Bitmain Antminer S21 XP Bitcoin Cash Mining Profitability Simulation 2026

Daily Results at $0.07/kWh

Based on Bitcoin Cash price: $210.00 — Network hashrate — Live data from our API

Daily Revenue

$6.08

0.028929 BCH

Daily Electricity

$-5.45

3,245 W × 24 h × $0.07

Daily Profit
$0.6234
Marginal

Monthly Profit

$18.70

30-day estimate

$0.078/kWh

Break-even electricity rate

$188.45

Break-even BCH price at $0.07/kWh

10,427 days

Estimated hardware ROI at $0.07/kWh

$227.54

Projected annual profit (constant prices)

Profitability Analysis

The Bitmain Antminer S21 XP mines Bitcoin Cash profitably below $0.078/kWh. This covers most industrial and low-cost commercial electricity contracts. Miners on residential tariffs above $0.08/kWh should carefully model expected ROI before deploying this hardware.

As a dedicated ASIC, the Bitmain Antminer S21 XP is permanently optimised for SHA-256 — the algorithm used by Bitcoin and Bitcoin Cash. It cannot be repurposed for other algorithms, so its long-term viability is directly tied to the economics of those specific coins.

At 3,245 watts and an average electricity consumption of 2,336 kWh per month, electricity cost is the single largest variable in profitability. The difference between $0.04/kWh and $0.12/kWh amounts to $186.91 per month in operating margins — which is why electricity rate selection is as important as hardware selection for any serious mining operation.

Profitability at Key Electricity Rates

All figures assume constant Bitcoin Cash price ($210.00) and current network difficulty. Actual results will vary as both change over time.

Electricity Rate	Daily Revenue	Daily Elec. Cost	Daily Profit	Monthly Profit	Status
$0.04/kWh	$6.08	$3.12	$2.96	$88.79	Marginal
$0.06/kWh	$6.08	$4.67	$1.40	$42.07	Marginal
$0.08/kWh	$6.08	$6.23	$-0.1554	$-4.66	Break-Even
$0.10/kWh	$6.08	$7.79	$-1.71	$-51.39	Break-Even
$0.12/kWh	$6.08	$9.35	$-3.27	$-98.12	Unprofitable

Bitmain Antminer S21 XP — Key Specifications

Manufacturer	Bitmain
Category	ASIC
Algorithm	SHA-256
Hashrate	270 TH/s
Power Draw	3,245 W
Efficiency	12 J/TH
Noise	75 dB(A)
Approx. Price	$6,500
Supported Coins	BTC, BCH
Release	2024-Q3

→ Full Bitmain Antminer S21 XP review, pros & cons, and buying guide

How to Mine Bitcoin Cash with the Bitmain Antminer S21 XP

Acquire and receive the Bitmain Antminer S21 XP
Purchase the Bitmain Antminer S21 XP from an authorised reseller or reputable secondary market. Budget approximately $6,500. Verify the unit is complete and inspect for physical damage before powering on. The unit ships ready to mine — no assembly required beyond power and network connections.
Connect power and network
Connect the Bitmain Antminer S21 XP to a dedicated 3245W power supply on a 16 A+ circuit at 220–240 V. Connect an Ethernet cable to your router. Power on the unit and wait 2–3 minutes for it to boot.
Configure your Bitcoin Cash mining pool
Access the miner's web interface by entering its IP address in your browser (find it via your router's DHCP lease list). Navigate to Miner Configuration and enter your chosen pool stratum URL, your Bitcoin Cash wallet address as the worker username, and 'x' as the password. Recommended pools: ViaBTC, AntPool, F2Pool.
Monitor performance and optimise
After starting, confirm your hashrate matches the expected 270 TH/s in the pool dashboard (allow 10–15 minutes for the pool to register your worker). Use our live Bitcoin Cash calculator to track daily earnings against your electricity cost. Consider enabling auto-tune mode or third-party firmware (BOS+ for Antminer units) to improve efficiency 5–10%.

Recommended Bitcoin Cash Mining Pools

ViaBTC stratum+tcp://bch.viabtc.com:3333 2% PPLNS

AntPool stratum+tcp://stratum.antpool.com:3333 2.5% FPPS

F2Pool stratum+tcp://bch.f2pool.com:3333 2.5% FPPS

Bitmain Antminer S21 XP vs. Other Bitcoin Cash Miners

Sorted by efficiency. Daily profit calculated at $0.07/kWh.

Hardware	Hashrate	Power	Efficiency	Daily Profit	Approx. Price
Bitmain Antminer S21 XP Hyd	473 TH/s	5,676 W	12 J/TH	$1.11	$12,000
MicroBT Whatsminer M66S	298 TH/s	3,441 W	11.5 J/TH	$0.9241	$5,800
This page Bitmain Antminer S21 XP	270 TH/s	3,245 W	12 J/TH	$0.6234	$6,500
Bitmain Antminer S21 Pro	234 TH/s	3,510 W	15 J/TH	$-0.6318	$4,500
Bitmain Antminer S21	200 TH/s	3,500 W	17.5 J/TH	$-1.38	$3,200
MicroBT Whatsminer M60S	186 TH/s	3,441 W	18.5 J/TH	$-1.60	$2,800
Canaan Avalon A1566	185 TH/s	3,430 W	18.5 J/TH	$-1.60	$2,500
Bitmain Antminer S19k Pro	120 TH/s	2,760 W	23 J/TH	$-1.94	$1,400

Frequently Asked Questions

Is the Bitmain Antminer S21 XP profitable for Bitcoin Cash mining in 2026?

At $0.07/kWh, the Bitmain Antminer S21 XP generates approximately $0.6234 per day mining Bitcoin Cash at current prices ($210.00/coin). The break-even electricity rate is $0.078/kWh. This hardware is profitable at average industrial electricity rates. Use our live Bitcoin Cash calculator for updated estimates as prices and difficulty change.

What electricity rate does the Bitmain Antminer S21 XP need to mine Bitcoin Cash profitably?

The Bitmain Antminer S21 XP breaks even on Bitcoin Cash mining at exactly $0.0780/kWh at current network conditions. At $4 cents/kWh, the daily profit is $2.96; at $8 cents/kWh it is $-0.1554. See the full profitability table on this page for all five electricity tiers.

What is the ROI timeline for the Bitmain Antminer S21 XP mining Bitcoin Cash?

At a hardware acquisition price of approximately $6,500 and $0.07/kWh electricity, the Bitmain Antminer S21 XP has an estimated ROI of 10,427 days (347.6 months). ROI calculations assume constant Bitcoin Cash price and network difficulty, both of which fluctuate significantly.

How does the Bitmain Antminer S21 XP compare to other Bitcoin Cash miners?

The Bitmain Antminer S21 XP mines Bitcoin Cash at 270 TH/s with 12 J/TH efficiency. There are 8 compatible hardware models for Bitcoin Cash in our database. See the comparison table below for a side-by-side efficiency and profitability breakdown of all compatible miners.

Bitmain Antminer S21 XP Bitcoin Cash Mining Profitability — 2026 Simulation