Acer R857T: $2 a year to run
This model (Computers) uses 10 kWh of electricity a year, which costs about $2 a year and $22 over 10 years at 21.0¢/kWh.
Energy use
10 kWh
per year
Running cost per year
$2
21.0¢/kWh
Running cost over 10 years
$22
Efficiency rank
310 / 1,748
Product details
| Type | Notebook |
|---|---|
| Battery capacity (Wh) | 53.0 |
| Available since | October 27, 2025 |
Compared with the average model (Computers), this one saves about $3 a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Acer N26LD1 | 10 | $2 |
| Acer ROA732LTN | 10 | $2 |
| Apple A3468 | 10 | $2 |
| ASUS S5608Q | 10 | $2 |
| ASUS E1504F | 10 | $2 |
| ASUS TP3407S | 10 | $2 |
| ASUS E410KA | 10 | $2 |
| CTL PX112C-L | 10 | $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