Canaan
Avalon A15XP 209T
AvailableNew
- Hashrate
- 209TH/s
- Power
- 3,667W
- Efficiency
- 17.8J/TH
- Air-cooled
- SHA-256
$1,319.55$6.31/TH
Picture of the model. The unit you receive may differ in appearance.
Bitmain Antminer S21 200 TH/s Bitcoin Miner
The Antminer S21 is an air-cooled Bitcoin miner from Bitmain, rated at 200 TH/s and 3,500 W (17.5 J/TH). It runs on 220–277 V single-phase power.
- Hashrate
- 200TH/s
- Power
- 3,500W
- Efficiency
- 17.5J/TH
- Cooling
- Air-cooled
- Coins
- BTC, BCH, BSV
- Input voltage
- 220–277 V
Retail price
$861.84
per unit · $4.31 per TH/s
- 1–4 units$861.84
- 5+ unitsVolume pricing available
View volume pricingVolume pricing
| 1–4 units | $861.84 |
|---|---|
| 5–19 units | Volume pricing on request |
| 20–99 units | Request Quote |
| 100+ units | Contact Mining Sales |
- Ships in
- 5–10 business days
$861.84Free standard shipping. Excludes duties and taxes
- Manufacturer
- Bitmain
- Model
- S21
- Algorithm
- SHA-256
- Condition
- New
Product overview
The Antminer S21 is an air-cooled Bitcoin miner from Bitmain, rated at 200 TH/s and 3,500 W (17.5 J/TH). It runs on 220–277 V single-phase power.
Condition: New.
200 TH/s
Rated hashrate
17.5 J/TH
Energy per terahash
Air-cooled
Cooling method
3,500 W
Power draw at the wall
Technical specifications
Specifications as published by the manufacturer · last verified October 1, 2026 · Bitmain documentation
Fields the manufacturer does not publish are left out rather than estimated.
Performance
| Hashrate | 200 TH/s (±3%) |
|---|---|
| Power consumption | 3,500 W (±5%) |
| Efficiency | 17.5 J/TH |
| Algorithm | SHA-256 |
| Supported coins | BTC, BCH, BSV |
Power & electrical
| Input voltage | 220–277 V AC |
|---|---|
| Electrical phase | Single-phase |
| Input frequency | 47-63 Hz |
| Maximum input current | 20 A |
Cooling
| Cooling type | Air-cooled |
|---|---|
| Noise level | 76 dB |
Physical & environment
| Dimensions (L × W × H) | 400 × 195 × 290 mm |
|---|---|
| Net weight | 15.4 kg |
| Packaged dimensions | 570 × 316 × 430 mm |
| Gross weight | 17.2 kg |
| Operating temperature | 0–45 °C |
| Storage temperature | -20–70 °C |
| Operating humidity (non-condensing) | 10–90 % RH |
| Maximum altitude | 2,000 m |
Connectivity
| Network interface | RJ45 Ethernet 10/100M |
|---|
General
| Manufacturer model number | L1-10 |
|---|---|
| Manufacturer warranty | 365 days from the shipping date |
Mining economics
Estimate output and operating cost for the Antminer S21 at your own power price. Results are calculations from the inputs shown, not a forecast.
Estimated results (per miner, at $0.06/kWh)
- Est. revenue / day
- $7.10
- 0.00008804 BTC mined / day
- Electricity cost / day
- $5.04
- 84 kWh × $0.06
- Operating result / day
- $2.06
- Revenue less electricity
- Revenue / 30 days
- $213.00
- Electricity / 30 days
- $151.20
- Operating result / 30 days
- $61.80
- Energy / day
- 84 kWh
- Energy / 30 days
- 2,520 kWh
- Break-even electricity
- $0.085/kWh
Estimates only. Not financial advice. Results vary with network difficulty, pool fees, uptime, market conditions, the Bitcoin price and the cost of electricity. They are calculated from the inputs shown at constant difficulty and price, and leave out the cost of the hardware, cooling, downtime, taxes and depreciation.
