Lenovo 21ME: $5 a year to run
This model (Computers) uses 23 kWh of electricity a year, which costs about $5 a year and $49 over 10 years at 21.0¢/kWh.
Energy use
23 kWh
per year
Running cost per year
$5
21.0¢/kWh
Running cost over 10 years
$49
Efficiency rank
1,299 / 1,748
Product details
| Type | Notebook |
|---|---|
| Battery capacity (Wh) | 52.5 |
| Available since | May 17, 2025 |
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| ASUS H7407B | 23 | $5 |
| Lenovo Legion 5 15IAX10 | 23 | $5 |
| Lenovo Legion 5 15AHP11 | 23 | $5 |
| Lenovo 21L3 | 23 | $5 |
| DELL DA16250 | 23 | $5 |
| HP HSN-Q40C | 23 | $5 |
| Lenovo Legion 5 15AGP11 | 23 | $5 |
| ASUS FA607N | 22 | $5 |
- 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