The Bitcoin Halving Aftermath: What Miners Are Doing Next

The fourth Bitcoin halving — which reduced the block subsidy from 6.25 BTC to 3.125 BTC — hit the mining industry on April 20, 2024. Eighteen months later, the dust has settled. Miner capitulation, which reached its peak in Q3 2024 as inefficient operators were forced to liquidate holdings and power down rigs, has given way to something unexpected: a quiet consolidation of hashpower into the hands of the most efficient operators the network has ever seen.

The numbers are striking. According to Glassnode data, the top 10 mining pools now control 74% of total hash rate — up from 62% pre-halving. But this isn't the centralization story it appears to be at first glance. The composition of those pools has shifted dramatically away from Chinese coal-powered farms toward North American and Middle Eastern operations running on stranded and renewable energy sources.

The Efficiency Arms Race

The halving didn't just cut rewards — it permanently raised the minimum viable efficiency threshold. Pre-halving, miners running S19 series rigs at 30–34 J/TH could operate profitably at $0.05/kWh electricity. Post-halving, the break-even point dropped to roughly $0.035/kWh for the same hardware. The result: a massive hardware refresh cycle.

Bitmain's S21 Pro (18 J/TH) and MicroBT's Whatsminer M66 (17.5 J/TH) are now the workhorses of the network. Older S19 and M30 series rigs have been almost entirely displaced — either sold to regions with sub-$0.02/kWh power or scrapped entirely. The average efficiency of the network has improved by 28% since the halving.

This efficiency gain has a second-order effect: even as hash rate has climbed to new all-time highs (currently ~680 EH/s), the network's energy consumption per transaction has actually declined. The Bitcoin network is now approximately 24% more energy-efficient per transaction than it was in April 2024.

The Geographic Reshuffle

Perhaps the most significant trend is the geographic redistribution of mining. Three regions are emerging as the new centers of gravity:

Texas (ERCOT): Now the largest single mining jurisdiction globally, hosting approximately 28% of total hash rate. The state's unique combination of abundant wind/solar, a deregulated electricity market, and demand-response programs that pay miners to curtail during peak demand has created the most favorable regulatory environment in the world.

UAE and Oman: Middle Eastern hash rate has grown 4× since the halving. Sovereign wealth funds are directly investing in mining infrastructure as part of broader economic diversification strategies. The region now accounts for 12% of global hash rate.

Ethiopia: The Grand Ethiopian Renaissance Dam has created a surplus of hydroelectric power that the government is actively marketing to Bitcoin miners. Ethiopia now hosts approximately 4% of global hash rate — a figure that was effectively zero two years ago.

What the On-Chain Data Tells Us

Miner behavior on-chain reveals a shift in strategy. Pre-halving, miners were net sellers of approximately 60% of mined BTC within 30 days. Post-halving, that figure has dropped to 38%. Public miners in particular — Marathon, Riot, CleanSpark, and Core Scientific — are increasingly holding BTC on their balance sheets rather than selling into the market.

This has implications for sell pressure. At current issuance rates (approximately 450 BTC/day), the daily miner sell pressure has dropped from roughly 270 BTC/day pre-halving to approximately 170 BTC/day. Combined with accelerating ETF inflows — which are now absorbing approximately 350 BTC/day net — the supply-demand dynamics have become acutely favorable.

The Puell Multiple, a metric that compares daily coin issuance to its 365-day moving average, has been oscillating in the 0.8–1.2 range since the halving. Historically, this level has been associated with accumulation phases that precede significant price appreciation. The metric has not entered "overheated" territory (>4.0) since the 2021 bull market.

The AI x Mining Crossover

An unexpected development is the convergence of Bitcoin mining and AI compute. Several major miners are now repurposing existing infrastructure to serve AI inference and training workloads during periods of low mining profitability. Core Scientific's deal with CoreWeave — a $3.5B, 12-year contract — set a precedent that the industry is now racing to replicate.

This dual-use model changes the valuation framework for mining companies. Rather than being pure-play commodity producers, they are increasingly being priced as infrastructure platforms with optionality across two of the largest compute markets in the world. The market is beginning to reflect this: the MVIS Global Digital Assets Mining Index has outperformed BTC by 18% over the trailing six months.

Risks on the Horizon

Three risks deserve attention. First, the concentration of hash rate in Texas — while not a single point of failure — creates regulatory dependency on ERCOT and the Texas PUC. Second, the next halving in 2028 will reduce the block subsidy to 1.5625 BTC. At that point, transaction fees must become a material and sustained revenue source for mining to remain economically viable. Third, the growing integration of AI compute with mining infrastructure introduces counterparty risk that is structurally different from the permissionless Bitcoin protocol.

Despite these risks, the data is clear: the post-halving mining industry is more efficient, more geographically diverse, and more strategically positioned than at any point in Bitcoin's history. The "halving kills miners" narrative has once again been disproven. What it actually does — as it has done every four years since 2012 — is force the industry to evolve. This cycle's evolution is the most dramatic yet.