Canaan Inc., the Nasdaq-listed Bitcoin miner and ASIC manufacturer, just posted the kind of efficiency numbers that make competitors quietly update their spreadsheets. The company’s North American self-mining fleet hit 17.9 joules per terahash (J/TH) in May 2026, a new record and an 11% improvement compared to a year earlier.

The numbers behind the record

The 17.9 J/TH figure represents a meaningful step forward from the 18.7 J/TH the company reported for its North American non-JV operations in March and April 2026. That’s a roughly 4% improvement in just a couple of months, on top of the broader year-over-year gains.

Globally, Canaan’s average fleet efficiency landed at 23.7 J/TH, reflecting a 13.5% year-over-year improvement.

On the production side, Canaan mined 90 BTC during May and received an additional 24 BTC from customers. That brought the company’s total crypto treasury to approximately 1,867 BTC and 3,952 ETH, a new high-water mark for the firm.

At month’s end, the company reported an installed hashrate of 10.05 EH/s, though the effective operational hashrate sat at 6.47 EH/s. The difference between those two numbers stems from the expiration of a hosting agreement.

Strategic expansion and the Cipher Mining deal

Canaan expanded through a partnership with Cipher Mining, acquiring a 49% stake in West Texas projects. That deal added roughly 4.4 EH/s and 120 MW of capacity to Canaan’s pipeline.

CEO Nangeng Zhang framed the May results as evidence of resilience in a tough market.

What this means for investors

The gap between installed and operational hashrate deserves scrutiny. Having 10.05 EH/s on the books but only running 6.47 EH/s means about 36% of capacity was offline or underutilized at month’s end.

The year-over-year efficiency trajectory is arguably the most important signal in this update. An 11% improvement in North America and 13.5% globally suggests Canaan is deploying newer hardware at a pace that meaningfully moves the needle on fleet-wide performance.