WattCost

Data through April 2026

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

Richmond 10E50-HP120MS

Heating a typical household's hot water, the Richmond 10E50-HP120MS is certified at 1,072 kWh a year — about $202 at the U.S. average electricity rate, or $16.82 a month. That's close to the middle of the certified pack — about 1% under the median electric water heater, ranked 279 of 566. Where you live moves the bill from $132 a year in North Dakota to $500 in Hawaii.

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

$202/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$16.82
Per day
55¢
Certified use
1,072 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
120 Volt Integrated HPWH
Storage volume
46 gal
First-hour rating
55 gal
UEF
3
643 kWh1,741 kWh
Where the Richmond 10E50-HP120MS (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

Richmond 10E50-HP120MS: 1,072 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$187
Alaska27.4¢$293
Arizona15.5¢$166
Arkansas14.2¢$152
California35.3¢$378
Colorado16.5¢$177
Connecticut32.2¢$346
Delaware18.8¢$201
District of Columbia25.4¢$272
Florida15.4¢$165
Georgia15.4¢$165
Hawaiipriciest46.6¢$500
Idaho12.7¢$136
Illinois20.5¢$219
Indiana17.9¢$192
Iowa13.9¢$149
Kansas15.8¢$169
Kentucky15.0¢$161
Louisiana14.4¢$155
Maine28.4¢$305
Maryland22.1¢$237
Massachusetts29.4¢$316
Michigan21.4¢$229
Minnesota16.4¢$176
Mississippi16.8¢$180
Missouri14.0¢$150
Montana13.9¢$149
Nebraska13.3¢$142
Nevada14.3¢$153
New Hampshire27.2¢$292
New Jersey23.5¢$252
New Mexico15.2¢$162
New York29.4¢$316
North Carolina16.3¢$174
North Dakotacheapest12.3¢$132
Ohio19.5¢$209
Oklahoma13.3¢$143
Oregon15.8¢$169
Pennsylvania21.5¢$230
Rhode Island28.3¢$303
South Carolina17.1¢$183
South Dakota14.5¢$156
Tennessee14.9¢$160
Texas17.0¢$182
Utah13.3¢$142
Vermont24.6¢$263
Virginia17.4¢$186
Washington14.4¢$154
West Virginia16.1¢$172
Wisconsin19.2¢$206
Wyoming14.7¢$157

Certified models closest in efficiency

electric water heaters within reach of 1,072 kWh/yr
ModelkWh/yr$/yr (US avg)
Friedrich PROH50 T0 FD120-M1,072$202
Friedrich PROH50 T0 FD120-MSO1,072$202
Rheem PROPH50 T0 RH120-M1,072$202
Rheem PROPH50 T0 RH120-MSO1,072$202
Rheem XE50T10HM00U01,072$202
Rheem XE50T10HMS00U01,072$202

Run your own numbers

Your rate, your numbers

Per day
55¢
Per month
$16.82
Per year
$202

1,072 kWh/yr × 18.8¢/kWh = $202/yr

Prefilled with this model's certified 1,072 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-HP120MS use?
ENERGY STAR certifies the Richmond 10E50-HP120MS at 1,072 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-HP120MS cost to run per month?
About $16.82 a month at the U.S. average residential rate (18.8¢/kWh) — 55¢ a day, or $202 a year. Your state's rate moves this up or down; see the table above.
Is the Richmond 10E50-HP120MS energy efficient?
It uses 1% less electricity than the median certified electric water heater.
What does the Richmond 10E50-HP120MS cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $132 a year in North Dakota (12.3¢/kWh) and $500 in Hawaii (46.6¢/kWh).

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