joulemathASIC profitability · Last updated
Is the Antminer S19j Pro still profitable in 2026?
Short answer: only if your power costs less than about $0.045/kWh. One Antminer S19j Pro grosses about $3.28 a day at the hashprice on November 11, 2026, loses about $0.40 a day at $0.05/kWh, and stops making money above about $0.045/kWh. Specs from the Bitmain spec sheet, hashprice from the mempool.space API.
Want your own power price and pool fee? Open the ASIC miner profitability calculator with the Antminer S19j Pro preloaded.
The S19j Pro shipped in 2021 and is still one of the most common used miners out there. The top version does 104 TH/s at 3,068 W, or 29.5 J/TH, which is more than twice the energy per terahash of an S21 XP. So whether it still pays comes down to one thing: your power price.
- Hashrate: 104 TH/s
- Power: 3,068 W
- Efficiency: 29.5 J/TH
- Source: Bitmain spec sheet, accessed November 3, 2026.
How much does the Antminer S19j Pro make a day at different power prices?
At the hashprice below, one Antminer S19j Pro grosses about $3.28 a day. At $0.05/kWh it loses about $0.40 a day, and it breaks even at about $0.045/kWh.
| Power price | Revenue / day | Power / day | Profit / day | Profit / 30 days |
|---|---|---|---|---|
| $0.03 | $3.28 | $2.21 | $1.07 | $32 |
| $0.04 | $3.28 | $2.95 | $0.34 | $10 |
| $0.05 | $3.28 | $3.68 | -$0.40 | -$12 |
| $0.06 | $3.28 | $4.42 | -$1.14 | -$34 |
| $0.07 | $3.28 | $5.15 | -$1.87 | -$56 |
| $0.08 | $3.28 | $5.89 | -$2.61 | -$78 |
| $0.09 | $3.28 | $6.63 | -$3.35 | -$100 |
| $0.10 | $3.28 | $7.36 | -$4.08 | -$122 |
Hashprice $0.0316 per TH/s per day, computed November 11, 2026 at 11:52 UTC from the mempool.space API: BTC $74,003, difficulty 148.36 T, average reward 3.1447 BTC per block over the last 144 blocks. Revenue is gross: no pool fee, downtime, hosting markup or hardware cost. Assumes the machine runs at spec 24 hours a day (our assumption). Figures update when the site is rebuilt.
What is the Antminer S19j Pro break-even power price?
Break-even is daily revenue divided by daily energy use. The Antminer S19j Pro burns 3,068 W × 24 h = about 73.6 kWh a day, and grosses about $3.28, so it breaks even at about $0.045/kWh. Pay more than that for power and the bill is bigger than the revenue.
Is the Antminer S19j Pro still profitable today?
Only on cheap power. At the hashprice on November 11, 2026, one Antminer S19j Pro grosses about $3.28 a day and breaks even at about $0.045/kWh before pool fees. Pay less than that and it still makes money; pay more and the power bill is bigger than the revenue.
Here is how that line compares with real industrial power prices from our power price pages, each with its own source and date.
| Place | Price | $/kWh | Antminer S19j Pro profit / day | Pays its power bill? |
|---|---|---|---|---|
| Texas (ERCOT) | Average industrial price, July 2026 | $0.071 | -$1.92 | No |
| Paraguay | All-in industrial, low end | $0.040 | $0.34 | Yes |
| Paraguay | All-in industrial, high end | $0.050 | -$0.40 | No |
| Ethiopia | Data mining tariff, daily average (July 2026 to July 2027) | $0.050 | -$0.40 | No |
| UAE | DEWA industrial tariff above 10,000 kWh a month, plus fuel surcharge (October 2026, excl. VAT) | $0.120 | -$5.54 | No |
Prices and their sources: Texas from the EIA Electric Power Monthly (July 2026), Paraguay from Hashrate Index (October 2026), Ethiopia from Addis Standard, UAE from DEWA converted at the 3.6725 AED/USD peg. Full notes on each power price page. Profit is gross of pool fees and hardware cost, at spec, 24 hours a day.
