Panasonic CF-335******: $4 a year to run
This model (Computers) uses 20 kWh of electricity a year, which costs about $4 a year and $42 over 10 years at 21.0¢/kWh.
Energy use
20 kWh
per year
Running cost per year
$4
21.0¢/kWh
Running cost over 10 years
$42
Efficiency rank
1,225 / 1,748
Product details
| Type | Two-In-One Notebook |
|---|---|
| Battery capacity (Wh) | 49.7 |
| Available since | August 22, 2025 |
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Panasonic FZ-G2P****** | 15 | $3 |
| Panasonic CF-330****** | 14 | $3 |
| Panasonic FZ-G2M****** | 14 | $3 |
| ASUS UX8407A | 13 | $3 |
| Panasonic FZ-34D****** | 11 | $2 |
| dynabook Dynabook Chromebook C11 | 8 | $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