Calculate your electricity bill under tiered (block) pricing. Enter usage and rate for each tier to find total cost and effective rate per kWh.
Tiered pricing (also called inclining block rates) is a common electricity billing structure where the rate per kWh increases as you use more electricity. The first "baseline" tier covers essential usage at the lowest rate, while subsequent tiers cost progressively more. This structure incentivizes conservation by making high usage disproportionately expensive.
A typical tiered plan might charge $0.10/kWh for the first 500 kWh, $0.15/kWh for the next 500 kWh, and $0.25/kWh for usage above 1,000 kWh. Under this structure, a household using 1,200 kWh pays far more per kWh than one using 400 kWh.
This calculator lets you enter your usage and rate for each tier to see total cost and effective average rate. Understanding which tier your usage falls into helps you identify the most cost-effective conservation targets — reducing usage in the highest tier saves the most money per kWh avoided.
Quantifying this parameter enables systematic comparison across facilities, time periods, and equipment configurations, revealing optimization opportunities that reduce both costs and emissions.
Tiered pricing means the last kWh you use each month is the most expensive. This calculator shows exactly which tiers your usage hits and where conservation efforts yield the biggest savings per kWh. Precise quantification supports regulatory compliance and sustainability reporting, ensuring that energy data meets the standards required by auditors and industry certification bodies.
Total Cost = Σ(kWh in Tier × Tier Rate)
Result: $175.00/month
Tier 1: 500 × $0.10 = $50. Tier 2: 500 × $0.15 = $75. Tier 3: 200 × $0.25 = $50. Total: $175 for 1,200 kWh (effective rate: $0.146/kWh).
Utilities define 2–4 usage tiers, each with a rate and a kWh ceiling. Your usage is charged at each tier's rate as it fills from bottom to top. You always pay the Tier 1 rate for the first block of kWh, regardless of total usage.
The most cost-effective conservation targets the highest tier. If you're paying $0.25/kWh in Tier 3, every kWh reduced there saves $0.25, while reducing Tier 1 usage only saves $0.10. Focus energy audits and upgrades on the loads that push you into expensive tiers.
Tiered pricing penalizes total volume; TOU pricing penalizes the timing of usage. If you use a lot of electricity but can shift most of it to off-peak, TOU may be cheaper. If your usage is moderate and you can't shift timing, tiered pricing may be cheaper. Most utilities let you choose.
Tiered pricing charges different rates for different usage levels. The first tier (baseline usage) has the lowest rate. Each subsequent tier has a higher rate. This structure encourages conservation by making excessive usage more expensive.
Your electric bill typically shows your total kWh and the breakdown by tier. You can also check your utility's rate schedule online. Most utilities define 2–4 tiers based on percentage of baseline or fixed kWh thresholds.
For low-usage households, tiered pricing is typically cheaper because the first tier rate is below the flat rate. For high-usage households, the upper tiers can make tiered pricing significantly more expensive than a flat rate.
Many utilities set the Tier 1 threshold based on a "baseline allocation" that varies by climate zone, season, and housing type. For example, a baseline might be 400 kWh/month in a mild climate and 700 kWh in a hot climate where more AC is expected.
Yes. Solar panels reduce your net metered usage. If solar production offsets enough kWh to keep you within Tier 1 or 2, you avoid the expensive upper tiers entirely. This is one of the key financial benefits of solar under tiered pricing.
An inclining block rate is another term for tiered pricing where each successive "block" of usage costs more per kWh. Some utilities have declining block rates (rare now), where rates decrease with higher usage, incentivizing more consumption.