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Bitmain Antminer S21+ (235 TH/s)
In stock · $1,654 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 hashes at 235 TH/s while drawing 3,877 W, an efficiency of 16.5 J/TH. It is in stock at $1,654 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 | 0.000115 BTC | $8.90 | $5.79 | $3.12 |
| Weekly | 0.000806 BTC | $62.32 | $40.50 | $21.82 |
| Monthly | 0.003501 BTC | $270.83 | $176.00 | $94.83 |
| Yearly | 0.042008 BTC | $3,249.61 | $2,111.82 | $1,137.78 |
Electricity per bitcoin mined: $50,271. Year 1 return: 32%.
Bitmain Antminer S21+ price history
From $3,128 in Nov 2025 to $1,654 in Sep 2026 (-47%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Nov 2025 | $2,895 | $12.32 |
| Dec 2025 | $2,637 | $11.22 |
| Jan 2026 | $2,688 | $11.44 |
| Apr 2026 | $1,732 | $7.37 |
| May 2026 | $1,732 | $7.37 |
| Jun 2026 | $1,706 | $7.26 |
| Jul 2026 | $1,629 | $6.93 |
| Aug 2026 | $1,629 | $6.93 |
| Sep 2026 | $1,654 | $7.04 |
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% | $50,271 | $95 | $3,875 | 30% |
| Nigeria | Air-cooled | 4.0¢ | 74.7% | $33,514 | $116 | $3,670 | 38% |
| Argentina | Air-cooled | 6.0¢ | 98.7% | $50,271 | $95 | $3,539 | 32% |
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 | 16 kg (approx.) |
Bitmain Antminer S21+ FAQ
How much does the Bitmain Antminer S21+ cost?
The Bitmain Antminer S21+ (235 TH/s) costs $1,654 per unit ($7.04 per TH/s). Delivered, imported, installed and hosted in Argentina with a two-month hosting deposit, the all-in cost is about $3,539 per machine.
Is the Bitmain Antminer S21+ (235 TH/s) profitable?
As of Sep 17, 2026, hosted in Argentina at 6.0¢/kWh, the Bitmain Antminer S21+ (235 TH/s) is calculated to generate $3.12 daily, $94.83 monthly and $1,137.78 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 $50,271 in Argentina, and $50,271 in UAE and $33,514 in Nigeria. Bitcoin trades at $77,356, so every coin it mines is made 35% 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 30–38% 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 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 $3,128 in Nov 2025 and $1,654 as of Sep 2026, down 47%. Over that time it ranged from $1,499 to $3,128.
When was the Bitmain Antminer S21+ released?
Bitmain announced the Bitmain Antminer S21+ in Feb 2025.