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Bitmain Antminer S21+ (235 TH/s)
In stock · $1,542 per unit · Bitmain · Air-cooled · SHA-256
The Bitmain Antminer S21+ (235 TH/s) is a air-cooled SHA-256 bitcoin ASIC miner from Bitmain released in Feb 2025. It runs at 235 TH/s while drawing 3,877 W, an efficiency of 16.5 J/TH. It is in stock at $1,542 per unit, delivered and hosted at one of our sites.
More on this machine: Bitmain Antminer S21+ price history · Bitmain Antminer S21+ profitability history · Eighteen months with the Antminer S21+, and where it goes next
Bitmain Antminer S21+ profitability
As of Sep 21, 2026, hosted in Argentina at 6.0¢/kWh with 98.7% uptime. Bitcoin $87,031.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000111 BTC | $9.67 | $5.79 | $3.88 |
| Weekly | 0.000778 BTC | $67.68 | $40.50 | $27.18 |
| Monthly | 0.003379 BTC | $294.12 | $176.00 | $118.11 |
| Yearly | 0.040549 BTC | $3,529.00 | $2,111.82 | $1,417.17 |
Electricity per bitcoin mined: $52,081. Year 1 return: 44%.
Bitmain Antminer S21+ price history
From $4,191 in Jan 2025 to $1,542 in Sep 2026 (-63%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Jan 2025 | $4,215 | $17.94 |
| Feb 2025 | $3,661 | $15.58 |
| Mar 2025 | $3,445 | $14.66 |
| Apr 2025 | $3,131 | $13.33 |
| May 2025 | $3,372 | $14.35 |
| Jun 2025 | $3,131 | $13.33 |
| Jul 2025 | $3,155 | $13.43 |
| Aug 2025 | $3,107 | $13.22 |
| Sep 2025 | $3,252 | $13.84 |
| Oct 2025 | $3,204 | $13.63 |
| Nov 2025 | $2,601 | $11.07 |
| Dec 2025 | $2,457 | $10.46 |
| Jan 2026 | $2,529 | $10.76 |
| Feb 2026 | $2,216 | $9.43 |
| Mar 2026 | $1,831 | $7.79 |
| Apr 2026 | $1,614 | $6.87 |
| May 2026 | $1,662 | $7.07 |
| Jun 2026 | $1,638 | $6.97 |
| Jul 2026 | $1,542 | $6.56 |
| Aug 2026 | $1,566 | $6.66 |
| Sep 2026 | $1,542 | $6.56 |
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% | $52,081 | $119 | $3,603 | 40% |
| Nigeria | Air-cooled | 3.9¢ | 73.6% | $33,853 | $134 | $3,238 | 50% |
| Argentina | Air-cooled | 6.0¢ | 98.7% | $52,081 | $118 | $3,238 | 44% |
Bitmain Antminer S21+ specifications
| Specification | Value |
|---|---|
| Manufacturer | Bitmain |
| Model | Bitmain Antminer S21+ |
| Release date | Feb 2025 |
| Algorithm | SHA-256 |
| Hashrate | 235 TH/s |
| Power consumption | 3877 W |
| Efficiency | 16.5 J/TH |
| Cooling | Air-cooled |
| Dimensions | 400 x 195 x 290 mm (approx.) |
| Weight | 22.9 kg (approx.) |
Bitmain Antminer S21+ FAQ
How much does the Bitmain Antminer S21+ cost?
The Bitmain Antminer S21+ (235 TH/s) costs $1,542 per unit ($6.56 per TH/s). Delivered, imported, installed and hosted in Argentina with a two-month hosting deposit, the all-in cost is about $3,238 per machine.
Is the Bitmain Antminer S21+ (235 TH/s) profitable?
As of Sep 21, 2026, hosted in Argentina at 6.0¢/kWh, the Bitmain Antminer S21+ (235 TH/s) is calculated to generate $3.88 daily, $118.11 monthly and $1,417.17 yearly after electricity, at a bitcoin price of $87,031. 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 $52,081 in Argentina, and $52,081 in UAE and $33,853 in Nigeria. Bitcoin trades at $87,031, so every coin it mines is made 40% 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 40–50% 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 235 TH/s of SHA-256 hashrate and consumes 3,877 W, giving an efficiency of 16.5 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 22.9 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 (3.9¢/kWh, 73.6% 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 $4,191 in Jan 2025 and $1,542 as of Sep 2026, down 63%. Over that time it ranged from $1,397 to $4,215.
When was the Bitmain Antminer S21+ released?
Bitmain announced the Bitmain Antminer S21+ in Feb 2025.
Alternatives to the Bitmain Antminer S21+
- Bitmain Antminer S21+ (225 TH/s)
- Bitmain Antminer S21+ (216 TH/s)
- Canaan Avalon A15 Pro (221 TH/s)
- Canaan Avalon A15 Pro+ (240 TH/s)
- Bitmain Antminer S21 (151 TH/s)
- Canaan Avalon A15XP (209 TH/s)
Also sold as Bitmain Antminer S21+ (225 TH/s), Bitmain Antminer S21+ (216 TH/s).