Generator vs Battery Cost in New Hampshire

This page compares the cost to recharge a standard 13.5 kWh home battery with the hourly fuel cost of a typical gasoline generator. Both figures are operating costs only—no purchase price or maintenance.

Electricity rate
23.35 ¢/kWh
13.5 kWh recharge
$3.15
13.5 kWh (with losses)
$3.50
Generator fuel/hr
$2.81

Cost Comparison

ScenarioCost
13.5 kWh battery recharge (baseline)$3.15
13.5 kWh battery recharge (with losses)$3.50
Generator operating cost per hour$2.81

Generator Hours at Equal Cost

In New Hampshire, one 13.5 kWh battery recharge with charging losses costs about $3.50. That equals roughly 1.2 hours of generator operation at $2.81/hr under the assumptions used on this page.

13.5 kWh Recharge vs National Average

13.5 kWh in New Hampshire
$3.15
13.5 kWh nationally
$2.37
Difference
+$0.78 (+32.9%)

Cost Comparison Chart

Battery vs generator costBattery vs generator cost. New Hampshire — electricity at 23.35¢/kWh, generator at $3.75/gal. 13.5 kWh battery (baseline): $3.15; 13.5 kWh battery (with losses): $3.50; Generator per hour: $2.8113.5 kWh battery (baseline)$3.1513.5 kWh battery (with losses)$3.50Generator per hour$2.81
New Hampshire — electricity at 23.35¢/kWh, generator at $3.75/gal

This page compares operating/recharge cost only. It does not compare purchase cost, battery lifespan, maintenance, outage performance, noise, installation, or safety.

More Data & Comparisons

Related electricity pages

Frequently Asked Questions

How much does it cost to recharge a 13.5 kWh battery in New Hampshire?
At the average rate of 23.35¢/kWh, recharging a 13.5 kWh home battery costs approximately $3.15 (baseline) or about $3.50 with 10% charging losses.
How much does a gasoline generator cost to run per hour?
Under our assumptions (0.75 gal/hr at $3.75/gallon), a typical gasoline generator costs about $2.81 per hour to run.
Is recharging a home battery cheaper than running a generator in New Hampshire?
One 13.5 kWh battery recharge with losses costs about $3.50 in New Hampshire. That equals roughly 1.2 hours of generator operation at $2.81/hr. Whether battery or generator is cheaper depends on how many hours you run and how often you recharge.
What assumptions are used on this page?
We use: 13.5 kWh battery, 90% charging efficiency, 0.75 gal/hr generator fuel use, and $3.75/gallon gasoline. Electricity rates come from EIA data and vary by state.

Disclaimers