How long does a used Antminer S19j Pro take to pay back?
A used Antminer S19j Pro sold for a median of $175 on eBay (11 sales, 90 days of eBay sales to October 30, 2026, ING Mining used ASIC miner sold prices). At $0.04/kWh and the hashprice on November 11, 2026, it nets about $0.34 a day, so it pays back in about 520 days. At $0.03/kWh that drops to 163 days. Cheap to buy, expensive to run: newer machines cost far more up front but burn less power per terahash. Same live hashprice for every machine below.
| Machine | Used median (sales) | Middle half | Payback at $0.03 | Payback at $0.04 | Payback at $0.05 |
|---|---|---|---|---|---|
| Antminer S19j Pro | $175 (11) | $147 to $192 | 163 days | 520 days | never |
| Antminer S19 XP | $288 (50) | $250 to $350 | 127 days | 187 days | 355 days |
| Antminer S21 XP | $2,288 (16) | $2,178 to $2,649 | 388 days | 456 days | 552 days |
Used prices: ING Mining used ASIC miner sold prices, 90-day medians of eBay sales to October 30, 2026, read November 3, 2026. Payback = used price ÷ daily profit at that power price (our arithmetic), holding today's hashprice flat. No pool fee, shipping, hosting or repairs. "Never" means the machine doesn't cover its power bill at that price.
Should you swap your Antminer S19j Pro for an Antminer S21 XP?
Selling a used Antminer S19j Pro (median $175) and buying a used Antminer S21 XP (median $2,288) costs about $2,113 net. At $0.05/kWh the Antminer S21 XP nets about $4.55 a day more than the Antminer S19j Pro, so the swap pays for itself in about 465 days at today's hashprice. The cheaper your power, the less the swap is worth. The Antminer S21 XP also draws 577 W more per box (3,645 W vs 3,068 W), so check your circuit first.
| Power price | Antminer S19j Pro profit / day | Antminer S21 XP profit / day | Extra per day | Swap payback |
|---|---|---|---|---|
| $0.03 | $1.07 | $5.90 | $4.82 | 438 days |
| $0.04 | $0.34 | $5.02 | $4.68 | 451 days |
| $0.05 | -$0.40 | $4.15 | $4.55 | 465 days |
| $0.06 | -$1.14 | $3.27 | $4.41 | 479 days |
Used medians from ING Mining used ASIC miner sold prices (90 days of eBay sales to October 30, 2026, read November 3, 2026). Net cost = Antminer S21 XP median minus Antminer S19j Pro median. Payback = net cost ÷ extra daily profit (our arithmetic), holding today's hashprice flat. No pool fee, shipping, eBay fees or hosting.
Will the Antminer S19j Pro be profitable after the 2028 halving?
If BTC price, difficulty and fees stayed where they are, its break-even would fall from about $0.045 to about $0.022/kWh. The subsidy halves from 3.125 to 1.5625 BTC at block 1,050,000, 74,568 blocks from now, which at 10 minutes a block is around April 2028. Fees make up the rest of the block reward: 3.1447 BTC per block on average over the last 144 blocks, of which 3.125 is subsidy (mempool.space). Price and difficulty will move before then, so treat this as a stress test, not a forecast.
Which Antminer S19j Pro version do you have, and does it matter?
For break-even, no. Bitmain sells the Antminer S19j Pro in 6 hashrate bins from 84 to 104 TH/s, all rated 29.5 J/TH, so every bin breaks even at the same power price. Bigger bins just earn, or lose, more per box.
| Version | W | Revenue / day | Profit / day at $0.04 | Profit / day at $0.05 |
|---|---|---|---|---|
| 104 TH/s | 3,068 | $3.28 | $0.34 | -$0.40 |
| 100 TH/s | 2,950 | $3.16 | $0.32 | -$0.38 |
| 96 TH/s | 2,832 | $3.03 | $0.31 | -$0.37 |
| 92 TH/s | 2,714 | $2.90 | $0.30 | -$0.35 |
| 88 TH/s | 2,596 | $2.78 | $0.28 | -$0.34 |
| 84 TH/s | 2,478 | $2.65 | $0.27 | -$0.32 |
Bins and wattage from the Bitmain spec sheet (accessed November 3, 2026), which allows ±3% on hashrate and ±5% on power. Revenue at the hashprice below.
