Bitdeer, CleanSpark, BitFuFu, Canaan mined 1,859 BTC in May

Four public bitcoin miners — Bitdeer, CleanSpark, BitFuFu and Canaan — reported a combined 1,859 BTC mined in May while reporting asset sales and investments tied to AI data-center projects, hosting agreements and power constraints. Companies said those factors influenced how much hash power they deployed and prompted some to sell mined bitcoin to fund expansion.

Bitdeer produced 921 BTC in May and reported a self-mining hash rate of 70.2 EH/s and total hash rate under management of 83.1 EH/s. The company’s co-mining business, which runs Bitdeer rigs in third-party data centers, rose to 10.0 EH/s in May from 8.4 EH/s in April, while self-mining capacity remained roughly flat since March. Bitdeer held 171 BTC at month-end, up from 73 BTC in April and down from 1,351 BTC a year earlier, reflecting regular sales to fund its AI buildout. Bitdeer reported AI Cloud annualized revenue near $69 million and utilization of 90%, down from 92%, while adding GPUs and two Nvidia GB300 NVL72 clusters. The firm also warned that power availability at its 570-megawatt Clarington, Ohio site may be affected by litigation involving a neighboring company. CFO Michael Potter framed the AI work as additive to mining.

BitFuFu mined 177 BTC in May. Self-mining output rose to 90 BTC from 32 BTC in April and exceeded cloud-mining output of 87 BTC. Total hash rate fell to 19.5 EH/s from 22.4 EH/s, and power capacity under management declined 14.4% to 346 MW. The company attributed higher uptime to easing power curtailment at facilities in Ethiopia. Chairman and CEO Leo Lu characterized the shift toward self-mining as a deliberate response to current price conditions.

Canaan reported 90 BTC from self-mining plus 24 BTC received from customer payments, bringing its treasury to a record 1,867 BTC and 3,952 ETH. The company operated 6.47 EH/s of its 10.05 EH/s installed hash rate, a shortfall tied to the planned expiration of a hosting agreement. Canaan’s West Texas joint venture produced roughly 45 BTC despite wildfire damage at its Alborz facility; restoration work was described as nearly complete with full operation expected within a week. The company won a contract to supply an 8-megawatt district heating deployment in the Nordic region after a prior greenhouse pilot in Canada. Chairman and CEO Nangeng Zhang emphasized hardware innovation and energy-efficient systems in the company’s heat-reuse efforts.

CleanSpark mined 671 BTC in May at an operational hash rate of 50.0 EH/s, unchanged from February. The company sold 404 BTC at spot prices and 250 BTC through option call exercises, yielding a net increase of 17 BTC in its treasury for the month; CleanSpark reported an average sale price of $79,934 per coin that includes option premiums. The company posted a $224 million mark-to-market loss on its bitcoin holdings during the quarter. CleanSpark is investing in AI data centers in Georgia and Texas and hired Ruben Sahakyan as senior vice president of finance to support development. CEO and Chairman Matt Schultz noted ongoing development of the company’s power pipeline and recent senior hires; he was also named to Texas’s Strategic Bitcoin Reserve committee in late May.

All four updates included specific production, hash-rate and treasury figures alongside disclosures about mining-hosting arrangements, sales and AI-related capital allocation.