Antminer S21 electricity cost
The reference 3,500.0 W load consumes 84.00 kWh per full day. At $0.08/kWh that is $6.72 per day, $201.60 per 30-day month and $2,452.80 per year. These are calculated costs, not manufacturer claims.
BITMAIN · 200 TH/S REFERENCE VARIANT
Antminer S21 Calculator
200 TH/s reference. Lower hashrate bins also exist; select the figures on your unit label.
- Manufacturer hashrate
- 200 TH/s
- Manufacturer power
- 3,500.0 W
- Manufacturer efficiency
- 17.5 J/TH
- Algorithm
- SHA-256
Data last checked: 2026-09-27. Manufacturer specification source: official reference ↗. Unknown fields remain unverified.
YOUR INPUTS USD
$0.00$0.30/kWh
CALCULATED RESULTS 30-day month
- Energy / day
- 84.00 kWh
- Electricity / day
- $6.72
- Electricity / month
- $201.60
- Electricity / year
- $2,452.80
- Estimated BTC / day
- 0.00009519
- Gross revenue / day
- $8.01
- Pool fees / day
- $0.16
- Operating profit / day
- $1.13
- Operating profit / month
- $33.96
- Operating profit / year
- $413.16
- Break-even electricity
- $0.0935/kWh
- Break-even BTC price
- $72,040.13
- Simple hardware payback
- Enter hardware price
- Annual operating return
- Unavailable
Source: current user inputs and published formulas. Last updated: on each input change.
Assumes current network conditions remain constant. Estimates exclude taxes, financing, repairs and resale value.
Last updated: . Source: mempool.space — BTC/USD price, mempool.space — estimated network hashrate and current difficulty, mempool.space — mean fees of latest 10 confirmed blocks; subsidy derived from next height.
Profitability at this hashrate
The 200 TH/s reference contributes 200,000,000,000,000 hashes per second to the difficulty-based model. Expected BTC production requires difficulty, subsidy and estimated block fees. The calculator above displays revenue only when those values and a BTC price have a valid source.
Run a Antminer S21 revenue scenario →Break-even electricity
At full uptime, divide daily proceeds after pool fees by 84.00 kWh to obtain this reference’s operating tariff threshold. Each $0.01/kWh adds $0.84 per day to the electricity bill. Hardware recovery and hosting fees are separate.
Efficiency: rated and calculated
The manufacturer lists 17.50 J/TH. Dividing the reference power by hashrate gives 17.5000 J/TH. Small differences can result from nominal specification rounding; compare values at the same operating point.
Heat output
3,500.0 W corresponds to 11,942.5 BTU/hour. Nearly all electrical input ultimately becomes heat. Running power determines peak heat even when average uptime is reduced.
Cooling requirements
The reference heat load is 0.995 cooling tons. At 25°C intake and 35°C exhaust, the ideal all-air equivalent is 1,045 m³/h. This excludes pressure loss, humidity, altitude and recirculation. Hydro references require separate coolant engineering.
Operating cost beyond ASIC power
Adding an illustrative 10% facility-power allowance to this reference adds $0.67 per day at $0.08/kWh. It does not increase the 200 TH/s nominal hashrate. Hosting management, repairs and capital must be entered separately.
Add this model to a farm scenario →Methodology
Daily kWh = watts ÷ 1,000 × 24 × uptime. BTC/day uses difficulty × 2³² expected hashes per block. Heat = watts × 3.412142 BTU/hour. Assumes current network conditions remain constant.
Read formulas, limits and omitted costs →Frequently asked questions
Which Antminer S21 variant is used?
200 TH/s reference variant. 200 TH/s reference. Lower hashrate bins also exist; select the figures on your unit label.
How much electricity does this Antminer S21 use in a day?
84.00 kWh at the reference running power and 100% uptime. Change watts or uptime in the calculator for your measured scenario.
Does a positive operating estimate recover the hardware price?
No. Operating profit excludes capital. Enter your purchase price and use simple payback; future network conditions are not guaranteed.
Interactive cooling scenario
Loading cooling inputs…
Electricity sensitivity table
Fixed reference scenario: Antminer S21, 3,500.0 W, 100% uptime, 2% pool fee. Interactive inputs above do not overwrite this reference table.
| Rate / kWh | kWh / day | Electricity / day | Electricity / month | Electricity / year | Revenue / day | Profit / day | Profit / month |
|---|---|---|---|---|---|---|---|
| $0.03 | 84.00 | $2.52 | $75.60 | $919.80 | $8.01 | $5.33 | $159.96 |
| $0.04 | 84.00 | $3.36 | $100.80 | $1,226.40 | $8.01 | $4.49 | $134.76 |
| $0.05 | 84.00 | $4.20 | $126.00 | $1,533.00 | $8.01 | $3.65 | $109.56 |
| $0.06 | 84.00 | $5.04 | $151.20 | $1,839.60 | $8.01 | $2.81 | $84.36 |
| $0.07 | 84.00 | $5.88 | $176.40 | $2,146.20 | $8.01 | $1.97 | $59.16 |
| $0.08 | 84.00 | $6.72 | $201.60 | $2,452.80 | $8.01 | $1.13 | $33.96 |
| $0.09 | 84.00 | $7.56 | $226.80 | $2,759.40 | $8.01 | $0.29 | $8.76 |
| $0.10 | 84.00 | $8.40 | $252.00 | $3,066.00 | $8.01 | $-0.55 | $-16.44 |
| $0.12 | 84.00 | $10.08 | $302.40 | $3,679.20 | $8.01 | $-2.23 | $-66.84 |
| $0.15 | 84.00 | $12.60 | $378.00 | $4,599.00 | $8.01 | $-4.75 | $-142.44 |
| $0.20 | 84.00 | $16.80 | $504.00 | $6,132.00 | $8.01 | $-8.95 | $-268.44 |
Source: the cited reference power and published formulas. Manufacturer data last checked: 2026-09-27. Revenue is a dated scenario using the snapshot below, not a continuously updated quote. Assumes current network conditions remain constant.
Network snapshot last updated: 2026-09-29T12:30:05.000Z. Source: mempool.space — BTC/USD price mempool.space — estimated network hashrate and current difficulty mempool.space — mean fees of latest 10 confirmed blocks; subsidy derived from next height . Refresh the page to request a newer snapshot.
Data sources and field provenance
Data last checked: 2026-09-27. Manufacturer specification source: official reference ↗.
| Field | Value | Source | Checked |
|---|---|---|---|
| hashrate | 200 | Bitmain | 2026-09-27 |
| powerWatts | 3500 | Bitmain | 2026-09-27 |
| efficiencyJTH | 17.5 | Bitmain | 2026-09-27 |
| algorithm | SHA-256 | Bitmain | 2026-09-27 |
| releaseDate | Not verified | Unknown | Not verified |
| coolingType | air | Bitmain | 2026-09-27 |
| noiseDb | Not verified | Unknown | Not verified |
| dimensions | Not verified | Unknown | Not verified |
| weightKg | Not verified | Unknown | Not verified |
Unknown source URLs are null. Record-level references were preserved from the initial review; no new manufacturer verification date is invented. Read the source policy →
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