How much does it cost to mine 1 Bitcoin with an Antminer S19j Pro?
At $0.05/kWh, electricity alone costs about $84,716 to mine 1 BTC with an Antminer S19j Pro, about 114% of the $74,003 BTC price on November 11, 2026. That is about 1,694,328 kWh per BTC, and one machine on its own would need about 63 years to mine 1 BTC.
| Power price | Electricity per BTC | Share of BTC price | Left per BTC after power |
|---|---|---|---|
| $0.03/kWh | $50,830 | 69% | $23,173 |
| $0.05/kWh | $84,716 | 114% | -$10,713 |
| $0.08/kWh | $135,546 | 183% | -$61,543 |
Our arithmetic: BTC per day = Antminer S19j Pro revenue per day × 0.98 (2% pool fee) ÷ BTC price; cost per BTC = 73.6 kWh a day × power price ÷ BTC per day. Hashprice and BTC price from the mempool.space API on November 11, 2026. Electricity only: no hardware, hosting or downtime. The same math for the whole market is in how much it costs to mine 1 Bitcoin.
The next difficulty adjustment, at block 975,744 (312 blocks away), is estimated at -6.72% around Friday, November 13 (mempool.space difficulty-adjustment API, read November 11, 2026). If the BTC price and fees hold, hashprice would move from $0.0316 to about $0.0338 per TH/s per day (our math: hashprice ÷ (1 − 0.0672)). The estimate shifts with network hashrate until the block is mined. For a Antminer S19j Pro that would move the break-even power price from about $0.045 to about $0.048/kWh (before pool fee).
How does the Antminer S19j Pro compare with other ASICs?
Same live hashprice for every machine, sorted by efficiency (lowest J/TH first). The Antminer S19j Pro ranks 10 of 10.
| Model | TH/s | W | J/TH | Revenue / day | Break-even $/kWh |
|---|---|---|---|---|---|
| Antminer S21 XP | 270 | 3,645 | 13.5 | $8.52 | $0.097 |
| WhatsMiner M70S | 248 | 3,348 | 13.5 | $7.83 | $0.097 |
| Antminer S21 Pro | 234 | 3,510 | 15 | $7.38 | $0.088 |
| Antminer S21 | 200 | 3,500 | 17.5 | $6.31 | $0.075 |
| WhatsMiner M63S | 408 | 7,344 | 18 | $12.87 | $0.073 |
| WhatsMiner M60S | 186 | 3,441 | 18.5 | $5.87 | $0.071 |
| WhatsMiner M66S | 290 | 5,365 | 18.5 | $9.15 | $0.071 |
| Antminer S19 XP | 141 | 3,031.5 | 21.5 | $4.45 | $0.061 |
| Antminer S19k Pro | 120 | 2,760 | 23 | $3.79 | $0.057 |
| Antminer S19j Pro | 104 | 3,068 | 29.5 | $3.28 | $0.045 |
Specs from each manufacturer, linked on each model page. Gross revenue, no pool fee or hardware cost.
Same family: Antminer S19 XP (141 TH/s, 21.5 J/TH, break-even $0.061/kWh), Antminer S19k Pro (120 TH/s, 23 J/TH, break-even $0.057/kWh). Every model side by side: ASIC profitability by model.
FAQ
Is the Antminer S19j Pro still profitable?
Only on cheap power. At the hashprice on November 11, 2026, one Antminer S19j Pro grosses about $3.28 a day and breaks even at about $0.045/kWh before pool fees. Pay less than that and it still makes money; pay more and the power bill is bigger than the revenue. Of the industrial prices we track, it covers its power bill in Paraguay at $0.040 but not in Texas (ERCOT) at $0.071, Paraguay at $0.050, Ethiopia at $0.050, UAE at $0.120.
How much is a used Antminer S19j Pro?
