Bitcoin’s network hash rate has fallen roughly 8% over the past week to approximately 920 EH/s, as rising energy costs linked to the Iran conflict squeeze mining profitability and force less-efficient rigs offline. The decline is setting up one of the largest negative difficulty adjustments in five years, while BTC itself trades below $72,000 amid broader market fear.
Bitcoin Hash Rate Is Dropping, Here Are the Numbers
The Bitcoin network’s total hash rate has slid to around 920 EH/s, representing an 8% decline over the past seven days. The drop follows what was already one of the largest hash rate declines on record in mid-February 2026.
The next difficulty adjustment is projected to fall between 8% and 10%, which would mark one of the steepest downward corrections the network has seen in five years. Difficulty adjustments occur roughly every two weeks and automatically recalibrate to reflect changes in mining participation.
Miner stress was already visible before this latest decline. USD hashprice, which measures daily revenue per petahash, hit an all-time low of $27.89/PH/s/day on February 24, 2026. Monthly hashprice dropped 17.9% month-over-month, signaling sustained margin compression across the industry.
Bitcoin traded at roughly $71,517 at time of writing, down 3.26% over 24 hours. That puts BTC approximately 43% below its all-time high of $126,080, set in October 2025. The sustained ETF inflows seen earlier this week have done little to offset the selling pressure from miners liquidating BTC to cover rising operational costs.
How the Iran War Is Squeezing Bitcoin Miners
The Iran-U.S. conflict has driven energy prices higher globally, creating direct pressure on mining operations in energy-sensitive regions. An estimated 8% to 10% of global Bitcoin mining operates in markets where electricity costs correlate with oil price movements.
However, the full picture is more nuanced than the headline suggests. According to Luxor Technology’s Hashrate Index, roughly 90% of global Bitcoin hashrate operates in countries where electricity prices have little correlation with crude oil prices. The majority of large-scale mining sits in North America, parts of Latin America, and Nordic regions with stable power contracts.
Analysts at The Block have argued that the Iran oil shock is “more likely to affect Bitcoin miners through BTC price than through direct energy costs.” As energy commodity markets react to the conflict, the knock-on effect on risk assets like Bitcoin may be the bigger threat to miner balance sheets than electricity bills alone.
Iran itself has historically been a significant mining hub, leveraging subsidized energy to power operations. The country operates a $7.8 billion crypto shadow economy that uses Bitcoin mining as a mechanism to bypass global sanctions. Direct military conflict now puts that mining infrastructure under threat, potentially removing additional hashrate from the network.
Publicly traded miners have responded to margin compression by diversifying into AI and high-performance computing workloads, which generate approximately three times the revenue per megawatt compared to Bitcoin mining. By October 2025, public miners had announced over $65 billion in AI and HPC contracts. That pivot, while strategically sound, has increased BTC sales by miners needing to fund infrastructure conversion, creating an additional headwind on price.
What Miners and the Network Face Next
Bitcoin’s difficulty adjustment mechanism is designed to handle exactly this scenario. When hash rate drops, difficulty falls to make mining easier and more profitable for remaining participants, eventually incentivizing new capacity to come online.
The projected 8% to 10% difficulty drop, expected within the next several days, should provide immediate relief to miners still operating. After the difficulty adjustment, the same hardware earns proportionally more BTC per unit of energy consumed.
Historical precedent offers some reassurance. When China banned Bitcoin mining in mid-2021, the network lost roughly 50% of its hash rate in a matter of weeks. The full recovery took approximately five months, with miners relocating to the United States, Kazakhstan, and other jurisdictions.
The current decline is far smaller in scale, but the underlying dynamics are different. Rather than a single regulatory event, miners face a combination of record-low hashprice, geopolitical energy disruption, and a BTC price sitting 43% below its peak. The Fear and Greed Index reads 26, firmly in “Fear” territory, with 24-hour trading volume at $42.64 billion.
The concrete signal to watch is the upcoming difficulty epoch. If hash rate stabilizes near 920 EH/s after the adjustment, it would suggest the worst of the miner shakeout is over. If it continues to slide, the network may be headed for a second consecutive major difficulty drop, something not seen since the 2021 China exodus.
Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.