Lenovo 21RQ: $7 a year to run
This model (Computers) uses 33 kWh of electricity a year, which costs about $7 a year and $70 over 10 years at 21.0¢/kWh.
Energy use
33 kWh
per year
Running cost per year
$7
21.0¢/kWh
Running cost over 10 years
$70
Efficiency rank
1,405 / 1,748
Product details
| Type | Notebook |
|---|---|
| Battery capacity (Wh) | 99.0 |
| Available since | September 30, 2025 |
Compared with the average model (Computers), this one costs about $2 more a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Lenovo LOQ 15IRH11E | 33 | $7 |
| ASUS H7607B | 32 | $7 |
| Ace Computers MR-17AHMB | 30 | $6 |
| HP HSN-I64C-6 | 28 | $6 |
| Lenovo ThinkBook 16p G6 AFR | 28 | $6 |
| HP HSTNS-I001 | 28 | $6 |
| Lenovo 21KV | 26 | $6 |
| Lenovo 21RS | 26 | $6 |
- 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