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Bitmain Antminer S21 (151 TH/s)
In stock · $897 per unit · Bitmain · Air-cooled · SHA-256
The Bitmain Antminer S21 (151 TH/s) is a air-cooled SHA-256 bitcoin ASIC miner from Bitmain released in Aug 2023. It hashes at 151 TH/s while drawing 2,643 W, an efficiency of 17.5 J/TH. It is in stock at $897 per unit, delivered and hosted at one of our sites.
Bitmain Antminer S21 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 | 0.000074 BTC | $5.72 | $3.94 | $1.78 |
| Weekly | 0.000518 BTC | $40.04 | $27.61 | $12.43 |
| Monthly | 0.002250 BTC | $174.02 | $119.98 | $54.04 |
| Yearly | 0.026993 BTC | $2,088.04 | $1,439.66 | $648.39 |
Electricity per bitcoin mined: $53,335. Year 1 return: 27%.
Bitmain Antminer S21 price history
From $930 in Mar 2026 to $897 in Sep 2026 (-4%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Mar 2026 | $930 | $6.16 |
| Apr 2026 | $897 | $5.94 |
| May 2026 | $914 | $6.05 |
| Jun 2026 | $914 | $6.05 |
| Jul 2026 | $897 | $5.94 |
| Aug 2026 | $897 | $5.94 |
| Sep 2026 | $897 | $5.94 |
Where to host the Bitmain Antminer S21
| Site | Cooling | Rate | Uptime | Cost per BTC | Profit per month | All-in per unit | Year 1 return |
|---|---|---|---|---|---|---|---|
| UAE | Immersion | 6.0¢ | 99.3% | $53,335 | $54 | $2,929 | 22% |
| Nigeria | Air-cooled | 4.0¢ | 74.7% | $35,557 | $71 | $2,572 | 33% |
| Argentina | Air-cooled | 6.0¢ | 98.7% | $53,335 | $54 | $2,403 | 27% |
Bitmain Antminer S21 specifications
| Specification | Value |
|---|---|
| Manufacturer | Bitmain |
| Model | Bitmain Antminer S21 |
| Release date | Aug 2023 |
| Algorithm | SHA-256 |
| Hashrate | 151 TH/s |
| Power consumption | 2643 W |
| Efficiency | 17.5 J/TH |
| Cooling | Air-cooled |
| Dimensions | 400 x 195 x 290 mm (approx.) |
| Weight | 16 kg (approx.) |
Bitmain Antminer S21 FAQ
How much does the Bitmain Antminer S21 cost?
The Bitmain Antminer S21 (151 TH/s) costs $897 per unit ($5.94 per TH/s). Delivered, imported, installed and hosted in Argentina with a two-month hosting deposit, the all-in cost is about $2,403 per machine.
Is the Bitmain Antminer S21 (151 TH/s) profitable?
As of Sep 17, 2026, hosted in Argentina at 6.0¢/kWh, the Bitmain Antminer S21 (151 TH/s) is calculated to generate $1.78 daily, $54.04 monthly and $648.39 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?
Electricity to mine one bitcoin with the Bitmain Antminer S21 costs about $53,335 in Argentina, and $53,335 in UAE and $35,557 in Nigeria. Bitcoin trades at $77,356, so every coin it mines is made 31% below the price of buying one.
What is the year 1 return of the Bitmain Antminer S21?
At current bitcoin price and difficulty, the Bitmain Antminer S21 returns 22–33% 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?
The Bitmain Antminer S21 produces 151 TH/s of SHA-256 hashrate and consumes 2,643 W, giving an efficiency of 17.5 J/TH.
What are the dimensions and weight of the Bitmain Antminer S21?
The Bitmain Antminer S21 measures about 400 x 195 x 290 mm and weighs around 16 kg.
Is the Bitmain Antminer S21 air-cooled or hydro-cooled?
The Bitmain Antminer S21 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 be hosted?
We can host the Bitmain Antminer S21 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 changed?
The Bitmain Antminer S21 sold for $930 in Mar 2026 and $897 as of Sep 2026, down 4%. Over that time it ranged from $880 to $930.
When was the Bitmain Antminer S21 released?
Bitmain announced the Bitmain Antminer S21 in Aug 2023.