METRONMETHOD. REASON. LEARN.
Everyday Lab

Understand an electricity bill

Separate energy usage from the daily supply charge. Enter illustrative charges to see how each contributes to the total.

Your experiment

Change any value to update the result. Use the stated units.

What the numbers tell us

Enable JavaScript to calculate with your own values.

Why it works

total = energy × usage rate + days × supply charge

Assumptions and limits

Enter tax-inclusive rates. Assumes a flat tariff, with no demand charges, time-of-use bands, rebates or solar credits. Example prices are not current offers.

Try a small challenge

100 kWh at $0.30/kWh plus 10 days at $1/day. Total?
A little hint

Calculate usage and supply separately.

Understand the idea: Electrical power and energy →