Energy & Efficiency
The True Cost of Electricity in Mining: Calculating Your…
The True Cost of Electricity in Mining: Calculating Your Break-Even Point
Electricity often decides whether a mining setup turns a profit or drains cash each month. The break-even point shows exactly how many coins you need to mine before power costs wipe out revenue. Run the numbers on your actual rate and hardware before you plug anything in.
Pinpointing Your Real Electricity Load
Start with the equipment itself. An S19 draws about 3.25 kW at the wall once you factor in PSU losses and fans. Measure with a kill-a-watt meter on-site rather than trusting the spec sheet. Add the router, switches, and any exhaust fans that run 24 hours.
Your local rate matters more than the national average. Industrial users in Texas often pay 6 cents per kWh during off-peak, while parts of California hit 28 cents. Check your last bill for the all-in rate that includes demand charges and taxes. Multiply that rate by total kW and hours to get monthly power cost.
| Component | Power Draw | Monthly kWh (730 hrs) |
|---|---|---|
| Single S19 miner | 3.25 kW | 2,373 |
| Network gear + fans | 0.4 kW | 292 |
| Total per rig | 3.65 kW | 2,665 |
Calculating Break-Even Hashrate
Take your monthly power cost and divide by the coin price to find how many coins you must mine just to cover electricity. Then divide that coin amount by the expected daily output per TH/s. The result tells you the minimum hashrate your rig needs to stay above water.
Try this example with Bitcoin at $62,000 and a 6-cent power rate. Your single S19 costs roughly $160 per month to run. At current difficulty that machine produces about 0.00028 BTC monthly, worth $17.36. You lose money until either the coin price rises or you add more machines to spread fixed costs.
- Record your measured kW draw and multiply by 730 hours.
- Multiply total kWh by your actual cent-per-kWh rate.
- Divide monthly power cost by current coin price to get break-even coins.
- Divide that coin number by output per TH/s from a mining calculator.
- Compare the result to your actual deployed hashrate.
If your rig sits below that threshold, either negotiate a lower rate, move to a cheaper power region, or shut down until conditions improve. Many operators learned this the hard way in 2022 when power bills stayed fixed while revenue dropped 70 percent.
