-$2,300.
The federal Section 30C EV charger tax credit (30% up to $1,000) is still available for installations completed by June 30, 2026. The Rhode Island Energy also offers up to $500 toward your charger purchase or installation. RI Energy EV charger rebate. Many Rhode Island utilities also offer their own EV charger rebates — browse the utility cards below for specifics.
NuWatt Energy installs EV chargers directly across Rhode Island — licensed electricians, dedicated local crews. We handle the full process: electrical assessment, panel capacity check, charger selection, installation, and all permitting. Pair with a home solar system to charge your EV with free energy from your roof.
Based on highest utility rate of 37.0¢/kWh
EV Cost per 100 Miles
$11.12
30 kWh × 37.0¢/kWh
Gas Cost per 100 Miles
$13.33
$4.00/gal · 30 mpg
Annual EV Charging Cost
$1,334
12,000 miles/year
Annual Fuel Savings
$266
vs $1,600/yr gasoline
$500-$800
$500-$1,500
$1,000-$2,300
30% up to $1,000 for residential EV charger installation. Available for installations completed by June 30, 2026.
RI Energy EV charger rebate.
Many Rhode Island utilities offer EV charger rebates that stack with state programs. See the utility cards below for specific amounts.
3 utilities · sorted by rate
62 towns with utility-specific data
Our recommended Level 2 chargers, all Energy Star certified and compatible with every EV brand.
Based on highest utility rate of 37.0¢/kWh
NuWatt installs Level 2 chargers directly across Rhode Island. Licensed electricians, dedicated local crews.
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