CIARA KRONOS 540-G2: $7 a year to run
This model (Computers) uses 32 kWh of electricity a year, which costs about $7 a year and $66 over 10 years at 21.0¢/kWh.
Energy use
32 kWh
per year
Running cost per year
$7
21.0¢/kWh
Running cost over 10 years
$66
Efficiency rank
1,390 / 1,748
Product details
| Type | Workstation |
|---|---|
| Available since | March 25, 2026 |
Compared with the average model (Computers), this one costs about $2 more a year.
More efficient alternatives
| Model | kWh/year | Cost/year |
|---|---|---|
| Lenovo 30HT | 30 | $6 |
| Apple A2786 / A2787 | 28 | $6 |
| HP FCW-F002SF-550 | 25 | $5 |
| Lenovo 30JQ | 25 | $5 |
| Lenovo 30GR | 23 | $5 |
| Lenovo 30J5 | 22 | $5 |
| Lenovo 30FR | 21 | $4 |
| Lenovo 30HA | 21 | $4 |
- 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