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Machine review · Oct 16, 2026 · 6 min read
Avalon A15 review: a low entry price, and Nigeria is where it pays best
Canaan's air-cooled A15 is 203 TH/s at 18.8 J/TH and sits near the bottom of the catalogue on price per terahash. It clears its power at 6¢ today and returns about what dearer machines do in year one, but its coin costs more to make. After the halving, cheap power is where it belongs.
The bottom line
The A15 is Canaan's air-cooled Avalon at the entry end of its A15 series: 203 TH/s from 3,816 W in the unit we list, 18.8 J/TH. At our Argentina site, at 6¢, it makes a bitcoin for about $59,800 of electricity and returns roughly 33% in its first year at today's price. At Nigeria's 3.9¢ the same coin costs about $38,900.
Bought once its price settled, in July 2026, it has mined and kept 0.0100 BTC for $575 of power: $238 of cashflow against a $2,068 landed cost, which is what the first months of a four-year machine look like. Between now and the 2028 halving it has another 0.053 BTC in it, worth about $6,565 with bitcoin back at its previous high: roughly 3.3× its hardware by the halving, with the machine still running afterwards.
What you are buying is a lot of hashrate for $938, $4.62 a terahash. What you are not buying is the cheapest coin: the S21 XP makes one for about $43,000 in the same hall against this machine's $59,800, and the A15XP, one rung up, for about $56,600.
Scores
| Criterion | Score | Why |
|---|---|---|
| Cashflow | 6/10 | Makes a bitcoin for about $59,800 of electricity at 6¢ and returns roughly 33% in year one at today's price. It has covered 12% of its hardware so far and is on track for about 3.3× by the 2028 halving. The S21 XP returns about 35%. |
| Longevity | 5/10 | At 18.8 J/TH its line is $27.07 a petahash a day at 6¢ and $17.60 at 3.9¢. Hashprice halved sits between the two, so after the halving it is a Nigeria machine, which is the move every machine makes once. |
| Efficiency | 4/10 | 18.8 J/TH was a respectable figure in 2024 and is a low one now: the S21 XP runs 13.5 J/TH and the A15 Pro 16.8 in air-cooled boxes. |
| Quality control | 5/10 | Scored as unknown rather than as good. We found no operator reports of the A15 in the field that we could cite, and a repair shop's guide to a sibling is a troubleshooting reference, not a failure rate. |
| Serviceability | 6/10 | Air-cooled and shelf-mounted, with published repair guides for its series. Hosted with us in Argentina, a fault is a parts bill and a line item. We could not open Canaan's page for warranty terms. |
Weighted on what an owner gets back per dollar and how far the machine sits from the line after the 2028 halving. The entry price carries the cashflow score; 18.8 J/TH holds the longevity and efficiency scores down, and a reliability record we could not find is scored as unknown.
Buy it if
- You want the most hashrate for the smallest first cheque in an air-cooled box: about $938 a unit, $4.62 a terahash.
- Your power is at or below about 4.3¢. At that rate the machine stays above its line even with hashprice at half of today's level.
- You expect to cross to Nigeria once, when the figures say so. At 18.8 J/TH its line there is $17.60 a petahash a day, well under today's hashprice.
- You are adding hashrate in small steps, one 188 to 203 TH/s unit at a time, and a first-year return near 33% suits you.
Walk away if
- You are planning past 2028 at 6¢. Its line there is $27.07 a petahash a day, and today's hashprice halved is $19.44, so those years lean on bitcoin recovering.
- You want the cheapest coin. The S21 XP makes one for about $43,000 and the S21 Pro for about $47,700, against this machine's $59,800.
- Your power is between about 4.3¢ and 8.6¢ and you want room above the line after the halving. Between those rates it clears at today's hashprice but needs the recovery; above 8.6¢ it does not clear today.
- You want a long public failure record. We found no operator reports of the A15 we could cite, so we score that as unknown.
What Canaan shipped
Canaan upgraded its Avalon A15 series in November 2024 into four machines: the A15 Pro at 215 TH/s or better and 16.8 J/TH, the A15XP at 200 to 212 TH/s and 17.8 J/TH, the A15 at 188 to 203 TH/s and 18.8 J/TH, and the A15SE at 170 to 185 TH/s and 19.9 J/TH. The plain A15 is the third rung of four.
We could not open Canaan's own product page for the A15, so the specifications here are our store record: 203 TH/s from 3,816 W, 18.8 J/TH, air-cooled. We leave out dimensions and weight because the store record does not hold them.
The rungs above it are reviewed separately: the A15XP takes the same idea to 17.8 J/TH and the A15 Pro to 16.8. This review is about what the cheapest of the three costs, and what that buys.