About $175. That's the median of 11 eBay sales over the 90 days to October 30, 2026, with the middle half from $147 to $192 (ING Mining used ASIC miner sold prices).
How long does a used Antminer S19j Pro take to pay back?
A used Antminer S19j Pro sold for a median of $175 on eBay (11 sales, 90 days of eBay sales to October 30, 2026, ING Mining used ASIC miner sold prices). At $0.04/kWh and the hashprice on November 11, 2026, it nets about $0.34 a day, so it pays back in about 520 days. At $0.03/kWh that drops to 163 days.
Should I upgrade my Antminer S19j Pro to an Antminer S21 XP?
Selling a used Antminer S19j Pro (median $175) and buying a used Antminer S21 XP (median $2,288) costs about $2,113 net. At $0.05/kWh the Antminer S21 XP nets about $4.55 a day more than the Antminer S19j Pro, so the swap pays for itself in about 465 days at today's hashprice. The cheaper your power, the less the swap is worth.
Will the Antminer S19j Pro be profitable after the 2028 halving?
If BTC price, difficulty and fees stayed where they are, its break-even would fall from about $0.045 to about $0.022/kWh. The subsidy halves from 3.125 to 1.5625 BTC at block 1,050,000, 74,568 blocks from now, which at 10 minutes a block is around April 2028.
What is the difference between the Antminer S19j Pro versions?
Only the hashrate bin. Bitmain lists 104T, 100T, 96T, 92T, 88T, 84T versions, all at 29.5 J/TH, from 2,478 W to 3,068 W. They all break even at the same power price.
How much does it cost to mine 1 BTC with an Antminer S19j Pro?
At $0.05/kWh, electricity alone costs about $84,716 to mine 1 BTC with an Antminer S19j Pro, about 114% of the $74,003 BTC price on November 11, 2026. That is about 1,694,328 kWh per BTC, and one machine on its own would need about 63 years to mine 1 BTC. Hardware, pool fee beyond 2%, hosting and downtime come on top.
What will the next difficulty adjustment do to the Antminer S19j Pro?
The next difficulty adjustment, at block 975,744 (312 blocks away), is estimated at -6.72% around Friday, November 13 (mempool.space difficulty-adjustment API, read November 11, 2026). If the BTC price and fees hold, hashprice would move from $0.0316 to about $0.0338 per TH/s per day (our math: hashprice ÷ (1 − 0.0672)). The estimate shifts with network hashrate until the block is mined. For a Antminer S19j Pro that would move the break-even power price from about $0.045 to about $0.048/kWh, before pool fee.
How much does the Antminer S19j Pro make per day?
At a hashprice of $0.0316 per TH/s per day, one Antminer S19j Pro (104 TH/s) grosses about $3.28 a day before power. At $0.05/kWh it loses about $0.40 a day after the power bill, or about $12 over 30 days.
How much electricity does the Antminer S19j Pro use?
Bitmain lists it at 3,068 W, so it uses about 73.6 kWh a day running 24 hours. At $0.05/kWh that's about $3.68 a day of power.
What power price does the Antminer S19j Pro need to be profitable?
Below about $0.045/kWh at today's hashprice. That's its daily revenue ($3.28) divided by its daily energy use (73.6 kWh). Pool fees aren't included, so if your pool charges one the real line is a bit lower.
Is the Antminer S19j Pro efficient compared with other ASICs?
At 29.5 J/TH it ranks 10 of 10 on efficiency among the Antminer and WhatsMiner models we track (lower J/TH is better). The most efficient here is the Antminer S21 XP at 13.5 J/TH.
What do these numbers leave out?
Pool fees, downtime, hosting markups and the price of the machine itself. They also hold difficulty and the BTC price where they are today, and both move. Use the ASIC calculator for your own pool fee and power price.
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Wondering whether the same kilowatts would earn more renting GPUs? Try the mine vs AI per-kW calculator, or see what an H100 or RTX 4090 earns per kW. What power costs in big mining places: industrial power prices. Learn the math: is Bitcoin mining profitable in 2026? and the ASIC profitability formulas and sources. Or see all ASICs.