Dishwasher running cost in Arizona vs Massachusetts vs Washington: what 10 years of a 238 kWh-a-year dishwasher costs
Among Arizona, Massachusetts, and Washington, Washington has the lowest projected 10-year running cost for a 238 kWh-a-year dishwasher: $1,100 ($13.54 below the next-cheapest state). Arizona: $1,114; Massachusetts: $1,611; Washington: $1,100. These are projected totals in US dollars for electricity, upkeep and expected repairs at each state's latest residential electricity price, not a utility bill.
What stays the same in every column?
In this comparison of Arizona, Massachusetts, and Washington (projected totals in US dollars), every column uses a 238 kWh-a-year dishwasher, a new appliance, 10 years and a purchase price of zero. Only the state changes, and with it the residential electricity price. Each column is its own call to the same API with the same inputs. Compare the totals to see how much of the cost the local electricity price sets, lowest first: Washington $1,100; Arizona $1,114; Massachusetts $1,611. The calculation table reports the dollar figures the API returned, with the low and high end of the range for each state.
How much does the electricity price differ by state?
The state is the only input that changes between columns, and with it the residential electricity price. Compare the prices to see how far the electricity cost of running a dishwasher differs by state.
- Arizona: $0.1505 per kWh
- Massachusetts: $0.3048 per kWh
- Washington: $0.1463 per kWh
How wide is the range of the running cost?
Each range runs from the 5th to the 95th percentile of simulated ownership paths. Compare the ranges to see the spread of the running cost of a dishwasher in each state.
- Arizona: $771 to $1,586
- Massachusetts: $1,221 to $2,132
- Washington: $758 to $1,592
What does the projection cover?
For Arizona, Massachusetts, and Washington, the projected totals in US dollars cover electricity, upkeep and expected repairs at each state's latest residential electricity price. The price is the latest EIA residential price for each state, and annual energy use is the stated input. The range is the 5th to 95th percentile of thousands of simulated ownership paths that vary energy price, yearly use, maintenance and repair events. It does not cover error in the authored assumptions. Purchase price is set to zero, so each total is the cost of running the appliance: electricity, upkeep and expected repairs. Authored, not fetched: appliance lifetime and failure timing (Weibull scale and shape), brand reliability, repair and maintenance costs, resale value, the 4% discount rate, 1% a year efficiency loss and water price growth. Annual energy use is your input; ENERGY STAR class means are at /v1/data/appliance-specs.
Calculation provenance
Electricity price: the latest EIA residential price for Arizona, 0.1505 dollars per kWh (2026-08). Growth: the BLS CPI-U electricity index (series CUUR0000SEHF01), 4.40 percent a year. Sample size UNAVAILABLE. Inspect the API. More Celvanto comparisons. Read the EIA electricity prices. Read about the consumer price index. Response hashes and retrieval times are retained separately in the calculation record.
Try your own numbers
Open the Celvanto calculator. Enter your own appliance, its age and price, and your state there to see its lifecycle cost with a 5th to 95th percentile range.
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Calculation data
| Input | Value |
|---|---|
| type | dishwasher |
| annual Energy Consumption | 238 |
| years | 10 |
| Measure | Arizona | Massachusetts | Washington |
|---|---|---|---|
| Projected 10-year running cost of a 238 kWh-a-year dishwasher (USD) | 1,113.76 | 1,611.01 | 1,100.22 |
| Cost at the 5th percentile of simulated ownership paths (USD) | 771.00 | 1,221.00 | 758.00 |
| Cost at the 95th percentile of simulated ownership paths (USD) | 1,586.00 | 2,132.00 | 1,592.00 |
| Residential electricity price in Arizona (USD per kWh) | 0.1505 | 0.3048 | 0.1463 |
| Distance from winning value (USD) | 13.54 | 510.79 | 0.00 |
| Decision | Alternative value | Alternative value | Winning value |
Winner: Washington. Objective: minimize. Margin to next option: 13.54 USD. Assumption: Lowest projected running cost of the stated appliance over the stated years only. Where you live is not a choice this compares: it shows how much of the cost is the local electricity price. Your own appliance, usage and utility rate plan will move the numbers.
- winner
- wa
- objective
- minimize
- metric
- totalCost
Source and assumptions
- Electricity price: the latest EIA residential price for Arizona, 0.1505 dollars per kWh (2026-08). Growth: the BLS CPI-U electricity index (series CUUR0000SEHF01), 4.40 percent a year.
