WattCost

Data through April 2026

Running cost · Water Heaters (Electric) · ENERGY STAR certified

Richmond 10E50-HP120

Heating a typical household's hot water, the Richmond 10E50-HP120 is certified at 1,082 kWh a year — about $204 at the U.S. average electricity rate, or $16.98 a month. Efficiency-wise it's unremarkable in a good way: within 0% of the median certified electric water heater (rank 286 of 566). Where you live moves the bill from $134 a year in North Dakota to $504 in Hawaii.

Estimated annual running cost · U.S. average rate 18.8¢/kWh

$204/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$16.98
Per day
56¢
Certified use
1,082 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
120 Volt Integrated HPWH
Storage volume
46 gal
First-hour rating
51 gal
UEF
3
643 kWh1,741 kWh
Where the Richmond 10E50-HP120 (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

Richmond 10E50-HP120: 1,082 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$188
Alaska27.4¢$296
Arizona15.5¢$167
Arkansas14.2¢$153
California35.3¢$381
Colorado16.5¢$179
Connecticut32.2¢$349
Delaware18.8¢$203
District of Columbia25.4¢$275
Florida15.4¢$166
Georgia15.4¢$166
Hawaiipriciest46.6¢$504
Idaho12.7¢$137
Illinois20.5¢$221
Indiana17.9¢$194
Iowa13.9¢$150
Kansas15.8¢$171
Kentucky15.0¢$163
Louisiana14.4¢$156
Maine28.4¢$308
Maryland22.1¢$239
Massachusetts29.4¢$319
Michigan21.4¢$231
Minnesota16.4¢$177
Mississippi16.8¢$181
Missouri14.0¢$152
Montana13.9¢$150
Nebraska13.3¢$144
Nevada14.3¢$155
New Hampshire27.2¢$295
New Jersey23.5¢$255
New Mexico15.2¢$164
New York29.4¢$319
North Carolina16.3¢$176
North Dakotacheapest12.3¢$134
Ohio19.5¢$211
Oklahoma13.3¢$144
Oregon15.8¢$171
Pennsylvania21.5¢$232
Rhode Island28.3¢$306
South Carolina17.1¢$185
South Dakota14.5¢$157
Tennessee14.9¢$162
Texas17.0¢$184
Utah13.3¢$144
Vermont24.6¢$266
Virginia17.4¢$188
Washington14.4¢$155
West Virginia16.1¢$174
Wisconsin19.2¢$208
Wyoming14.7¢$159

Certified models closest in efficiency

electric water heaters within reach of 1,082 kWh/yr
ModelkWh/yr$/yr (US avg)
Friedrich PROH50 T0 FD1201,082$204
Rheem PROPH50 T0 RH1201,082$204
Rheem XE50T10H15U01,082$204
Rheem XE50T10HD00U01,082$204
Ruud PROUH50 T0 RU1201,082$204
Friedrich PROH50 T0 FD120-M1,072$202

Run your own numbers

Your rate, your numbers

Per day
56¢
Per month
$16.98
Per year
$204

1,082 kWh/yr × 18.8¢/kWh = $204/yr

Prefilled with this model's certified 1,082 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the DOE Uniform Energy Factor test, which simulates a typical household's daily hot-water draw pattern. Only electric models (including heat-pump units) are listed — gas models burn gas, not kWh.

Questions, answered with the data

How much electricity does the Richmond 10E50-HP120 use?
ENERGY STAR certifies the Richmond 10E50-HP120 at 1,082 kWh per year. The certified annual kWh comes from the DOE Uniform Energy Factor test, which simulates a typical household's daily hot-water draw pattern. Only electric models (including heat-pump units) are listed — gas models burn gas, not kWh.
How much does the Richmond 10E50-HP120 cost to run per month?
About $16.98 a month at the U.S. average residential rate (18.8¢/kWh) — 56¢ a day, or $204 a year. Your state's rate moves this up or down; see the table above.
Is the Richmond 10E50-HP120 energy efficient?
It uses 0% less electricity than the median certified electric water heater.
What does the Richmond 10E50-HP120 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $134 a year in North Dakota (12.3¢/kWh) and $504 in Hawaii (46.6¢/kWh).

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