Bitcoin mining economics showed unusual strength on April 23, 2026, as all 14 top ASIC miners tracked in current profitability data remained in positive territory at an electricity rate of $0.04 per kilowatt-hour. The key driver was a Bitcoin hashprice of $36.46 per petahash per second, a metric that reflects the daily revenue generated per unit of hashpower.
Even with network difficulty still elevated, modern-generation mining hardware continued to produce positive daily returns under low-cost power conditions. Based on the profitability figures cited in the source data, the machines in this group were generating between $12.73 and $31.62 per day after electricity costs, highlighting how strongly efficiency and infrastructure now shape mining outcomes.
Bitmain and MicroBT Lead the Profitability Rankings
The most profitable model in the lineup was Bitmain’s Antminer S23 Hydro 3U, which posted an estimated $31.62 in daily profit. Released in January 2026, the unit is rated at 1.16 PH/s with a power draw of 11,020 watts, implying an efficiency of around 9.5 J/TH. Bitmain also specifies that the unit operates with three-phase 380–415V power and is designed for hydro-cooling deployments.
In second place was the MicroBT Whatsminer M79S, with an estimated $29.91 per day in profit. That machine, launched in December 2025, is rated at 1.35 PH/s and consumes 20,000 watts, translating to an efficiency of roughly 14.81 J/TH. While less efficient than the top Bitmain model on a joules-per-terahash basis, it remains highly profitable at the current hashprice because of its scale and output.
Another notable entry was Bitdeer’s Sealminer A4 Ultra Hydro, which had not yet launched at the time of the report but was still included based on its published specifications. Scheduled for release in May 2026, the machine is listed at 886 TH/s with a power draw of 8,372 watts and an efficiency of 9.45 J/TH. At the prevailing hashprice, it would theoretically produce $24.20 per day.
Profitability Spread Shows Strength Across the Newest Fleet
Beyond the leaders, the rest of the ranking showed that profitability remained broad-based among newer, enterprise-grade machines. Bitmain’s Antminer S23e Hydro 2U, launched in April 2026, was estimated to earn $23.17 per day on specifications of 865 TH/s and 8,650 watts. The Antminer S21e XP Hydro 3U, an older January 2025 model, still held up with $20.56 in daily profit, indicating that some prior-generation hydro miners continue to compete effectively.
MicroBT’s Whatsminer M79 followed with $19.55 per day, while Block’s Proto Rig came in at $18.28 per day. The Proto Rig stood out not because it ranked near the top, but because it was the only air-cooled machine in the 14-unit list. According to the specifications referenced, it delivers 819 TH/s at 12,000 watts, and its design includes hot-swappable hashboards with rack-level repair times under 90 seconds. The manufacturer also says the unit is immersion-ready.
The remainder of the list included Bitdeer Sealminer A4 Pro Hydro at $17.62 per day, Bitdeer Sealminer A3 Pro Hydro at $16.09, MicroBT Whatsminer M7DS at $15.91, Bitmain Antminer S23 Hyd at $15.81, MicroBT Whatsminer M7D at $14.23, Bitmain Antminer S21 XP+ Hydro at $12.91, and MicroBT Whatsminer M73S+ at $12.73. While the spread between first and last place was meaningful, the bigger takeaway was that every machine in the sample remained above break-even at the stated power rate.
Liquid Cooling Dominates the Current Generation
One of the clearest structural themes in the data is the dominance of water-cooled and immersion-oriented mining hardware. Out of the 14 machines listed, 13 require hydro-cooling or immersion infrastructure according to manufacturer specifications. That leaves only one air-cooled model in the entire profitability group, underlining how quickly thermal management has become central to next-generation mining economics.
This trend is not only about reducing temperatures. It also reflects the industry’s push toward denser rack deployments, improved uptime, better energy utilization, and more stable performance at high power levels. Machines such as the Antminer S23 Hydro 3U, S23e Hydro 2U, and Bitdeer’s Sealminer A4 series show how hardware makers are increasingly optimizing for enterprise-scale mining environments rather than smaller standalone operators.
The competition is also sharpening around efficiency. Bitdeer’s advertised 9.45 J/TH for the Sealminer A4 Ultra Hydro was highlighted in the source material as a standout figure, signaling how close the race has become among major manufacturers including Bitmain, MicroBT, and Bitdeer.
Why the Current Window May Not Last
Despite the strong snapshot, mining profitability remains highly sensitive to a narrow set of variables. The current positive margins depend heavily on low electricity costs, elevated hashprice, and access to modern efficient ASIC fleets. Any major shift in those conditions could quickly reorder the profitability table.
If electricity prices rise above the $0.04/kWh assumption used in the calculations, lower-ranking machines would likely see margins compress first. Likewise, if Bitcoin’s price weakens or if network growth pushes difficulty materially higher, the revenue earned per unit of hashpower could fall. Under those circumstances, machines that currently appear comfortably profitable could lose their edge rapidly.
Still, as of the date covered in the report, the economics were clearly working in miners’ favor. A relatively strong hashprice, combined with the latest generation of hydro-cooled equipment, created a rare moment in which scale, efficiency, and timing aligned. For operators with access to low-cost energy and appropriate cooling infrastructure, the April 2026 environment represented one of the more favorable conditions seen in recent mining cycles.