Bitcoin Hashrate Drops to 3-Week Low as Network Power Retracts
Bitcoin hashrate fell to a three-week low of 915.8 EH/s on September 26 as mining operators shed treasury holdings and redirected power capacity away from proof-of-work validation. Data covering the seven-day period from September 20 through September 26 shows the network moving average lost approximately 34.86 million TH/s from the previous week. This decline pushed computing power securing the chain down to levels last observed on September 3. Daily readings on public pool dashboards moved below one zettahash per second during multiple late-September sessions after surging above that milestone earlier in the month. On September 25, single-day estimates settled near 954 EH/s, down sharply from 984 EH/s recorded just 24 hours prior. These short-term contractions fit into a broader structural retreat from the record high established in late 2025. Total network computational capacity remains 22% to 24% below its historical peak, marking what industry executives categorize as Bitcoin's first dedicated hashrate bear market. Short-term variance in block propagation times, local power curtailment, and equipment turnover accounts for daily swings, but the persistent downward trajectory proves that marginal operators face tightening operational margins across competing mining facilities worldwide.
Miner Reserves Shrink by 1,530 BTC Amid Capital Reallocation
The drop in computing power coincides with renewed liquidation pressure from mining entity balance sheets. Tracked miner wallet reserves decreased by 1,530 BTC over the same seven-day evaluation period, bringing total collective holdings down to 1,192,766 BTC. This outflow marks a sharp reversal from early September, when miner treasuries expanded by 261 BTC to reach 1.1919 million BTC. Outflows from designated miner wallets do not automatically indicate immediate spot market dumping, as coins frequently transition into institutional custody, derivative collateral arrangements, or OTC lending desks. However, individual corporate disclosures confirm that several major public producers are actively selling more than their monthly production to fund corporate transformations, purchase next-generation hardware, and service debt obligations incurred during earlier capital expenditures.
CleanSpark demonstrated this cash-preservation strategy by producing 593 BTC in August while selling 821 BTC over the same timeframe. The company closed August holding 13,703 BTC while maintaining an active operating hash capacity of 38.3 EH/s. Other operators are abandoning mining entirely to capture lucrative high-performance computing contracts. Hyperscale Data completely terminated Bitcoin mining at its Michigan facility on September 1 to retool the infrastructure for artificial intelligence hosting contracts. That strategic pivot saw the firm's total Bitcoin treasury plummet 79%, falling from 1,006 BTC in July down to approximately 215 BTC by late September. As hardware retrofits accelerate across North American data centers, megawatt power capacity previously dedicated to SHA-256 hash generation is permanently leaving the network to support enterprise machine learning operations and high-density cluster hosting.
Power Restrictions and AI Pivots Reshape Mining Operations
Geographic concentration risks and regional infrastructure bottlenecks are compounding hardware retrenchment across international jurisdictions. In Ethiopia, state utility Ethiopian Electric Power reduced electrical supply provided to licensed Bitcoin miners to just 23% of contracted allocations. The utility implemented the severe rationing after hydroelectric power generation fell due to a 20% decrease in water reservoir inflows. The decision severely impacts regional operations, given that Bitcoin mining had previously consumed nearly one-third of Ethiopia's domestic electricity production while generating 35% of the national utility's top-line revenue. With state authorities scheduling a formal operational review in October, further supply cuts remain contingent on seasonal rainfall patterns and grid stability requirements in East Africa.
Puell Multiple Rebounds Ahead of Network Difficulty Adjustment
Despite contracting hardware footprints, miner unit economics recorded a temporary improvement over the final week of September. Bitcoin's Puell Multiple rose by 0.24 over the seven-day window to reach 1.13 on September 26. This metric compares the daily U.S. dollar value of newly created Bitcoin against its 365-day moving average. A value above 1.0 indicates that daily miner issuance revenue is pacing above its one-year historical average. Independent tracking platforms placed the indicator near 1.01 on September 26, evaluating daily block rewards near 450 BTC and total daily miner revenue around $37.8 million. Because the current post-halving block subsidy stands fixed at 3.125 BTC until approximately 2028, revenue expansions rely heavily on spot price appreciation and transaction fee spikes rather than nominal token issuance growth across the network.
Miners are navigating these operational economics while spot prices consolidate below critical technical overhead. The market has struggled to build bullish momentum as broader market liquidity fluctuates following a weekly macro recap of central bank policy shifts and regulatory developments. Spot price action continues testing support around $85,000, where substantial order book liquidity sits on spot exchanges. At the same time, short-term momentum models display negative oscillator momentum, limiting immediate upside expansion for digital assets. The network difficulty algorithm adjusts every 2,016 blocks to enforce target block times regardless of computing retrenchment. Because difficulty recalculates across the complete 14-day cycle rather than reacting to seven-day hash fluctuations, block production timing will remain volatile until the upcoming automated resetting recalibrates unit mining costs across active mining pools.
Will the upcoming difficulty adjustment lower production costs fast enough to halt miner sales before spot prices break below key support?
