Daily Results at $0.07/kWh
Based on Bitcoin price: $64,000 — Network hashrate — Live data from our API
Profitability Analysis
As a dedicated ASIC, the Bitmain Antminer S21 Pro is permanently optimised for SHA-256 — the algorithm used by Bitcoin and Bitcoin Cash. It cannot be repurposed for other algorithms, so its long-term viability is directly tied to the economics of those specific coins.
At 3,510 watts and an average electricity consumption of 2,527 kWh per month, electricity cost is the single largest variable in profitability. The difference between $0.04/kWh and $0.12/kWh amounts to $202.18 per month in operating margins — which is why electricity rate selection is as important as hardware selection for any serious mining operation.
Profitability at Key Electricity Rates
All figures assume constant Bitcoin price ($64,000.00) and current network difficulty. Actual results will vary as both change over time.
| Electricity Rate | Daily Revenue | Daily Elec. Cost | Daily Profit | Monthly Profit | Status |
|---|---|---|---|---|---|
| $0.04/kWh | $7.84 | $3.37 | $4.47 | $134.00 | Marginal |
| $0.06/kWh | $7.84 | $5.05 | $2.78 | $83.46 | Marginal |
| $0.08/kWh | $7.84 | $6.74 | $1.10 | $32.91 | Marginal |
| $0.10/kWh | $7.84 | $8.42 | $-0.5877 | $-17.63 | Break-Even |
| $0.12/kWh | $7.84 | $10.11 | $-2.27 | $-68.18 | Break-Even |
Bitmain Antminer S21 Pro — Key Specifications
| Manufacturer | Bitmain |
| Category | ASIC |
| Algorithm | SHA-256 |
| Hashrate | 234 TH/s |
| Power Draw | 3,510 W |
| Efficiency | 15 J/TH |
| Noise | 75 dB(A) |
| Approx. Price | $4,500 |
| Supported Coins | BTC, BCH |
| Release | 2024-Q1 |
→ Full Bitmain Antminer S21 Pro review, pros & cons, and buying guide
How to Mine Bitcoin with the Bitmain Antminer S21 Pro
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Acquire and receive the Bitmain Antminer S21 Pro
Purchase the Bitmain Antminer S21 Pro from an authorised reseller or reputable secondary market. Budget approximately $4,500. Verify the unit is complete and inspect for physical damage before powering on. The unit ships ready to mine — no assembly required beyond power and network connections.
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Connect power and network
Connect the Bitmain Antminer S21 Pro to a dedicated 3510W power supply on a 16 A+ circuit at 220–240 V. Connect an Ethernet cable to your router. Power on the unit and wait 2–3 minutes for it to boot.
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Configure your Bitcoin mining pool
Access the miner's web interface by entering its IP address in your browser (find it via your router's DHCP lease list). Navigate to Miner Configuration and enter your chosen pool stratum URL, your Bitcoin wallet address as the worker username, and 'x' as the password. Recommended pools: Foundry USA, F2Pool, AntPool.
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Monitor performance and optimise
After starting, confirm your hashrate matches the expected 234 TH/s in the pool dashboard (allow 10–15 minutes for the pool to register your worker). Use our live Bitcoin calculator to track daily earnings against your electricity cost. Consider enabling auto-tune mode or third-party firmware (BOS+ for Antminer units) to improve efficiency 5–10%.
Recommended Bitcoin Mining Pools
stratum+tcp://bitcoin.foundryusapool.com:3333
0% FPPS
stratum+tcp://btc.f2pool.com:3333
2.5% FPPS
stratum+tcp://stratum.antpool.com:3333
2.5% FPPS
Bitmain Antminer S21 Pro vs. Other Bitcoin Miners
Sorted by efficiency. Daily profit calculated at $0.07/kWh.
| Hardware | Hashrate | Power | Efficiency | Daily Profit | Approx. Price |
|---|---|---|---|---|---|
| Bitmain Antminer S21 XP Hyd | 473 TH/s | 5,676 W | 12 J/TH | $6.30 | $12,000 |
| MicroBT Whatsminer M66S | 298 TH/s | 3,441 W | 11.5 J/TH | $4.20 | $5,800 |
| Bitmain Antminer S21 XP | 270 TH/s | 3,245 W | 12 J/TH | $3.59 | $6,500 |
|
This page Bitmain Antminer S21 Pro |
234 TH/s | 3,510 W | 15 J/TH | $1.94 | $4,500 |
| Bitmain Antminer S21 | 200 TH/s | 3,500 W | 17.5 J/TH | $0.8177 | $3,200 |
| MicroBT Whatsminer M60S | 186 TH/s | 3,441 W | 18.5 J/TH | $0.4480 | $2,800 |
| Canaan Avalon A1566 | 185 TH/s | 3,430 W | 18.5 J/TH | $0.4329 | $2,500 |
| Bitmain Antminer S19k Pro | 120 TH/s | 2,760 W | 23 J/TH | $-0.6182 | $1,400 |
Run the Live Bitcoin Calculator
This simulation uses cached data updated every 10 minutes. The interactive calculator lets you adjust hashrate, electricity cost, and pool fee in real time.
Open Bitcoin Mining Calculator