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21energy
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ASIC
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Sha256
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RELEASED DEC 2026
21energy Ofen 3 Pro XL — ROI calculator
Profit /day
$0.03
Income /day
$5.31
0.00005379 BTC/day
Cost $5.28 @ $0.1/kWh
Hashrate
120.0Th/s
Sha256
Power · Efficiency
2200.0W
18.33 j/Th
21energy Ofen 3 Pro XL makes up to $0.03 a day, best on Sha256 hashpower sale. Also available: mining Sha256 at 120.0 Th/s ($-0.95/day). Pulling 2,200 W from the wall — at $0.10/kWh, profitable at today's rates.
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16 minutes ago
Similar miners ↓
Tap to switch · 7 sections ROI calculator 6/7
ROI calculator
ROI calculator for 21energy Ofen 3 Pro XL
Model payback, electricity, and first-year return for this rig.
Hardware cost
$5,000
Electricity rate
$0.10/kWh
Runtime per day
24
Pool fee
2.0%
Difficulty growth /yr
+0%
Net profit /day
$0.00
after electricity & fees
Payback period
—
—
First-year return
$0
—
Projected cumulative profit
The line crosses $0 on the day you break even. Everything above is pure profit.
Monthly P&L · 3-year horizon
Capital cost is booked in month 1. Cumulative columns include the rig purchase, so Net goes positive at true breakeven.
| Month | Earned (mo) | Cost burned (mo) | Cumulative earned | Cumulative cost | Net | % ROI |
|---|
Profit vs cost
cost 121.94%
Tap to switch · 7 sections ROI calculator 6/7
ROI calculator
ROI calculator for 21energy Ofen 3 Pro XL
Model payback, electricity, and first-year return for this rig.
Hardware cost
$5,000
Electricity rate
$0.10/kWh
Runtime per day
24
Pool fee
2.0%
Difficulty growth /yr
+0%
Net profit /day
$0.00
after electricity & fees
Payback period
—
—
First-year return
$0
—
Projected cumulative profit
The line crosses $0 on the day you break even. Everything above is pure profit.
Monthly P&L · 3-year horizon
Capital cost is booked in month 1. Cumulative columns include the rig purchase, so Net goes positive at true breakeven.
| Month | Earned (mo) | Cost burned (mo) | Cumulative earned | Cumulative cost | Net | % ROI |
|---|
Frequently asked
About the 21energy Ofen 3 Pro XL
Is the 21energy Ofen 3 Pro XL profitable?
As of October 2026, the 21energy Ofen 3 Pro XL earns $-0.95/day mining Sha256 at an electricity cost of $0.1/kWh. At this electricity rate it is not profitable.
What is the payback period for the 21energy Ofen 3 Pro XL?
Payback equals hardware cost divided by daily profit. The ROI calculator on this page projects payback months for the 21energy Ofen 3 Pro XL at $0.1/kWh — adjust the electricity rate and the hardware cost to match your scenario. Most miners aim for 12–24 month payback on new hardware.
What's the break-even electricity rate for the 21energy Ofen 3 Pro XL?
Break-even electricity is the rate above which the 21energy Ofen 3 Pro XL stops being profitable. The calculator below derives it from the rig's revenue and power draw — anything below this rate yields positive daily profit, anything above turns the rig into a net loss.