The price is the point
The first price we hold for the 203 TH/s unit, on 27 April 2026, was $5.29 a terahash. It is $938 today, $4.62 a terahash, for the same 203 TH/s at the same 18.8 J/TH. The lowest price we held between those dates was $4.85 a terahash in September, so today's is the best entry price we have on record for it.
Set against the machines that make a cheaper coin, the gap is large. The A15XP is $5.88 a terahash, the A15 Pro $7.14, the S21 Pro $8.61 and the S21 XP $11.55. That is the A15's argument: a lot of hashrate for a small first cheque. The guide to what a miner costs all-in shows what sits on top of the box.
$938 today. The first price we hold for it, in April 2026, was $5.29 a terahash.
What a coin costs it
At 6¢ in Argentina it makes a bitcoin for about $59,800 of electricity today, against a bitcoin price of $81,619. At Nigeria's 3.9¢ the same machine makes one for about $38,900. The S21 XP makes one in Argentina for about $43,000, the S21 Pro for about $47,700 and the A15XP for about $56,600.
In its first year the A15 returns about 33% in Argentina and 49% in Nigeria. The S21 XP returns 35% in Argentina and the S21 Pro 38%. The low price per terahash is what keeps the A15 in the same range in year one: it makes a dearer coin, on far less money.
Over its run since July 2026, electricity has averaged about $57,700 a coin. That is a short lifetime average; the figure to plan on is today's.
Where the halving puts it
A machine's line is the hashprice at which it stops covering its own power. At 18.8 J/TH a petahash uses 451 kWh a day: $27.07 at 6¢ and $17.60 at Nigeria's 3.9¢. Network hashprice was $38.89 a petahash a day on 15 October on our hashprice chart, so the A15 clears both lines today, the 6¢ one with about 30% to spare.
The 2028 halving halves the coins a petahash earns. At today's price and difficulty that puts hashprice near $19.44: under the 6¢ line and above the Nigerian one. That is today's conditions held flat, not a forecast; it is why every projection we publish assumes the old high returns, and the forward figures here do the same.
In power terms, the A15 clears today's hashprice up to about 8.6¢ a kilowatt-hour and the halved level up to about 4.3¢. That makes it an Argentina machine now and a Nigeria machine after the halving, with the move made once. The guide to crossing once explains why, and the guide to efficiency and halvings shows where the line sits at every J/TH.
What a fault costs you here
We looked for operator threads on the A15 and found nothing specific to it that we could stand behind. What exists is a repair shop's work on its closest sibling: D-Central's guide to the Avalon 1566, an A15-series machine, describes a board that fails to appear and says to start with a hard power cycle at the PDU before anything else. Its Avalon hashboard repair page says to diagnose over the API before opening the case. We treat both as troubleshooting references and not as a failure rate, so the A15 is scored as unknown on quality control.
What a fault costs is the part that matters. Hosted with us in Argentina, a repair is billed at the cost of the parts and nothing else, and it is a line item, not a catastrophe. On a machine that cost $938, a part is a small number.
We found no operator reports of the A15 we could cite. We score that as unknown, not as good.
Our two cents
The A15 is a sound machine at an entry price near the bottom of what we stock. It clears its power at 6¢ today with room, it returns about what machines costing more than twice as much per terahash return in year one, and the one move it will make, to Nigeria, is where its figures improve most: a coin there costs about $38,900 to make.
If the aim is the cheapest coin, the S21 XP makes one for about $43,000 in the same hall, and the M60S++ for about $49,300. Both are in the figure below, ranked on cost per coin and then year-one return, in stock today. A coin that costs less to make is a coin you keep more of.
- MicroBT Whatsminer M74S+ (332 TH/s) — 12 J/TH, In stock, $38,190 of electricity per bitcoin, 33% year one
- MicroBT Whatsminer M73S (560 TH/s) — 13 J/TH, In stock, $41,373 of electricity per bitcoin, 38% year one
- MicroBT Whatsminer M70S (260 TH/s) — 13.5 J/TH, In stock, $42,964 of electricity per bitcoin, 33% year one
Sources and further reading
- Canaan Upgrades Avalon Miner A15 Series Mining Machines — TipRanks (The Fly), 8 Nov 2024
- Avalon 1566 hashboard not detected — D-Central, 2026
- Avalon hashboard repair — domain map and parts — D-Central, Aug 2026
Which machines this covers
Disclosure
Firsthand Bitcoin sells and hosts mining hardware, including this machine. No manufacturer, distributor or affiliate programme paid for or reviewed this page and we take no commission on the links above. Historical figures are computed from daily bitcoin price and network hashprice, each day valued at its own prices. Nothing here is investment advice.