Network data as of 2026-10-28 13:00 UTC · price: mempool.space · difficulty: mempool.space · block reward 3.1391 BTC
Electricity cost by power price
Daily and 30-day electricity cost of Antminer S21 at 3,500 W, with the estimated revenue beside it.
| Electricity price | Electricity / day | Electricity / 30 days | Est. revenue / day | Est. net / day |
|---|---|---|---|---|
| $0.03/kWh | $2.52 | $75.60 | $7.10 | $4.58 |
| $0.05/kWh | $4.20 | $126.00 | $7.10 | $2.90 |
| $0.06/kWhselected | $5.04 | $151.20 | $7.10 | $2.06 |
| $0.07/kWh | $5.88 | $176.40 | $7.10 | $1.22 |
| $0.10/kWh | $8.40 | $252.00 | $7.10 | -$1.30 |
| $0.12/kWh | $10.08 | $302.40 | $7.10 | -$2.98 |
| $0.15/kWh | $12.60 | $378.00 | $7.10 | -$5.50 |
| $0.20/kWh | $16.80 | $504.00 | $7.10 | -$9.70 |
Compare miners
How the Antminer S21 compares with the closest alternatives by cooling type and efficiency.
| Model | Hashrate | Power | Efficiency | Cooling | Price | $/TH | Side by side |
|---|---|---|---|---|---|---|---|
| Antminer S21 (this miner) | 200 TH/s | 3,500 W | 17.5 J/TH | Air-cooled | $861.84 | $4.31 | |
| Avalon A15XP 209T | 209 TH/s | 3,667 W | 17.8 J/TH | Air-cooled | $1,319.55 | $6.31 | Side by side |
| Avalon A15 — 203Th/s | 203 TH/s | 3,647 W | 18 J/TH | Air-cooled | $1,044.05 | $5.14 | Side by side |
| WhatsMiner M60S+ 200T | 200 TH/s | 3,400 W | 17 J/TH | Air-cooled | $3,040 | $15.20 | Side by side |
| Whatsminer M60S 190T | 190 TH/s | 3,441 W | 18.1 J/TH | Air-cooled | $1,709.05 | $9.00 | Side by side |
Shipping
Standard shipping is free to every destination we ship to. If you need it faster, choose express shipping at checkout and we quote it before you pay. Import duties, taxes and customs clearance are set by the destination country and are the importer's responsibility unless your quotation states otherwise.
- Package dimensions
- 570 × 316 × 430 mm
- Gross weight
- 17.2 kg
Documentation
Links open the manufacturer's own documentation on the manufacturer's website.
Antminer S21 questions
How much electricity does the Antminer S21 use?
The Antminer S21 draws 3,500 W at the wall (±5%). Running continuously that is about 84 kWh per day and 2,520 kWh per 30 days. Multiply by your electricity price to get the running cost, or use the calculator.
What is the hashrate and efficiency of the Antminer S21?
Rated hashrate is 200 TH/s (±3%) at 17.5 J/TH. Lower J/TH means less energy per unit of hashrate. See Understanding J/TH.
What voltage does the Antminer S21 need?
Input voltage is 220–277 V AC, single-phase at 47-63 Hz. It cannot run on a 110–120 V household circuit. Confirm your supply, breaker and cabling with a qualified electrician before ordering. See Bitcoin miner power requirements.
How is the Antminer S21 cooled?
The Antminer S21 is air-cooled with built-in fans. It needs a steady supply of cool intake air and a path to exhaust hot air. Rated noise is 76 dB. Compare options in Air vs hydro Bitcoin miners.
How loud is the Antminer S21?
The manufacturer rates it at 76 dB. That is industrial-level noise and unsuitable for a living space without a dedicated, sound-treated enclosure.
Can I order the Antminer S21 in bulk?
Yes. Orders are handled by quantity: small quantities through checkout when a price is published, and larger quantities by quotation with pricing, batch and logistics confirmed by sales. Request a wholesale quote.
Similar miners
The closest alternatives by cooling type and efficiency.
Canaan
Avalon A15 — 203Th/s
AvailableNew- Hashrate
- 203TH/s
- Power
- 3,647W
- Efficiency
- 18J/TH
- Air-cooled
- SHA-256
$1,044.05$5.14/TH
MicroBT
WhatsMiner M60S+ 200T
AvailableNew- Hashrate
- 200TH/s
- Power
- 3,400W
- Efficiency
- 17J/TH
- Air-cooled
- SHA-256
$3,040$15.2/TH
MicroBT
Whatsminer M60S 190T
AvailableNew- Hashrate
- 190TH/s
- Power
- 3,441W
- Efficiency
- 18.1J/TH
- Air-cooled
- SHA-256
$1,709.05$8.99/TH
Wholesale & project supply
Need the Antminer S21 in volume?
Send quantity, destination and required date. Sales replies with batch availability, unit pricing and freight options for your order size.
- 20+ units
- Mixed models
- Container orders
- Project procurement
Antminer S21
$861.84