Electricity plan cost calculator

Compare the same month, line by line

Enter your usage in kWh and the supply rates in cents per kWh. Enter delivery as a shared variable rate, plus the shared monthly delivery fee. Each plan has its own monthly supplier fee. A change in supplier usually does not eliminate delivery charges. All defaults are illustrative, not current offers.

The formula is usage × (supply cents + delivery cents) ÷ 100 + supplier fee + delivery fee. At 800 kWh, Plan A at 10 cents with a $5 fee and Plan B at 11 cents with no supplier fee produce $85 and $88 in supply costs. Adding illustrative delivery of 5 cents per kWh and $12 per month produces totals of $137 and $140. The difference is $3 for that month.

Repeat with a low and high usage month. This model excludes taxes, conditional credits, minimum usage, tiered rates, cancellation fees, and demand charges. It assumes both plans have the same delivery tariff. A positive saving means Plan B costs less; a negative figure means Plan A costs less. Equal results are a tie, not a recommendation. Read the written contract and use the comparison guide before enrolling.