Bitmain Antminer S21 Immersion
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BitmainSHA-256BTC
Antminer S21 Immersion (301Th)
301 TH/s5,569 WImmersion-cooled
Profit / day
-$1.70/day
after power at $0.08/kWh
Efficiency
18.50J/TH
Availability
Not stockedWe don’t carry this model. Ask and we’ll try to source one.—
Profitability · SHA-256 · BTC
Is the Antminer S21 Immersion profitable?
Not at $0.08 per kWh. The Bitmain Antminer S21 Immersion (301Th) mines Bitcoin on the SHA-256 algorithm at 301 TH/s, drawing 5,569 W (18.5 J/TH). At $0.08 per kWh it earns about $8.99 a day but spends $10.69 on power, so it loses $1.70 a day.
It’s #110 of 269 SHA-256 miners on efficiency. It isn’t in stock with us at the moment. It’s an immersion-cooled unit, released in December 2024.
- Break-even power price
- $0.067/kWh
- Daily profit rank
- #302of 533
It only makes money below this.
Across every miner we track.
Antminer S21 Immersion specifications
Other coins it can mine
Mine instead
BitcoinBTCRanked on
$8.990.000119 BTC
–
0.000034%
$31.0B
−2.0%
QuaiQUAI
$10.701,483 QUAI
+19%
0.38%
$90kLow liquidity
+14.8%
eCashXEC
$9.831,742,436 XEC
+9%
0.69%
$2.7M
−6.5%
Bitcoin CashBCH
$8.770.0369 BCH
−2%
0.0088%
$140.1M
−13.9%
DigiByte (SHA-256)DGB
$6.352,106 DGB
−29%
0.74%
$2.3M
−4.1%
Paid on top
Fractal BitcoinFB
+<$0.010.00152 FB
+<1%
0.000035%
$2.4M
−19.0%Volatile
NamecoinNMC
+<$0.010.000129 NMC
+<1%
0.000035%
$0Illiquid
+0.4%
ElastosELA
+<$0.010.000129 ELA
+<1%
0.000035%
$311k
−38.1%Highly volatile
HathorHTR
+<$0.010.0116 HTR
+<1%
0.000035%
$69kLow liquidity
−17.1%Volatile
Max potential profitUnlikely
-$1.70/day
-$1.70 BTC profit + <$0.01 paid on top
How it compares · SHA-256 miners
| Miner | Rank | Efficiency | Profit / day |
|---|---|---|---|
| Bitmain Antminer S23 Hyd 3U (1.16 PH) | #1 | 9.5 J/TH | $13.48 |
| Bitdeer SealMiner A4 Ultra Hydro | #2 | 9.4 J/TH | $10.38 |
| Bitmain Antminer S23e Hyd U2H (865T) | #3 | 10.0 J/TH | $9.22 |
| Bitmain Antminer S23e Hyd 2U (865Th) | #4 | 10.0 J/TH | $9.22 |
| Bitmain Antminer S21e XP Hyd 3UNewer model | #10 | 13.0 J/TH | $4.21 |
| Bitmain Antminer S21e XP Hyd (430Th)Earlier model | #20 | 13.0 J/TH | $2.11 |
| MicroBT WhatsMiner M60S | #124 | 18.5 J/TH | -$1.05 |
| MicroBT WhatsMiner M66S | #143 | 18.5 J/TH | -$1.69 |
| Bitmain Antminer S21 Immersion (301Th)This miner | #144 | 18.5 J/TH | -$1.70 |
| MicroBT WhatsMiner M63S | #160 | 18.5 J/TH | -$2.21 |
More from Bitmain
| Miner | Profit / day |
|---|---|
| Bitmain Antminer Z15 Pro (860K)Equihash | $125.48 |
| Bitmain Antminer Z15 Pro (840K)Equihash | $122.43 |
| Bitmain Antminer Z15K (565kh)Equihash | $81.17 |
| Bitmain Antminer Z15KEquihash | $75.09 |
| Bitmain Antminer Z15Equihash | $60.99 |
Figures updated 00:01 UTC, 10 November 2026, using today’s network difficulty and coin prices. Estimates, not financial advice.