Cost per kWh Formula:
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Definition: This calculator determines the cost per kilowatt-hour (kWh) of electricity based on the total cost and total energy consumed.
Purpose: It helps consumers and businesses understand their electricity costs and compare different utility rates or billing periods.
The calculator uses the formula:
Where:
Explanation: The total electricity cost is divided by the total energy consumed to find the price per unit of electricity.
Details: Understanding your cost per kWh helps with budgeting, comparing energy providers, evaluating energy efficiency improvements, and tracking utility costs over time.
Tips: Enter the total cost from your electricity bill and the total kWh used during that billing period. Both values must be greater than 0.
Q1: Where can I find these numbers on my bill?
A: The total cost is usually labeled "Amount Due" and kWh used is typically listed as "Energy Charge" or similar.
Q2: What's a typical cost per kWh?
A: Residential rates average $0.10-$0.30/kWh in the US, but vary by location and provider.
Q3: Should I use the total bill amount or just energy charges?
A: For true cost comparison, use the total bill amount including all fees and taxes.
Q4: How can I use this for solar panel calculations?
A: Knowing your cost per kWh helps calculate payback periods for solar investments.
Q5: Why is my cost per kWh different from my utility's advertised rate?
A: Your actual rate includes taxes, fees, and tiered pricing that may differ from the base rate.