Casper 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 |
|---|---|---|
| Casper NIRVANA X SERiSi | 9 | $2 |
| Casper NevoPro P40 Series | 11 | $2 |
| Casper Nirvana N200 | 44 | $9 |
| Casper NIRVANA ONE 27" | 58 | $12 |
| Casper Nirvana A800/900 | 62 | $13 |
- 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