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Bitmain Antminer S21 Immersion (239 TH/s)
In stock · $3,298 all-in, delivered, installed and hosted in UAE · 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 runs at 239 TH/s while drawing 4,422 W, an efficiency of 18.5 J/TH. It is in stock (ships in 10 days), delivered and hosted at one of our sites.
More on this machine: Bitmain Antminer S21 Immersion price history · Bitmain Antminer S21 Immersion profitability history · At 18.5 J/TH, the Antminer S21 Immersion is the machine the 2028 halving will test
Part of the Bitmain Antminer S21 line: Bitmain Antminer S21 price, hosting and profitability
Bitmain Antminer S21 Immersion profitability
As of Nov 1, 2026, hosted in UAE at 6.5¢/kWh with 99.3% uptime. Bitcoin $77,951.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000101 BTC | $7.91 | $7.19 | $0.71 |
| Weekly | 0.000710 BTC | $55.35 | $50.35 | $5.00 |
| Monthly | 0.003086 BTC | $240.52 | $218.80 | $21.73 |
| Yearly | 0.037023 BTC | $2,885.97 | $2,625.27 | $260.69 |
Electricity per bitcoin mined: $70,910. Year 1 return: 8%.
Bitmain Antminer S21 Immersion price history
From $4,388 in Jul 2024 to $1,531 in Sep 2026 (-65%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Jul 2024 | $4,257 | $17.81 |
| Aug 2024 | $4,209 | $17.61 |
| Sep 2024 | $4,362 | $18.25 |
| Oct 2024 | $4,240 | $17.74 |
| Nov 2024 | $4,276 | $17.89 |
| Dec 2024 | $4,111 | $17.20 |
| Jan 2025 | $3,879 | $16.23 |
| Feb 2025 | $3,955 | $16.55 |
| Mar 2025 | $4,132 | $17.29 |
| Jun 2026 | $1,634 | $6.84 |
| Jul 2026 | $1,634 | $6.84 |
| Aug 2026 | $1,556 | $6.51 |
| Sep 2026 | $1,531 | $6.41 |
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 | 6.5¢ | 99.3% | $70,910 | $22 | $3,298 | 8% |
| Nigeria | Not offered | 4.5¢ | 73.6% | — | — | — | — |
| Argentina | Not offered | 6.5¢ | 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 all-in price of the Bitmain Antminer S21 Immersion (239 TH/s) is about $3,298 per machine, delivered, imported, installed and hosted in UAE with a two-month hosting deposit. That is the machine itself at $1,531 ($6.41 per TH/s, the Hong Kong price) plus shipping, infrastructure, import duty, customs, setup and the deposit.
Is the Bitmain Antminer S21 Immersion (239 TH/s) profitable?
As of Nov 1, 2026, hosted in UAE at 6.5¢/kWh, the Bitmain Antminer S21 Immersion (239 TH/s) is calculated to generate $0.71 daily, $21.73 monthly and $260.69 yearly after electricity, at a bitcoin price of $77,951. 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 $70,910 in UAE. Bitcoin trades at $77,951, so every coin it mines is made 9% 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 8% 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 (6.5¢/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 $4,388 in Jul 2024 and $1,531 as of Sep 2026, down 65%. Over that time it ranged from $1,531 to $4,388.
When was the Bitmain Antminer S21 Immersion released?
Bitmain announced the Bitmain Antminer S21 Immersion in Jul 2024.