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Bitmain Antminer S21 Immersion (239 TH/s)
In stock · $1,577 per unit · Bitmain · Immersion · SHA-256
The Bitmain Antminer S21 Immersion (239 TH/s) is a immersion-cooled SHA-256 bitcoin ASIC miner from Bitmain released in Jul 2024. It hashes at 239 TH/s while drawing 4,422 W, an efficiency of 18.5 J/TH. It is in stock (ships in 10 days) at $1,577 per unit, delivered and hosted at one of our sites.
Bitmain Antminer S21 Immersion profitability
As of Sep 17, 2026, hosted in UAE at 6.0¢/kWh with 99.3% uptime. Bitcoin $77,356.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000118 BTC | $9.11 | $6.64 | $2.47 |
| Weekly | 0.000824 BTC | $63.77 | $46.47 | $17.29 |
| Monthly | 0.003582 BTC | $277.11 | $201.97 | $75.15 |
| Yearly | 0.042983 BTC | $3,325.01 | $2,423.33 | $901.68 |
Electricity per bitcoin mined: $56,378. Year 1 return: 23%.
Bitmain Antminer S21 Immersion price history
From $1,604 in Jun 2026 to $1,577 in Sep 2026 (-2%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Jun 2026 | $1,630 | $6.82 |
| Jul 2026 | $1,630 | $6.82 |
| Aug 2026 | $1,577 | $6.60 |
| Sep 2026 | $1,577 | $6.60 |
Where to host the Bitmain Antminer S21 Immersion
| Site | Cooling | Rate | Uptime | Cost per BTC | Profit per month | All-in per unit | Year 1 return |
|---|---|---|---|---|---|---|---|
| UAE | Immersion | 6.0¢ | 99.3% | $56,378 | $75 | $3,840 | 23% |
| Nigeria | Not offered | 4.0¢ | 74.7% | — | — | — | — |
| Argentina | Not offered | 6.0¢ | 98.7% | — | — | — | — |
Bitmain Antminer S21 Immersion specifications
| Specification | Value |
|---|---|
| Manufacturer | Bitmain |
| Model | Bitmain Antminer S21 Immersion |
| Release date | Jul 2024 |
| Algorithm | SHA-256 |
| Hashrate | 239 TH/s |
| Power consumption | 4422 W |
| Efficiency | 18.5 J/TH |
| Cooling | Immersion |
Bitmain Antminer S21 Immersion FAQ
How much does the Bitmain Antminer S21 Immersion cost?
The Bitmain Antminer S21 Immersion (239 TH/s) costs $1,577 per unit ($6.60 per TH/s). Delivered, imported, installed and hosted in UAE with a two-month hosting deposit, the all-in cost is about $3,840 per machine.
Is the Bitmain Antminer S21 Immersion (239 TH/s) profitable?
As of Sep 17, 2026, hosted in UAE at 6.0¢/kWh, the Bitmain Antminer S21 Immersion (239 TH/s) is calculated to generate $2.47 daily, $75.15 monthly and $901.68 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 Immersion?
Electricity to mine one bitcoin with the Bitmain Antminer S21 Immersion costs about $56,378 in UAE. Bitcoin trades at $77,356, so every coin it mines is made 27% below the price of buying one.
What is the year 1 return of the Bitmain Antminer S21 Immersion?
At current bitcoin price and difficulty, the Bitmain Antminer S21 Immersion returns 23% 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 Immersion?
The Bitmain Antminer S21 Immersion produces 239 TH/s of SHA-256 hashrate and consumes 4,422 W, giving an efficiency of 18.5 J/TH.
Is the Bitmain Antminer S21 Immersion air-cooled or hydro-cooled?
The Bitmain Antminer S21 Immersion is built for immersion cooling, submerged in dielectric fluid in a tank. We run immersion tanks in the UAE.
Where can the Bitmain Antminer S21 Immersion be hosted?
We can host the Bitmain Antminer S21 Immersion in UAE (6.0¢/kWh, 99.3% uptime). The bitcoin it mines goes straight to your own wallet.
How has the price of the Bitmain Antminer S21 Immersion changed?
The Bitmain Antminer S21 Immersion sold for $1,604 in Jun 2026 and $1,577 as of Sep 2026, down 2%. Over that time it ranged from $1,577 to $1,630.
When was the Bitmain Antminer S21 Immersion released?
Bitmain announced the Bitmain Antminer S21 Immersion in Jul 2024.