Enter Antminer S9 Power Data
Example Data Table
| Scenario | Miners | Watts Each | Tariff | Cooling | Monthly kWh | Use Case |
|---|---|---|---|---|---|---|
| Home test | 1 | 1323 W | 0.12 | 5% | About 1,050 | Single unit estimate |
| Small rack | 4 | 1350 W | 0.10 | 12% | About 4,536 | Garage or small room |
| Hosted group | 20 | 1300 W | 0.075 | 18% | About 22,100 | Commercial comparison |
Formula Used
Miner input watts: Miners × watts per miner
Wall watts from miner: Board watts ÷ PSU efficiency, when board power is selected
Total watts: (wall miner watts + extra watts) × (1 + cooling overhead ÷ 100)
Daily energy: total watts ÷ 1000 × operating hours × uptime ÷ 100
Monthly cost: monthly kWh × tariff + peak kW × demand charge + fixed fees + maintenance
Monthly profit: net revenue after pool fee − monthly operating cost
How to Use This Calculator
- Enter the number of Antminer S9 units in operation.
- Select wall power if your watt value comes from a wall meter.
- Select board power if your watt value excludes supply loss.
- Enter your electricity tariff, uptime, cooling overhead, and fees.
- Add expected revenue if you want profit and payback estimates.
- Press the calculate button and review the result above the form.
- Use the CSV or PDF button to save the output.
Understanding Antminer S9 Energy Cost
An Antminer S9 is a steady electrical load. It works almost like a small heater. Every watt drawn becomes heat inside the room. That heat must leave through airflow or cooling equipment. Because of this, the real power bill can exceed the miner nameplate value. A strong calculator must include uptime, tariff, cooling, and supply losses.
Why Physics Controls the Bill
Power is the rate of energy transfer. The unit is the watt. Electric companies usually bill energy in kilowatt hours. One kilowatt running for one hour uses one kilowatt hour. A miner rated near 1320 watts uses about 1.32 kWh each hour at full load. If it runs all day, daily energy becomes large. Small rate changes then matter a lot.
Important Cost Drivers
The first driver is miner count. Two units use about twice the energy. The second driver is wall power. Firmware, chip quality, fan speed, and temperature can change this value. The third driver is operating time. A unit that runs for 95 percent uptime uses less energy than a unit running nonstop. The fourth driver is cooling overhead. Hot rooms can require exhaust fans or air conditioning. That extra load belongs in the mining cost.
Advanced Inputs Improve Accuracy
This calculator lets you select wall power or board power. Wall power already includes supply losses. Board power should be corrected by supply efficiency. The cooling percentage adds heat removal energy. Extra watts can cover routers, switches, fans, or monitoring devices. Demand charges and fixed monthly fees help users model commercial bills. Revenue and pool fee fields help compare cost against expected mining income.
Reading the Results
Daily cost shows the immediate burn rate. Monthly cost shows the normal billing impact. Yearly cost helps plan long term operation. Cost per terahash shows how expensive each unit of hash capacity becomes. The break even tariff estimates the highest energy price supported by the entered revenue. A negative profit means the miner loses money before hardware wear.
Practical Mining Notes
Measure actual wall draw with a reliable meter when possible. Use safe circuits and rated wiring. Do not overload outlets or extension cords. Keep dust away from heat sinks and fans. Vent hot air outside the room when practical. Recheck the calculation after changing firmware or fan settings. A careful energy model protects capital and reduces surprise bills.
Using Measurements Wisely
Default values are only starting points. The Antminer S9 can draw different power after tuning. Underclocking may lower watts and heat. Overclocking may raise cost faster than revenue. Ambient temperature also changes fan speed. A warm intake can reduce stability. Record power during normal operation. Then enter the measured value here. This makes the estimate more useful. It also helps compare locations, tariffs, and cooling methods before moving equipment. Document each change, because small tuning shifts can compound over billing cycles.
FAQs
1. What wattage should I enter for an Antminer S9?
Use the measured wall wattage when possible. Many S9 units run near 1320 to 1375 watts, but firmware, chip condition, fan speed, and voltage can change the value.
2. Should I choose wall power or board power?
Choose wall power if your value comes from a plug meter. Choose board power if the value excludes power supply losses. The calculator then adjusts by PSU efficiency.
3. Why does cooling overhead matter?
All electrical power becomes heat. Exhaust fans or air conditioning can add real energy use. Cooling overhead estimates that extra load and gives a more complete bill.
4. What is a demand charge?
A demand charge is a fee based on peak kilowatt draw. Some commercial bills include it. Home users often set this field to zero.
5. How is monthly energy calculated?
The calculator converts total watts to kilowatts. It multiplies by daily operating hours, uptime percentage, and billing days to estimate monthly kilowatt hours.
6. Can this calculator estimate profit?
Yes. Enter expected revenue per miner per day and pool fee percentage. The result subtracts operating cost from net mining revenue.
7. What does cost per TH mean?
It means daily operating cost divided by total terahash capacity. It helps compare different tuning profiles or miner groups on a performance basis.
8. Why is my break-even tariff negative?
A negative break-even tariff usually means entered revenue cannot cover fixed fees, demand charges, maintenance, and energy. The setup is not profitable under those assumptions.
9. Does uptime reduce both cost and revenue?
Yes. Lower uptime reduces operating hours, energy use, and entered revenue. This keeps cost and income estimates aligned with actual runtime.
10. Should hardware cost be included?
Include hardware cost if you want payback months. Leave it at zero when you only need electricity cost and operating expense.
11. Can I use this for other ASIC miners?
Yes. Replace watts, hashrate, and fees with values for another miner. The physics and energy formulas remain the same.