- The range is the 5th to 95th percentile of thousands of simulated ownership paths that vary energy price, yearly use, maintenance and repair events. It does not cover error in the authored assumptions.
- Purchase price is set to zero, so each total is the cost of running the appliance: electricity, upkeep and expected repairs.
- Authored, not fetched: appliance lifetime and failure timing (Weibull scale and shape), brand reliability, repair and maintenance costs, resale value, the 4% discount rate, 1% a year efficiency loss and water price growth. Annual energy use is your input; ENERGY STAR class means are at /v1/data/appliance-specs.
Arizona. Data layer: Celvanto electricity_prices (EIA) and appliance_cpi (BLS). Source: EIA Electric Power Monthly Table 5.6.A; BLS CPI-U CUUR0000SEHF01. Vintage: Prices 2026-08, fetched 2026-11-06; price index fetched 2026-10-11. Sample size: UNAVAILABLE.
Fetched: 2026-11-10T20:25:24.591Z
Source updated: EIA 5.6.A 2026-08 (fetched 2026-11-06); BLS CUUR0000SEHF01 to 2026-08 (fetched 2026-10-11)
Cache: Unreported
Response SHA-256
400ad60f01078670b4c4f233701075cc07cc732b012876b23725f65cf7f3afb1Massachusetts. Data layer: Celvanto electricity_prices (EIA) and appliance_cpi (BLS). Source: EIA Electric Power Monthly Table 5.6.A; BLS CPI-U CUUR0000SEHF01. Vintage: Prices 2026-08, fetched 2026-11-06; price index fetched 2026-10-11. Sample size: UNAVAILABLE.
Fetched: 2026-11-10T20:25:24.908Z
Source updated: EIA 5.6.A 2026-08 (fetched 2026-11-06); BLS CUUR0000SEHF01 to 2026-08 (fetched 2026-10-11)
Cache: Unreported
Response SHA-256
a7a8e9f0a4884e1b87920e994252dee658263623a8d1c55f6b343e17d3ab0a41Washington. Data layer: Celvanto electricity_prices (EIA) and appliance_cpi (BLS). Source: EIA Electric Power Monthly Table 5.6.A; BLS CPI-U CUUR0000SEHF01. Vintage: Prices 2026-08, fetched 2026-11-06; price index fetched 2026-10-11. Sample size: UNAVAILABLE.
Fetched: 2026-11-10T20:25:25.698Z
Source updated: EIA 5.6.A 2026-08 (fetched 2026-11-06); BLS CUUR0000SEHF01 to 2026-08 (fetched 2026-10-11)
Cache: Unreported
Response SHA-256
e29c3da581fa248892e61846d328833bbbd03556b6439bf5a63eeeff0f5190d6Questions about this comparison
Where does it cost the least to run a dishwasher: Arizona, Massachusetts, and Washington?
Among Arizona, Massachusetts, and Washington, Washington has the lowest projected 10-year running cost for a 238 kWh-a-year dishwasher: $1,100 ($13.54 below the next-cheapest state). Arizona: $1,114; Massachusetts: $1,611; Washington: $1,100. These are projected totals in US dollars for electricity, upkeep and expected repairs at each state's latest residential electricity price, not a utility bill.
What is held constant in this comparison?
In this comparison of Arizona, Massachusetts, and Washington (projected totals in US dollars), every column uses a 238 kWh-a-year dishwasher, a new appliance, 10 years and a purchase price of zero. Only the state changes, and with it the residential electricity price. Each column is its own call to the same API with the same inputs.
What do these projections cover?
For Arizona, Massachusetts, and Washington, the projected totals in US dollars cover electricity, upkeep and expected repairs at each state's latest residential electricity price. The price is the latest EIA residential price for each state, and annual energy use is the stated input. The range is the 5th to 95th percentile of thousands of simulated ownership paths that vary energy price, yearly use, maintenance and repair events. It does not cover error in the authored assumptions. Purchase price is set to zero, so each total is the cost of running the appliance: electricity, upkeep and expected repairs. Authored, not fetched: appliance lifetime and failure timing (Weibull scale and shape), brand reliability, repair and maintenance costs, resale value, the 4% discount rate, 1% a year efficiency loss and water price growth. Annual energy use is your input; ENERGY STAR class means are at /v1/data/appliance-specs.
How can I try my own numbers?
The totals in US dollars for Arizona, Massachusetts, and Washington come from this page's comparison. Enter your own appliance, its age and price, and your state in the calculator to see its lifecycle cost with a 5th to 95th percentile range.