Compare Electric Range Efficiency Grades by the Wh/kg Column

What numbers does the list show?

As of October 17, 2026, the electric range list in the agency's efficiency grade product search had 3,350 entries. The list columns are maker, model, unit energy consumption (Wh/kg), energy consumption (Wh), efficiency grade, and completion date. Clicking a model opens a detail page that adds annual energy consumption (kWh), classification, annual energy cost (KRW), and CO2 emissions per hour of use.

The classification field separates induction from radiant (highlight) cooktops. Both types share the same electric range list, so matching the classification on the detail page first makes comparison less confusing.

Why can a grade 1 model use more electricity per year?

Because the grade and the annual figure are different numbers. The five models below were copied from the agency detail pages on the same day.

Values from the Korea Energy Agency efficiency grade product search, checked October 17, 2026.

The lower the Wh/kg, the lower the grade number. Energy consumption, on the other hand, ranges from 322Wh to 1,203Wh and does not follow the grade order. The grade 5 SHL-H2200B1 lists 310.8kWh a year, less than the grade 1 ERI-6353AF at 1,126kWh. The list and detail pages do not explain why energy consumption differs this much. Check product specs such as the number of zones and size in the maker's materials.

How should I read Wh/kg?

Read it literally as watt-hours per kilogram. Because it is a ratio, it lets products of different sizes be compared on efficiency. What was heated, how many kilograms were used, and where the grade boundaries sit are not shown on the list pages checked here, so this article does not give boundary numbers.

Keep the two kinds of numbers apart. Use Wh/kg and the grade to compare efficiency, and use energy consumption and annual energy consumption to gauge how much electricity your household would draw. Ranking a one-zone and a three-zone product by annual energy alone compares size, not efficiency.

Can I trust the annual energy cost field?

Use it only to compare within the same list. The CIP-30KS detail page shows an estimated annual energy cost, but the same page does not show calculation conditions such as hours of use or the rate. Cooking frequency and zone use differ by household, so do not carry it over as a bill estimate.

The top of the agency list notes that grades and efficiency can differ by manufacturing date because of measurement changes and stricter standards. It also notes that, for business reasons, a lower efficiency than the reported value may appear on the actual label. If a store product's label differs from the list for the same model name, check the manufacturing date on the label.

What should I match first when reading a label in the store?

1. Search the agency list with the full model name from the label. Models with similar names can have different values.
2. Write down the classification (induction or radiant) and unit energy consumption (Wh/kg) from the detail page side by side for each candidate.
3. Compare grades among candidates with the number of zones and size you actually need.

The basic layout of the energy label is covered in how to read the efficiency grade label. Once you are down to two or three candidates, open each detail page by model name and copy the Wh/kg value first.