Whatsminer M66S Profitability 2026
Last updated: July 2026 · Network ~780 EH/s · BTC $100,000
The Whatsminer M66S (MicroBT, 2024) delivers 298 TH/s at 5513 W — an efficiency of 18.5 J/TH. At current network conditions it mines ≈0.0052 BTC/month (≈$523 gross). Hosted at $$0.072/kWh that leaves ≈$233/month profit; its break-even electricity price is $0.130/kWh.
Profit by electricity rate
| Scenario | Rate | Power cost/mo | Profit/mo | Margin |
|---|---|---|---|---|
| Best hosted rate | $0.065 | $262 | $262 | 50% |
| Typical hosted rate | $0.072 | $290 | $233 | 45% |
| Upper hosted rate | $0.08 | $322 | $201 | 38% |
| German home power | $0.35 | $1,410 | $-886 | — |
Excludes pool fees (1–2%) and difficulty drift. Hardware price ≈$5,400 → payback ≈23 months at $0.072/kWh.
Datasheet
| Vendor | MicroBT |
|---|---|
| Hashrate | 298 TH/s |
| Power draw | 5513 W |
| Efficiency | 18.5 J/TH |
| Cooling | hydro |
| Released | 2024 |
| Market price (approx.) | $5,400 |
| Break-even rate | $0.130/kWh |
Calculate with your own numbers
Network: ~780 EH/s · block reward 3.125 BTC · excludes pool fees & difficulty drift. Estimate, not financial advice.
FAQ
How much does the Whatsminer M66S earn per month?
At ~780 EH/s network hashrate and $100,000 BTC, the Whatsminer M66S (298 TH/s) mines ≈0.0052 BTC/month ≈ $523 gross. At a hosted rate of $0.072/kWh that leaves ≈$233/month profit.
What is the break-even electricity price for the Whatsminer M66S?
$0.130/kWh. Above this all-in rate the Whatsminer M66S loses money at current network conditions.
Is the Whatsminer M66S profitable at home in Germany?
No. At ~$0.35/kWh household power it loses ≈$886/month. Hosted mining at $0.065–$0.08/kWh is the realistic option.
How efficient is the Whatsminer M66S?
18.5 J/TH (5513 W at 298 TH/s). That puts it in the current top efficiency class.
Where to host a Whatsminer M66S
Hosted rates of $0.065–$0.08/kWh make the difference between profit and loss for this machine. Compare providers in the Hosting Comparison 2026 — or see other miners: Antminer S21 XP Hyd · Antminer S21 XP · Antminer S21 Hyd · Antminer S21 Pro