Bitcoin Mining Enters the Zetahash Era Amid Tightening Profitability

In late 2025, Bitcoin mining reached a significant milestone. A report by GoMining reveals that the Bitcoin network surpassed a computing power of 1 zetahash per second, marking the dawn of the zetahash era.
However, even as the network's hashrate peaked, miner profitability took a downward turn. The result is a mining industry that is increasingly larger, more industrialized, and more susceptible to price fluctuations than it has been during this current cycle.

Key Takeaways

Bitcoin's network has surpassed 1 zetahash per second, indicating robust growth.
Despite expanding hashrate, miner revenue has sharply declined, hinging more on Bitcoin pricing than ever.
Transaction fees have offered minimal relief since the halving, contributing to the strain on miner economics.
The hashprice has reached historical lows, affecting profit margins across the industry.
Shutdown prices for miners reveal economic triggers that could influence Bitcoin's market behavior in the future. The $70,000 price point is crucial for many miners' profitability.

Bitcoin mining has transitioned into a new phase.

The 2025 Bitcoin Mining Market Review delves into the evolving economics of Bitcoin mining over the past year. It discusses how persistent hashprice pressure has exposed vulnerabilities within the sector, and examines why factors such as scale, power strategy, and capital structure have become critical for miners in this new environment.

Hashrate Rises to New Heights as Mining Scales Up

The recently released report indicates that Bitcoin’s network maintained a consistent average hashrate of over 1 ZH/s over a period of seven days. This growth signifies a structural change rather than a short-lived increase. It is a result of significant upgrades in hardware, the establishment of new data centers, and the expansion of industrial operations. The mining landscape has shifted dramatically and is no longer primarily occupied by small players; it now operates more like an energy infrastructure system.

As a direct consequence, competition for block rewards has intensified considerably.

Network Hashrate Annual Growth. Source: GoMining

Decrease in Revenue Per Miner Despite Hashrate Growth

Even as the hashrate has expanded, the revenue per computing unit has fallen to one of the tightest ranges recorded. The report notes that miner earnings are becoming increasingly reliant solely on Bitcoin’s price and mining difficulty. Other support mechanisms, such as spikes in transaction fees and previous higher block subsidies, have diminished.

This situation forces miners into operating with thinner profit margins, despite increased capital and power usage. Evidence of this is seen in the Bitcoin mempool, which experienced complete clearance multiple times in 2025 for the first time since April 2023.

Mempool was Cleared on Multiple Occasions in 2025. Source: Mempool.space

Such a phenomenon indicates that the Bitcoin network was relatively inactive, leading to immediate transaction clearances even at minimal fees. Consequently, miners had to depend almost entirely on Bitcoin’s price and block subsidies for revenue.

Minor Relief from Transaction Fees After the Halving

The dynamics following the halving event exacerbated the pressure faced by miners. With the block subsidy reduced to 3.125 BTC, transaction fees did not compensate for the lost revenue. The report reveals that fees constituted less than 1% of the total block rewards for the majority of 2025.

This situation left miners' financials directly vulnerable to fluctuations in Bitcoin's price, diminishing internal stabilizers.

Throughout 2025, Transaction Fees Accounted for Less Than 1% of Total Block Rewards. Source: GoMining

Hashprice Dips as Margins Remain Under Pressure

The pressure on miners is clearly shown in the hashprice— which is the daily revenue generated per unit of hashrate. The report indicates that hashprice plummeted to an all-time low of nearly $35 per petahash per day in November and continued to stay weak as the year ended. The hashprice closed the quarter at approximately $38, significantly below historical averages.

This market condition leaves minimal room for operational mistakes.

Bitcoin Hashprice Continued to Fall over the Past Year. Source: GoMining

Shutdown Prices Create Economic Triggers

Recent data regarding miner shutdown prices supports these findings. With current mining difficulty and electricity costs around $0.08 per kWh, commonly used S21-series miners face breakeven costs between $69,000 and $74,000 per BTC. Selling below this range could halt many operations from generating profits.

More efficient, high-performance miners can remain sustainable even at lower prices, but mid-tier miners are under immediate threat.

Most Bitcoin Miners have a Shutdown Price Below $70,000. Source: Antpool

Implications for Bitcoin's Price

These conditions do not create a definitive price floor. Markets can fluctuate below mining breakeven levels. However, it establishes a behavioral threshold. If Bitcoin remains below these critical shutdown points, weaker miners might resort to selling reserves, shutting down machinery, or decreasing their market presence.

In a market already facing tight liquidity, such actions could magnify volatility. While Bitcoin mining has become more robust and industrialized, this expansion brings a heightened sensitivity to price changes. As the hashrate grows and fee incomes diminish, the importance of price stability for miners significantly increases. This makes levels like $70,000 crucial—not because of market trends, but due to the underlying cost structure of the mining network.