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Bitmain Antminer S21 Pro (245 TH/s)
In stock · $2,156 per unit · Bitmain · Air-cooled · SHA-256
The Bitmain Antminer S21 Pro (245 TH/s) is a air-cooled SHA-256 bitcoin ASIC miner from Bitmain released in Mar 2024. It hashes at 245 TH/s while drawing 3,675 W, an efficiency of 15 J/TH. It is in stock at $2,156 per unit, delivered and hosted at one of our sites.
Bitmain Antminer S21 Pro profitability
As of Sep 17, 2026, hosted in Argentina at 6.0¢/kWh with 98.7% uptime. Bitcoin $77,356.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000120 BTC | $9.28 | $5.48 | $3.80 |
| Weekly | 0.000840 BTC | $64.97 | $38.39 | $26.58 |
| Monthly | 0.003650 BTC | $282.35 | $166.83 | $115.52 |
| Yearly | 0.043796 BTC | $3,387.89 | $2,001.79 | $1,386.09 |
Electricity per bitcoin mined: $45,707. Year 1 return: 33%.
Bitmain Antminer S21 Pro price history
From $3,396 in Nov 2025 to $2,156 in Sep 2026 (-37%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Nov 2025 | $3,234 | $13.20 |
| Dec 2025 | $3,234 | $13.20 |
| Jan 2026 | $3,261 | $13.31 |
| Mar 2026 | $2,426 | $9.90 |
| Apr 2026 | $2,345 | $9.57 |
| May 2026 | $2,291 | $9.35 |
| Jun 2026 | $2,102 | $8.58 |
| Jul 2026 | $2,156 | $8.80 |
| Aug 2026 | $2,156 | $8.80 |
| Sep 2026 | $2,156 | $8.80 |
Where to host the Bitmain Antminer S21 Pro
| Site | Cooling | Rate | Uptime | Cost per BTC | Profit per month | All-in per unit | Year 1 return |
|---|---|---|---|---|---|---|---|
| UAE | Immersion | 6.0¢ | 99.3% | $45,707 | $116 | $4,409 | 32% |
| Nigeria | Air-cooled | 4.0¢ | 74.7% | $30,471 | $130 | $4,335 | 36% |
| Argentina | Air-cooled | 6.0¢ | 98.7% | $45,707 | $116 | $4,198 | 33% |
Bitmain Antminer S21 Pro specifications
| Specification | Value |
|---|---|
| Manufacturer | Bitmain |
| Model | Bitmain Antminer S21 Pro |
| Release date | Mar 2024 |
| Algorithm | SHA-256 |
| Hashrate | 245 TH/s |
| Power consumption | 3675 W |
| Efficiency | 15 J/TH |
| Cooling | Air-cooled |
| Dimensions | 400 x 195 x 290 mm (approx.) |
| Weight | 16 kg (approx.) |
Bitmain Antminer S21 Pro FAQ
How much does the Bitmain Antminer S21 Pro cost?
The Bitmain Antminer S21 Pro (245 TH/s) costs $2,156 per unit ($8.80 per TH/s). Delivered, imported, installed and hosted in Argentina with a two-month hosting deposit, the all-in cost is about $4,198 per machine.
Is the Bitmain Antminer S21 Pro (245 TH/s) profitable?
As of Sep 17, 2026, hosted in Argentina at 6.0¢/kWh, the Bitmain Antminer S21 Pro (245 TH/s) is calculated to generate $3.80 daily, $115.52 monthly and $1,386.09 yearly after electricity, at a bitcoin price of $77,356. It always changes with bitcoin's price and network difficulty.
What does it cost to mine one bitcoin with the Bitmain Antminer S21 Pro?
Electricity to mine one bitcoin with the Bitmain Antminer S21 Pro costs about $45,707 in Argentina, and $45,707 in UAE and $30,471 in Nigeria. Bitcoin trades at $77,356, so every coin it mines is made 41% below the price of buying one.
What is the year 1 return of the Bitmain Antminer S21 Pro?
At current bitcoin price and difficulty, the Bitmain Antminer S21 Pro returns 32–36% in its first year at our sites, after electricity, against everything paid up front: the machine, shipping, import, infrastructure, setup and hosting deposit. You keep the machine and every bitcoin it mines. It always changes.
What is the hashrate and power consumption of the Bitmain Antminer S21 Pro?
The Bitmain Antminer S21 Pro produces 245 TH/s of SHA-256 hashrate and consumes 3,675 W, giving an efficiency of 15 J/TH.
What are the dimensions and weight of the Bitmain Antminer S21 Pro?
The Bitmain Antminer S21 Pro measures about 400 x 195 x 290 mm and weighs around 16 kg.
Is the Bitmain Antminer S21 Pro air-cooled or hydro-cooled?
The Bitmain Antminer S21 Pro is air-cooled with fans. In the UAE we run air-cooled machines in immersion tanks instead, which keeps them cool in desert heat.
Where can the Bitmain Antminer S21 Pro be hosted?
We can host the Bitmain Antminer S21 Pro in UAE (6.0¢/kWh, 99.3% uptime, immersion), Nigeria (4.0¢/kWh, 74.7% uptime) and Argentina (6.0¢/kWh, 98.7% uptime). The bitcoin it mines goes straight to your own wallet.
How has the price of the Bitmain Antminer S21 Pro changed?
The Bitmain Antminer S21 Pro sold for $3,396 in Nov 2025 and $2,156 as of Sep 2026, down 37%. Over that time it ranged from $2,021 to $3,396.
When was the Bitmain Antminer S21 Pro released?
Bitmain announced the Bitmain Antminer S21 Pro in Mar 2024.