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Canaan Avalon 921 (20 TH/s)
Outdated · Canaan · Air-cooled · SHA-256
The Canaan Avalon 921 (20 TH/s) is a air-cooled SHA-256 bitcoin ASIC miner from Canaan released in Sep 2018. It hashes at 20 TH/s while drawing 1,700 W, an efficiency of 85 J/TH. It is more than five years old and no longer competitive; the figures below are kept for reference.
Canaan Avalon 921 profitability
As of Sep 17, 2026, hosted in Argentina at 6.0¢/kWh with 98.7% uptime. Bitcoin $77,356.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000010 BTC | $0.76 | $2.54 | -$1.78 |
| Weekly | 0.000069 BTC | $5.30 | $17.76 | -$12.45 |
| Monthly | 0.000298 BTC | $23.05 | $77.18 | -$54.13 |
| Yearly | 0.003575 BTC | $276.56 | $926.00 | -$649.44 |
Electricity per bitcoin mined: $259,007.
Where to host the Canaan Avalon 921
| Site | Cooling | Rate | Uptime | Cost per BTC | Profit per month | All-in per unit | Year 1 return |
|---|---|---|---|---|---|---|---|
| UAE | Immersion | 6.0¢ | 99.3% | $259,007 | -$54 | — | — |
| Nigeria | Air-cooled | 4.0¢ | 74.7% | $172,671 | -$21 | — | — |
| Argentina | Air-cooled | 6.0¢ | 98.7% | $259,007 | -$54 | — | — |
Canaan Avalon 921 specifications
| Specification | Value |
|---|---|
| Manufacturer | Canaan |
| Model | Canaan Avalon 921 |
| Release date | Sep 2018 |
| Algorithm | SHA-256 |
| Hashrate | 20 TH/s |
| Power consumption | 1700 W |
| Efficiency | 85 J/TH |
| Cooling | Air-cooled |
Canaan Avalon 921 FAQ
Can I buy the Canaan Avalon 921?
The Canaan Avalon 921 is outdated. Newer models make bitcoin far more cheaply.
Is the Canaan Avalon 921 (20 TH/s) profitable?
As of Sep 17, 2026, hosted in Argentina at 6.0¢/kWh, the Canaan Avalon 921 (20 TH/s) is calculated to lose $1.78 daily, $54.13 monthly and $649.44 yearly after electricity, at a bitcoin price of $77,356. It always changes with bitcoin's price and network difficulty.
What does it cost to mine one bitcoin with the Canaan Avalon 921?
Electricity to mine one bitcoin with the Canaan Avalon 921 costs about $259,007 in Argentina, and $259,007 in UAE and $172,671 in Nigeria. Bitcoin trades at $77,356, so every coin it mines is made above the price of buying one.
What is the hashrate and power consumption of the Canaan Avalon 921?
The Canaan Avalon 921 produces 20 TH/s of SHA-256 hashrate and consumes 1,700 W, giving an efficiency of 85 J/TH.
Is the Canaan Avalon 921 air-cooled or hydro-cooled?
The Canaan Avalon 921 is air-cooled with fans. In the UAE we run air-cooled machines in immersion tanks instead, which keeps them cool in desert heat.
Where can the Canaan Avalon 921 be hosted?
We can host the Canaan Avalon 921 in UAE (6.0¢/kWh, 99.3% uptime, immersion), Nigeria (4.0¢/kWh, 74.7% uptime) and Argentina (6.0¢/kWh, 98.7% uptime). The bitcoin it mines goes straight to your own wallet.
When was the Canaan Avalon 921 released?
Canaan announced the Canaan Avalon 921 in Sep 2018.