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Canaan Avalon 821 (11.5 TH/s)
Outdated · Canaan · Air-cooled · SHA-256
The Canaan Avalon 821 (11.5 TH/s) is a air-cooled SHA-256 bitcoin ASIC miner from Canaan released in Feb 2018. It runs at 11.5 TH/s while drawing 1,200 W, an efficiency of 104.35 J/TH. It is more than five years old and no longer competitive; the figures below are kept for reference.
More on this machine: Canaan Avalon 821 price history · Canaan Avalon 821 profitability history
Canaan Avalon 821 profitability
As of Nov 2, 2026, hosted in Nigeria at 4.5¢/kWh with 73.6% uptime. Bitcoin $77,903.
| Period | Bitcoin mined | Revenue | Electricity | Profit |
|---|---|---|---|---|
| Daily | 0.000004 BTC | $0.28 | $1.00 | -$0.72 |
| Weekly | 0.000025 BTC | $1.97 | $7.01 | -$5.04 |
| Monthly | 0.000110 BTC | $8.55 | $30.47 | -$21.92 |
| Yearly | 0.001317 BTC | $102.58 | $365.57 | -$262.98 |
Electricity per bitcoin mined: $277,614.
Canaan Avalon 821 price history
From $2,490 in Feb 2018 to $55 in Nov 2022 (-98%).
| Month | Price per unit | Price per TH |
|---|---|---|
| Feb 2018 | $2,326 | $202.25 |
| Mar 2018 | $1,902 | $165.43 |
| Apr 2018 | $902 | $78.40 |
| May 2018 | $721 | $62.69 |
| Jun 2018 | $399 | $34.73 |
| Jul 2018 | $322 | $28.02 |
| Aug 2018 | $425 | $36.97 |
| Sep 2018 | $191 | $16.64 |
| Oct 2018 | $188 | $16.38 |
| Nov 2018 | $186 | $16.21 |
| Dec 2018 | $235 | $20.47 |
| Jan 2019 | $239 | $20.80 |
| Feb 2019 | $309 | $26.84 |
| Mar 2019 | $341 | $29.68 |
| Apr 2019 | $374 | $32.48 |
| May 2019 | $368 | $32.04 |
| Jun 2019 | $331 | $28.80 |
| Jul 2019 | $257 | $22.37 |
| Aug 2019 | $220 | $19.17 |
| Sep 2019 | $118 | $10.29 |
| Oct 2019 | $143 | $12.44 |
| Nov 2019 | $97 | $8.47 |
| Dec 2019 | $99 | $8.58 |
| Jan 2020 | $59 | $5.17 |
| Feb 2020 | $54 | $4.72 |
| Mar 2020 | $59 | $5.11 |
| Apr 2020 | $55 | $4.75 |
| May 2020 | $69 | $5.97 |
| Jun 2020 | $47 | $4.11 |
| Jul 2020 | $49 | $4.30 |
| Aug 2020 | $48 | $4.20 |
| Sep 2020 | $74 | $6.45 |
| Oct 2020 | $141 | $12.22 |
| Nov 2020 | $180 | $15.66 |
| Dec 2020 | $265 | $23.01 |
| Jan 2021 | $465 | $40.41 |
| Feb 2021 | $561 | $48.82 |
| Mar 2021 | $564 | $49.08 |
| Apr 2021 | $368 | $32.02 |
| May 2021 | $246 | $21.42 |
| Jun 2021 | $312 | $27.13 |
| Jul 2021 | $345 | $29.97 |
| Aug 2021 | $323 | $28.10 |
| Sep 2021 | $412 | $35.85 |
| Oct 2021 | $305 | $26.53 |
| Nov 2021 | $305 | $26.53 |
| Dec 2021 | $268 | $23.31 |
| Jan 2022 | $266 | $23.10 |
| Feb 2022 | $253 | $22.03 |
| Mar 2022 | $220 | $19.13 |
| Apr 2022 | $207 | $17.96 |
| May 2022 | $127 | $11.02 |
| Jun 2022 | $127 | $11.08 |
| Jul 2022 | $120 | $10.41 |
| Aug 2022 | $109 | $9.51 |
| Sep 2022 | $104 | $9.00 |
| Oct 2022 | $55 | $4.79 |
| Nov 2022 | $55 | $4.74 |
Where to host the Canaan Avalon 821
| Site | Cooling | Rate | Uptime | Cost per BTC | Profit per month | All-in per unit | Year 1 return |
|---|---|---|---|---|---|---|---|
| UAE | Immersion | 6.5¢ | 99.3% | $400,998 | -$48 | — | — |
| Nigeria | Air-cooled | 4.5¢ | 73.6% | $277,614 | -$22 | — | — |
| Argentina | Air-cooled | 6.5¢ | 98.7% | $400,998 | -$48 | — | — |
Canaan Avalon 821 specifications
| Specification | Value |
|---|---|
| Manufacturer | Canaan |
| Model | Canaan Avalon 821 |
| Release date | Feb 2018 |
| Algorithm | SHA-256 |
| Hashrate | 11.5 TH/s |
| Power consumption | 1200 W |
| Efficiency | 104.35 J/TH |
| Cooling | Air-cooled |
| Weight | 4.7 kg (approx.) |
Canaan Avalon 821 FAQ
Can I buy the Canaan Avalon 821?
The Canaan Avalon 821 is outdated. Newer models make bitcoin far more cheaply.
Is the Canaan Avalon 821 (11.5 TH/s) profitable?
As of Nov 2, 2026, hosted in Nigeria at 4.5¢/kWh, the Canaan Avalon 821 (11.5 TH/s) is calculated to lose $0.72 daily, $21.92 monthly and $262.98 yearly after electricity, at a bitcoin price of $77,903. It always changes with bitcoin's price and network difficulty.
What does it cost to mine one bitcoin with the Canaan Avalon 821?
Electricity to mine one bitcoin with the Canaan Avalon 821 costs about $277,614 in Nigeria, and $400,998 in UAE and $400,998 in Argentina. Bitcoin trades at $77,903, so every coin it mines is made above the price of buying one.
What is the hashrate and power consumption of the Canaan Avalon 821?
The Canaan Avalon 821 produces 11.5 TH/s of SHA-256 hashrate and consumes 1,200 W, giving an efficiency of 104.35 J/TH.
What are the dimensions and weight of the Canaan Avalon 821?
The Canaan Avalon 821 measures about n/a and weighs around 4.7 kg.
Is the Canaan Avalon 821 air-cooled or hydro-cooled?
The Canaan Avalon 821 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 821 be hosted?
We can host the Canaan Avalon 821 in UAE (6.5¢/kWh, 99.3% uptime, immersion), Nigeria (4.5¢/kWh, 73.6% uptime) and Argentina (6.5¢/kWh, 98.7% uptime). The bitcoin it mines goes straight to your own wallet.
How has the price of the Canaan Avalon 821 changed?
The Canaan Avalon 821 sold for $2,490 in Feb 2018 and $55 as of Nov 2022, down 98%. Over that time it ranged from $42 to $2,523.
When was the Canaan Avalon 821 released?
Canaan announced the Canaan Avalon 821 in Feb 2018.