Antminer S21 profitability & price LIVE
Bitmain SHA-256 miner for BTC. Currently $0.35/day net at $0.072/kWh.
About the Antminer S21
The Antminer S21 is a industrial-grade SHA-256 ASIC miner from Bitmain, delivering 200 TH/s for 3,500 W of power draw — an efficiency of 17.5 J/TH.
Released in Feb 2024, it targets the BTC market: at today's network conditions (August 07, 2026) it produces about $6.40/day in BTC revenue, or $0.35/day net of electricity at $0.072/kWh, and stays in the green down to a break-even rate of $0.076/kWh. Street price is around $1,499 — request a quote below for live stock and delivery times.
Profitability vs electricity cost
| Rate ($/kWh) | Cost/day | Revenue/day | Net profit/day | |
|---|---|---|---|---|
| $0.02 | $1.68 | $6.40 | +$4.72 | |
| $0.04 | $3.36 | $6.40 | +$3.04 | |
| $0.06 | $5.04 | $6.40 | +$1.36 | |
| $0.08 | $6.72 | $6.40 | -$0.32 | |
| $0.10 | $8.40 | $6.40 | -$2.00 | |
| $0.12 | $10.08 | $6.40 | -$3.68 | |
| $0.14 | $11.76 | $6.40 | -$5.36 | |
| $0.16 | $13.44 | $6.40 | -$7.04 | |
| $0.18 | $15.12 | $6.40 | -$8.72 | |
| $0.20 | $16.80 | $6.40 | -$10.40 |
Break-even electricity price
The Antminer S21 currently earns $0.35/day net at $0.072/kWh (August 07, 2026 snapshot). It stays profitable as long as your electricity costs less than $0.076/kWh — its break-even rate. Difficulty increases and coin-price moves will shift this number — recheck before ordering.
FAQ — Antminer S21
Is the Antminer S21 profitable?
At $0.072/kWh the Antminer S21 earns about $6.40/day in revenue and $0.35/day in net profit. Its break-even electricity price is $0.076/kWh — above that rate it mines at a loss.
What electricity rate does the Antminer S21 need?
The Antminer S21 breaks even at $0.076/kWh at current network conditions — below that rate it earns $0.35/day net at $0.072/kWh. Miners with access to industrial power ($0.04–0.07/kWh) have the healthiest margins.
What does the Antminer S21 mine?
The Antminer S21 is a SHA-256 miner. It mines BTC.