WattCost

Data through June 2026

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

Smart Solar SSG2-ES 120

Heating a typical household's hot water, the Smart Solar SSG2-ES 120 is certified at 1,741 kWh a year — about $319 at the U.S. average electricity rate, or $26.61 a month. Even among certified models it's on the thirsty end: 44% more electricity than the median electric water heater, ranked 510 of 510. The same unit costs $228 a year in Nevada but $918 in Hawaii — electricity rates, not the appliance, make the difference.

Dimensions 64" H × 28" W

Estimated annual running cost · U.S. average rate 18.3¢/kWh

$319/yr

$125 · cheapest certified water heaters (electric)$319 · priciest
Per month
$26.61
Per day
87¢
Certified use
1,741 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
Split System HPWH
Storage volume
120 gal
First-hour rating
83 gal
UEF
2.85
681 kWh1,741 kWh
Where the Smart Solar SSG2-ES 120 (▮) sits among all 510 certified water heaters (electric), by annual kWh

What it costs in every state

Smart Solar SSG2-ES 120: 1,741 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$286
Alaska28.2¢$491
Arizona15.2¢$264
Arkansas14.1¢$246
California34.7¢$605
Colorado17.1¢$298
Connecticut24.3¢$423
Delaware19.3¢$336
District of Columbia24.4¢$425
Florida15.1¢$263
Georgia16.4¢$285
Hawaiipriciest52.7¢$918
Idaho14.4¢$250
Illinois19.9¢$346
Indiana17.5¢$305
Iowa15.9¢$277
Kansas15.7¢$274
Kentucky14.3¢$248
Louisiana13.5¢$235
Maine29.6¢$515
Maryland21.8¢$380
Massachusetts29.6¢$516
Michigan23.0¢$400
Minnesota17.5¢$305
Mississippi14.9¢$259
Missouri16.2¢$282
Montana15.1¢$264
Nebraska13.3¢$231
Nevadacheapest13.1¢$228
New Hampshire27.0¢$470
New Jersey24.9¢$434
New Mexico15.1¢$262
New York29.5¢$513
North Carolina14.7¢$257
North Dakota14.1¢$246
Ohio19.2¢$334
Oklahoma14.3¢$249
Oregon16.3¢$284
Pennsylvania21.7¢$378
Rhode Island29.2¢$509
South Carolina15.6¢$271
South Dakota15.4¢$267
Tennessee14.1¢$245
Texas15.9¢$278
Utah13.4¢$233
Vermont24.4¢$426
Virginia17.2¢$300
Washington14.9¢$260
West Virginia15.4¢$269
Wisconsin19.6¢$341
Wyoming15.2¢$265

Certified models closest in efficiency

electric water heaters within reach of 1,741 kWh/yr
ModelkWh/yr$/yr (US avg)
A. O. Smith HPTV-80 21,654$303
A. O. Smith HPV10-80H01DV 21,654$303
American HPV10280H009DV 21,654$303
Lochinvar HPV080KD 21,654$303
RELIANCE WATER HEATERS 10-80-DHPTV 21,654$303
State HPVX-80-DHPT 21,654$303

Run your own numbers

Your rate, your numbers

Per day
87¢
Per month
$26.61
Per year
$319

1,741 kWh/yr × 18.3¢/kWh = $319/yr

Prefilled with this model's certified 1,741 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 Smart Solar SSG2-ES 120 use?
ENERGY STAR certifies the Smart Solar SSG2-ES 120 at 1,741 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 Smart Solar SSG2-ES 120 cost to run per month?
About $26.61 a month at the U.S. average residential rate (18.3¢/kWh) — 87¢ a day, or $319 a year. Your state's rate moves this up or down; see the table above.
Is the Smart Solar SSG2-ES 120 energy efficient?
It uses 44% more electricity than the median certified electric water heater, which puts it among the least efficient certified models.
What does the Smart Solar SSG2-ES 120 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $228 a year in Nevada (13.1¢/kWh) and $918 in Hawaii (52.7¢/kWh).

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