Mining Payback Stress Test
Model payback under BTC price shocks, difficulty growth, and your local power rate. Idaho default $0.09/kWh, BTC $68,000.
Defaults are estimates only. Network difficulty resets roughly every 2 weeks; this model compounds monthly for stress-test clarity.
| Miner | Hashrate | Power | Efficiency | Daily Profit | Base Break-even | Stress Break-even | Action |
|---|---|---|---|---|---|---|---|
| Antminer S19 XP | 140 Th/s | 3500W | 25.0 J/TH | $-0.35 | ∞ mo | - | View → |
| WhatsMiner M50S | 126 Th/s | 3500W | 27.8 J/TH | $-1.07 | ∞ mo | - | — |
| Whatsminer M60S | 186 Th/s | 3606W | 19.4 J/TH | $1.79 | 62 mo | - | View → |
| Antminer S21 | 200 Th/s | 3500W | 17.5 J/TH | $2.74 | 43 mo | - | View → |
FTC Disclosure: Some miner links use our Amazon Associates tag (dare404-20). We may earn if you buy. Price to you is unchanged.
Payback Curve
Cumulative net cash flow over 24 months, with monthly difficulty growth applied.
| Month | Difficulty | Monthly Profit | Cumulative Net | Status |
|---|
Break-even BTC Price Sensitivity
Minimum BTC price needed to recover hardware cost within 24 months at different power rates.
| Miner | $0.07/kWh | $0.09/kWh (Idaho) | $0.13/kWh | $0.18/kWh |
|---|
FAQ
Which ASIC miner has the best ROI in 2026?
The Antminer S21 is currently the efficiency leader at ~17.5 J/TH. Lower efficiency means lower daily profit at the same hashrate and power cost.
How much does it cost to run an ASIC miner per month?
At $0.09/kWh, a 3,500W ASIC costs about $226 per month in electricity. At the U.S. average of $0.16/kWh, that rises to about $403 per month.
Can you mine Bitcoin profitably at home?
Only if your electricity is cheap and you can handle the noise and heat. At $0.09/kWh with modern ASICs, home mining can break even or profit depending on BTC price.
What is the break-even BTC price for an Antminer S21?
At $0.09/kWh and current difficulty, the S21 needs a BTC price above roughly $41,000 just to cover electricity. Hardware payback requires a higher BTC price or falling difficulty.
How fast does Bitcoin difficulty erase mining profits?
Difficulty has historically grown 3-7% per adjustment in bull markets. A sustained 5% monthly growth can turn a 12-month payback into 18+ months unless BTC price rises in step.