AI Is Squeezing Bitcoin Miners at Premium Power Sites

Bitcoin mining is becoming harder to justify at the biggest, most expensive sites as AI operators compete for premium power, land and infrastructure. According to BeInCrypto, Core Scientific’s self-mining gross margin was negative 56% in Q2, while its data-center colocation unit generated nearly $80 million in gross profit; at TeraWulf, HPC leasing accounted for about 71% of quarterly revenue. The article says hashrate has eased from above 1.1 ZH/s in October 2025 and difficulty fell 11.16% in February 2026 and 10.09% in June.