Fictional worked example

Rebuild a flat-rate electricity statement

The energy charge and the amount due are different figures. This sample first bill shows how 460 kWh, a flat rate and a fixed service fee fit together.

Open Calculator

Inputs and calculation

First statement
Tool inputValue
CurrencyUSD
UtilityElectricity (kWh)
Metered usage460
Tariff typeFlat rate
Price per billing unit (USD)0.18
Service fee (USD)10
Tax on usage plus service fee (%)0

460 × 0.18 + 10 = 92.80.

Tool result · USD 92.80

With a 60 kWh reduction
Tool inputValue
CurrencyUSD
UtilityElectricity (kWh)
Metered usage400
Tariff typeFlat rate
Price per billing unit (USD)0.18
Service fee (USD)10
Tax on usage plus service fee (%)0

400 × 0.18 + 10 = 82.00.

Tool result · USD 82.00

What the comparison shows

The reduction is worth 10.80 at the sample rate. The account still owes the full service charge.

Assumptions and limits

Use the tariff for the billing period. The sample statement has no demand or time-of-use charges.

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