ECC
$0.1834U.S. residential average · approximate · editable

PAYBK · Keep or replace

Test whether replacement pays back.

Compare energy savings with purchase cost, discounted value, and an editable decision horizon.

For a tariff calculation, include both supply and delivery charges per kWh. A state average includes revenue from fixed charges and taxes; do not add these again when using an average.Use your delivered electricity price, or keep the approximate average.
Existing appliance
Look for watts (W) on the appliance nameplate, EnergyGuide label, product manual, or manufacturer specification. A plug-in power meter gives a measured value.
Estimate the hours this appliance actively runs on a typical day. A timer, smart plug, or usage log can improve this estimate.
Replacement
Look for watts (W) on the appliance nameplate, EnergyGuide label, product manual, or manufacturer specification. A plug-in power meter gives a measured value.
Estimate the hours this appliance actively runs on a typical day. A timer, smart plug, or usage log can improve this estimate.
Use the final appliance price from a retailer quote or receipt, including installation when it differs between options.
Financial assumptions · 10 years, 5% discount, 3% price growth
Financial assumptions
How many years you plan to own or use this appliance
How much future savings are worth less than savings today — use 0% for a simple comparison
Expected yearly increase in electricity prices
Checking the ECC API…

Annual bill savings

$244.33/year

Simple payback

4.9 years

10-year net value

$937.34NPV

The replacement changes annual operating cost from $334.71 to $90.37.

Simple payback is 4.9 years, within the selected analysis period. Discounted net value is non-negative over 10 years.
4.9 yr
Year 0Year 10

Source: Manual rate · June 2026 monthly average · User-provided calculation input · selected rate source: Government aggregate · approximate

Daily energy is estimated from rated power, runtime, and appliance quantity; annual energy uses the supplied days per year. · Costs apply the supplied manual flat rate uniformly to daily, average-monthly, and annual energy. · Analysis year 2026 labels the scenario; no calendar or rate escalation adjustment is applied. · Electricity savings escalate by the supplied 3% per year. · Maintenance delta is new-appliance maintenance minus old-appliance maintenance; missing years are zero.