15%
First purchase
On every new user’s first purchase. No limit on the purchase amount.
SHA-256
Antminer S21 Pro ASIC Profitability Calculator
Calculate daily profit, monthly profit, electricity cost, net mining earnings and estimated break-even for a pre-filled Antminer S21 Pro setup.
Pre-filled calculator
Edit hashrate, power, electricity and pool feeDaily profit$2.43
Monthly profit$74.25
Electricity cost$7.83
Net profit$2.43
Estimated break-even~64.65 months
Antminer S21 Pro Overview
- Manufacturer
- Bitmain
- Algorithm
- SHA-256
- Target use
- Hosting / Industrial
- Release year
- 2024
- Positioning
- High-efficiency flagship
The Antminer S21 Pro is a SHA-256 ASIC miner designed for high-efficiency Bitcoin mining. It is positioned for hosted and industrial operations where electricity rates, uptime and cooling have a direct impact on net profitability.
Technical Specifications
Hashrate270 TH/s
Power Consumption3531 W
Efficiency15.1 J/TH
AlgorithmSHA-256
Noise level75 dB
CoolingAir
Want to improve these numbers? Activate TBB to secure a lower operating rate and strengthen your projected margin.
Profitability Breakdown
At the current electricity rate, this ASIC spends $7.83 per day on power and leaves $2.43 net. It becomes unprofitable when electricity rises above roughly $0.04/kWh under the current assumptions.
ElectricityDaily Profit
$0.04/TH/day$-0.54
$0.06/TH/day$-5.94
$0.08/TH/day$-11.34
How Electricity Price Affects Antminer S21 Pro Profitability
Antminer S21 Pro breaks even at about $0.04/kWh in this model. Below that point, hosted or industrial power rates can support positive net mining earnings; above it, home mining becomes much harder to justify.
Open Electricity & EnergyHome Mining vs Hosting for Antminer S21 Pro
Home
- Higher residential electricity rates
- Noise and ventilation constraints
- Self-managed maintenance
- Limited scalability
Hosting
- Industrial electricity rates
- No home noise exposure
- Managed maintenance
- Easier fleet scaling
ROI and Payback Period
Hardware price$4,800.00
Monthly profit$74.25
Payback period~64.65 months
ROI depends on hardware price, BTC price, network difficulty, pool fee and electricity rate. A realistic payback period requires stable uptime and power pricing below the break-even threshold.
Industrial power rates and managed operations can make this ASIC more practical and more profitable. Move to a hosted setup with ECOS.
Pros & Cons of Antminer S21 Pro
Pros
- Strong energy efficiency for SHA-256 mining
- Reliable flagship hardware class
- Good resale value in active ASIC markets
Cons
- High initial hardware cost
- Requires dedicated power capacity
- Noise and cooling make home mining difficult
Alternatives to Antminer S21 Pro
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