Idaho Residential Rates

Residential rates for electricity are charged using tiered pricing. Tiered pricing means different rates are charged depending how much energy you use. The less energy a customer uses, the less energy the customer is charged at a higher rate. By staying in a lower tier, customers pay less. Tiered pricing encourages customers to conserve energy and use it efficiently.

Residential Tiered Rates

Service charge per month: $5.00

Summer (June–August)
Tier 1 Tier 2 Tier 3
Kilowatt-hours (kWh) 0–800 801–2,000 Over 2,000
Rate (cents per kWh) 8.5422¢ 10.2715¢ 12.2019¢
Non-Summer (September–May)
Tier 1 Tier 2 Tier 3
kWh 0–800 801–2,000 Over 2,000
Rate (cents per kWh) 7.9371¢ 8.7504¢ 9.6910¢

As an example, a residential customer who uses 1,050 kWh during March would be billed at the non-summer rate. The breakdown of this customer’s energy charges according to the tiered rate structure would be as follows:

800 kWh × 7.9371 cents (tier 1)=$63.50
250 kWh × 8.7504 cents (tier 2)=$21.88


=1050 kWh = $85.38

800 kWh x 7.9371 cents (tier 1) $63.50
+ 250 kWh x 8.7504 cents (tier 2) $21.88
= 1,050 kWh $85.38

If the same customer used 2,225 kWh during the same time, the energy charge would span all three tiers:

800 kWh x 7.9371 cents (tier 1) $63.50
1,200 kWh x 8.7504 cents (tier 2) $105.01
+ 225 kWh x 9.6910 cents (tier 3) $21.80
= 2,225 kWh  $190.31

If that same customer used only 800 kWh during the same time, the energy charge would fall only into the lower-price tier 1:

800 kWh × 7.9371 cents (tier 1) = $63.50

Being energy efficient saves customers money!

Please note: The information outlined here includes only what a residential customer will be billed for their energy charges. It does not include other items or charges found on your Idaho Power bill; therefore, your actual bill may be different.