Bitcoin Mining Profitability Squeezed as Network Difficulty Drops 7% Amid Price Decline

The Hardware/Software Landscape

November 2019 presents a challenging operating environment for Bitcoin miners worldwide. The Bitcoin price, which peaked near $14,000 in June, has retreated to the $9,324 range, placing significant pressure on mining operations that expanded aggressively during the first half of the year. The hardware ecosystem is in transition, with a generational shift underway from older Antminer S9 units — which dominated the market during the 2017-2018 era — to newer, more efficient models like the Antminer S17 Pro and Whatsminer M20S.

This transition is not happening evenly across the industry. Large-scale mining farms in China, particularly those located in Sichuan and Xinjiang provinces with access to electricity rates as low as $0.03 per kilowatt-hour, continue to operate profitably even at current prices. These facilities have been rapidly deploying next-generation hardware, taking advantage of bulk purchasing agreements with manufacturers. Smaller operations and individual miners in regions with higher electricity costs, however, face a very different reality. Many are finding that their older S9-class machines are now operating at a loss, forcing difficult decisions about whether to continue mining, invest in upgrades, or shut down entirely.

The software infrastructure supporting mining operations has also matured considerably. Automated pool switching algorithms, real-time profitability calculators, and integrated farm management dashboards have become standard tools for serious mining operations. These tools allow miners to optimize their operations in real-time, switching between mining pools based on payout structures and adjusting power consumption in response to electricity pricing and Bitcoin market movements.

Hashrate and Difficulty

The most significant technical development in Bitcoin mining during November 2019 is the approximately 7 percent drop in mining difficulty — one of the larger downward adjustments in recent months. This adjustment is a direct consequence of hashrate leaving the network as unprofitable miners power down their equipment. The network hashrate has declined from its mid-year peaks, settling around 92 EH/s, which represents a meaningful reduction from the 100+ EH/s levels seen during the June price rally.

The difficulty adjustment mechanism, one of Bitcoin’s most elegant design features, ensures that block production remains steady at approximately one block every ten minutes regardless of how much computing power is dedicated to mining. When hashrate decreases, the network automatically reduces difficulty to maintain the target block time. This adjustment occurs every 2,016 blocks — roughly every two weeks — and serves as a barometer of mining industry health. A 7 percent decline signals meaningful stress in the mining ecosystem.

The current difficulty hovers around 12.9 trillion (12.9T), reflecting the reduced competitive intensity on the network. For miners who remain operational, this lower difficulty means that their hardware produces a proportionally larger share of the daily block rewards. At current prices near $9,324 per BTC and a block reward of 12.5 BTC, approximately $11.65 million in new Bitcoin is created each day, distributed among the miners who continue to secure the network.

Profitability Metrics

Mining profitability in November 2019 follows a clear hierarchy based on hardware efficiency and electricity costs. At the top of the profitability curve are operations running the latest-generation ASICs with electricity costs below $0.04 per kWh. These miners are generating healthy returns even at the current Bitcoin price, with estimated profit margins of 30-50 percent after accounting for all operational costs including hardware depreciation.

In the middle tier are miners running a mix of current and previous-generation hardware with moderate electricity costs ($0.05-0.06 per kWh). These operations are roughly break-even to modestly profitable, generating enough revenue to cover operational costs but struggling to build reserves for the upcoming halving. Many of these miners are in a holding pattern, waiting for either a price recovery or further difficulty drops to improve their margins.

At the bottom are miners running older hardware — primarily Antminer S9 and similar models from 2017-2018 — with electricity costs above $0.07 per kWh. For these operators, mining at current prices is either marginally unprofitable or barely covering electricity costs, with no allowance for hardware replacement or expansion. The 7 percent difficulty drop provides some temporary relief, but the structural challenge remains: their hardware is becoming obsolete, and the May 2020 halving will make their position untenable without significant capital investment in new equipment.

The breakeven Bitcoin price varies dramatically across these tiers. For the most efficient operations, the breakeven is estimated at $5,000-6,000 per BTC. For mid-tier operations, it ranges from $8,000-9,000. And for those running older hardware at higher electricity costs, the breakeven is $10,000 or more — meaning they are currently mining at a loss.

Environmental Impact

The environmental dimension of Bitcoin mining continues to attract attention from researchers, regulators, and the public. A November 2019 study published in Economics Letters titled “The Bitcoin Mining Breakdown: Is Mining Still Profitable?” examined the profitability question through the lens of energy costs, highlighting the environmental externalities that come with the network’s energy consumption. The research noted that the sharp drop in Bitcoin prices, after years of a mounting arms race in mining hardware investment, has created conditions where the environmental cost of mining is increasingly scrutinized against its economic output.

The geographic distribution of mining operations plays a crucial role in the environmental impact discussion. Mining operations in regions powered primarily by coal face justified criticism for their carbon footprint, while those in areas with abundant renewable energy — particularly hydroelectric power in Sichuan, geothermal in Iceland, and nuclear in some regions — operate with significantly lower environmental impact per unit of computing power. As older, less efficient hardware is retired in favor of newer models that deliver 2-3 times the hashrate per watt, the energy efficiency of the network as a whole improves.

The upcoming halving is expected to accelerate this efficiency transition. When the block reward is cut in half, only the most energy-efficient operations will remain viable, which could paradoxically lead to a greener mining ecosystem even as it concentrates mining power among fewer, larger operators.

Strategic Outlook

The strategic landscape for Bitcoin miners heading into late 2019 is defined by preparation for the May 2020 halving. Well-capitalized mining operations are using the current period of lower prices to accumulate next-generation hardware at discounted prices, positioning themselves for the post-halving environment when older equipment will be forced offline en masse. The miners who emerge from the halving with the most efficient fleets and lowest cost structures will capture disproportionate market share.

The ASIC manufacturing industry’s competitive dynamics add another layer of complexity. With MicroBT challenging Bitmain’s dominance and Canaan entering the public markets, miners have more hardware choices than at any point in Bitcoin’s history. This competition is driving innovation and putting downward pressure on hardware prices, which benefits mining operators who time their purchases strategically.

For the broader Bitcoin ecosystem, the current mining dynamics are healthy. The difficulty adjustment ensures that the network remains secure regardless of price action, while the pressure on inefficient miners drives the constant improvement in the network’s overall energy efficiency. The November 2019 difficulty drop is not a crisis — it is the network functioning exactly as designed, pruning the least efficient operators and rewarding those who have built sustainable, well-managed mining operations.

Disclaimer

This article is for informational purposes only and does not constitute financial or investment advice. Mining profitability calculations are estimates based on publicly available data and may vary significantly based on individual circumstances. Readers should conduct their own due diligence before making any investment decisions related to cryptocurrency mining.