Lenovo 21UE: $4 a year to run
This model (Computers) uses 21 kWh of electricity a year, which costs about $4 a year and $44 over 10 years at 21.0¢/kWh.
Energy use
21 kWh
per year
Running cost per year
$4
21.0¢/kWh
Running cost over 10 years
$44
Efficiency rank
1,259 / 1,748
Product details
| Type | Notebook |
|---|---|
| Battery capacity (Wh) | 90.0 |
| Available since | June 17, 2026 |
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| COMPUMAX 2051-800-0001 | 21 | $4 |
| Acer TMP216-41 | 21 | $4 |
| Lenovo ThinkBook 16 G8 IRL | 21 | $4 |
| ASUS FA608UMI | 21 | $4 |
| ASUS FA401 | 21 | $4 |
| Lenovo Legion 7 16AGP11 | 21 | $4 |
| Lenovo 21QT | 21 | $4 |
| Lenovo 1) ThinkBook 14 G6 IRL | 20 | $4 |
- Refrigerators
- Freezers
- Washing machines
- Dishwashers
- Tumble dryers
- Room air conditioners
- Dehumidifiers
- Water heaters
- Electric cooktops and ranges
- Televisions
- Air purifiers
Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology