Onyx Computers: energy use and running cost
The average model uses 24 kWh a year, which costs $5 a year at 21.0¢/kWh.
Most efficient models
| Model | kWh/year | Cost/year |
|---|---|---|
| Onyx VENUS-224P-P225U-G1-3200 | 70 | $15 |
| Onyx VENUS-244P-P225U-G1-3200 | 73 | $15 |
- 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