Power costing · reviewed 21 July 2026
How much electricity does a 3D print cost?
Convert average watts into kilowatt-hours, then multiply by the tariff you actually pay. Printer wattage alone is not an energy bill.
The calculation
energy (kWh) = average watts ÷ 1,000 × print hourselectricity cost = energy (kWh) × tariff per kWhAt the calculator’s illustrative defaults, 110 W for 5.5 hours uses 0.605 kWh. At USD 0.18/kWh, the electricity cost is about USD 0.11. These are assumptions, not a measured printer profile or a universal tariff.
Worked electricity-cost scenarios
| Measured average | Job time | Tariff | Energy | Cost |
|---|---|---|---|---|
| 80 W | 2 hours | USD 0.18/kWh | 0.16 kWh | USD 0.03 |
| 110 W | 5.5 hours | USD 0.18/kWh | 0.605 kWh | USD 0.11 |
| 180 W | 12 hours | USD 0.30/kWh | 2.16 kWh | USD 0.65 |
These scenarios show why duration and local tariff matter as much as watts. They are arithmetic examples, not measured profiles for named printers.
Measure a repeatable job average
- Reset a suitable wall-power meter before the job.
- Run a representative print, including warm-up and normal bed cycling.
- Record total kWh and elapsed hours at completion.
- Divide kWh by hours and multiply by 1,000 to recover average watts.
- Save the measured average as a quoting assumption and remeasure when the printer, enclosure, bed temperature or workflow changes.
Use average draw, not the label’s maximum
Power changes while heaters warm up, the bed cycles and motors move. The most useful estimate comes from a wall-power meter across representative complete jobs. Record both kWh and elapsed hours, then calculate average watts if needed.
What else uses power?
| Equipment | When to include it | Allocation method |
|---|---|---|
| Printer | Every job | Measured job kWh |
| Resin wash/cure | Resin post-processing | Measured cycle kWh divided by units |
| Dryer | Material conditioning for the job or batch | Cycle kWh divided by material/jobs |
| Ventilation | When operated for production | Measured runtime allocation |
| Computer/lighting | If materially incremental | Production-time allocation |
Do not optimize the smallest cost first
Electricity can be smaller than labour, failed prints, marketplace fees or shipping. Measure it, include it, then prioritize the cost that actually changes profit. A USD 0.10 power saving does little if poor preparation causes a USD 10 failed job.
Disclosure: examples are arithmetic illustrations. Tariffs, taxes and power profiles differ by location, printer and job. Use a suitable meter and follow its manufacturer instructions.