How much does a 1200 W workstation cost to run? Rendering and ML power guide

How this is calculated

Unlike a gaming PC, a workstation often runs at high utilization for the entire workday, a render, training run, or simulation routinely pulls 900-1100 W from the wall for hours. That's why we use 80% utilization across 8 hours here rather than the lower fractions that fit a gamer's evening schedule. Cooling costs add to this too: a 1200 W draw into a small room raises ambient temperature noticeably, and climate-controlled setups add 10-20% to effective electricity use.

Verdict

The arithmetic: 1200 W at 80% utilization for 8 hours daily at $0.18/kWh consumes 2803 kWh annually and costs $504.58 ($42 monthly). Unlike a gaming PC, a workstation is built to actually sustain high utilization across the workday (a render, training run, or simulation holds 900-1100 W from the wall for hours), which is why the 80%-for-8-hours assumption is honest rather than conservative. Cooling is the multiplier: 1200 W of heat into a small room raises ambient temperature noticeably, and a climate-controlled setup adds 10-20% to the effective electricity bill. That's where performance per watt starts mattering at this scale: an M-series Mac or efficient Zen build can deliver comparable throughput at half the energy cost, and the savings compound into real operating expense over a 3-5 year deployment.