Lenovo 21Y6: $2 a year to run
This model (Computers) uses 11 kWh of electricity a year, which costs about $2 a year and $22 over 10 years at 21.0¢/kWh.
Energy use
11 kWh
per year
Running cost per year
$2
21.0¢/kWh
Running cost over 10 years
$22
Efficiency rank
334 / 1,748
Product details
| Type | Notebook |
|---|---|
| Battery capacity (Wh) | 64.0 |
| Available since | April 17, 2026 |
Compared with the average model (Computers), this one saves about $3 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| HP 1) 14c-ce | 11 | $2 |
| HP HSN-I62C-3 | 11 | $2 |
| Lenovo Yoga Slim 7 Ultra 14IPH11 | 11 | $2 |
| Lenovo ThinkBook 14 G9 IPL | 11 | $2 |
| Lenovo 82W4 | 11 | $2 |
| Lenovo IdeaPad Slim 3 15IAH8 | 11 | $2 |
| Lenovo IdeaPad 1 14IJL7 | 11 | $2 |
| Acer CB515-2H | 11 | $2 |
- 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