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Miner economics

9 min read

Bitcoin mining is a competitive industry whose firm-level economics center on one equation: revenue (block subsidy + transaction fees, per terahash per day) versus costs (electricity at ~70-85% of opex, hardware capex amortized over 2-4 years, hosting/facility opex, labor, financing). Profitability is measured in hash price ( 0.025-0.035/kWh all-in; retail-power or grid-tied operations at 0.10-0.20+/kWh. The post-2030 question — whether fee revenue alone can sustain miner security as subsidy approaches zero — is engaged in Long-term security budget.

Why this note matters

Mining is the physical-economic substrate of Bitcoin’s security model. Without miner profitability sufficient to sustain a globally-distributed competitive industry, the network’s security guarantees weaken. Understanding miner-economic fundamentals — revenue sources, cost structure, profitability frameworks, post-halving dynamics, the long-term-security-budget question — is the precondition for evaluating mining-industry trajectory, post-halving cycle behavior, and the broader fee-market sustainability question.

This section treats firm-level mining economics empirically. The protocol-level subsidy mechanism is in The halving - Mechanism (Economics); the long-term-security-budget critique is in Long-term security budget (Criticisms); public-miner-specific dynamics are in Public Bitcoin miners landscape.

Revenue: subsidy plus fees

A miner’s gross revenue per block is the block subsidy plus the sum of transaction fees in the block. As of 2026, post-2024-halving:

  • Block subsidy: 3.125 BTC per block (halving to 1.5625 BTC at block 1,050,000 in spring 2028)
  • Transaction fees: variable, typically 0.1-0.5 BTC per block in steady state, with spikes to 1-3+ BTC during high-fee periods

The subsidy trajectory:

EpochBlocksSubsidyYears
00–209,99950 BTC2009-2012
1210,000–419,99925 BTC2012-2016
2420,000–629,99912.5 BTC2016-2020
3630,000–839,9996.25 BTC2020-2024
4840,000–1,049,9993.125 BTC2024-2028 (current)
51,050,000–1,259,9991.5625 BTC2028-2032
…………

The subsidy contribution declines exponentially; by the 2032 halving, subsidy will be 0.78125 BTC per block — meaningful but declining. By the 2036 halving, the subsidy will fall to ~0.4 BTC per block.

Fee revenue dynamics:

  • Steady-state fees (2016-2022 typical): 5-15% of total miner revenue.
  • High-fee episodes (Ordinals 2023-2024; protocol-stress events): 30-50%+ of revenue during specific epochs.
  • Post-2024 Ordinals trajectory: Ordinals-related transaction volume has remained meaningfully elevated; fee revenue contribution has been higher post-2024 than pre-2024 baseline.

The total per-block revenue varies. A typical post-2024 block might earn 3.3-3.6 BTC (subsidy + fees); a high-fee block might earn 4-5+ BTC. Multiplied across 144 expected blocks per day and across the network’s total hashrate, this gives the network’s daily revenue picture.

Cost structure

Mining cost structure breaks down approximately as:

  • Electricity: 70-85% of opex for a typical mining operation. The principal variable input.
  • Hardware capex (amortized): 10-15% of effective opex when amortized over 2-4 year ASIC useful-life.
  • Facility and operational overhead: 5-10% (cooling, infrastructure maintenance, networking, security, labor).
  • Financing costs: variable; for debt-financed operations adds 2-5% effective cost; public miners often have substantial debt service.

Electricity cost ranges:

  • Sub-$0.03/kWh (industrial-stranded): gas-flaring operations, certain hydro overrun arrangements, demand-response curtailment contracts. Few miners operate at these rates.
  • 0.05/kWh (industrial-cheap-power): Most large institutional mining in Texas, Kazakhstan, certain US states, Paraguay, Ethiopia, similar jurisdictions.
  • 0.08/kWh (grid-tied institutional): Higher-cost industrial; some US states; many European operations.
  • 0.15/kWh (retail/small commercial): Smaller-scale operations; home mining at residential rates.
  • $0.15+/kWh (residential premium): Many residential and consumer mining contexts.

The cost-of-production calculation. For a representative deployed ASIC at ~15 J/Th (2026 flagship S23-generation hardware reaches ~10 J/Th) at $0.04/kWh all-in:

  • Per-day power consumption per TH: 15 J/Th × 86400 sec/day = 1.296 MJ/TH/day = 0.36 kWh/TH/day
  • Per-day power cost per TH: 0.36 × 0.0144/TH/day
  • Adding ~25% for hardware amortization and overhead: ~$0.018/TH/day all-in cost
  • All-in cost per Bitcoin mined (at current hashrate): ~45,000 per BTC

The all-in cost ranges substantially across the industry. Public miners typically report all-in production costs of 80,000 per BTC depending on power costs and capex amortization assumptions. Low-cost operators (stranded-energy, sovereign programs) may operate at 40,000 per BTC.

The hash-price framework

Hash price ($/TH/day) is the principal operational metric. Calculated as:

Hash price = (Subsidy + Fees per block) × 144 blocks/day × BTC price / Network hashrate (TH)

For a miner, profitability requires hash price > all-in cost per TH/day. Typical thresholds:

  • **Modern ASICs at sub-20-30/TH/day; comfortable profit at $50+/TH/day.
  • Modern ASICs at 0.08/kWh: break-even hash price ~80+/TH/day for healthy margin.
  • Older ASICs (25-30 J/Th): break-even hash price ~$60-80/TH/day at cheap power; older ASICs are unprofitable in most jurisdictions at typical hash-price levels.

Hash-price-vs-spot relationship. Hash price moves with both Bitcoin price (numerator) and hashrate (denominator). High-price/low-hashrate periods (post-capitulation, pre-halving) are optimal for mining; low-price/high-hashrate periods (post-halving, pre-capitulation) compress margins.

Post-halving cycle dynamics

Halvings cut subsidy in half instantly. Empirical post-halving patterns:

  1. Immediate revenue compression (overnight): all miners’ subsidy revenue halves.
  2. Capitulation phase (weeks to months): higher-cost miners become unprofitable at current hash price; they reduce or stop operations; their hashrate goes offline.
  3. Difficulty adjustment (every ~2 weeks): as hashrate exits, difficulty adjusts downward; remaining miners’ revenue per TH recovers partially.
  4. Equilibrium: a new steady state emerges with lower total hashrate (initially) and surviving-miner hash share growing.
  5. Capital re-entry (months to year+): as Bitcoin price typically appreciates through the halving cycle, hash price recovers and capital flows back into the industry.

Capitulation severity varies by halving:

  • 2024 halving: moderate capitulation; older S19-generation ASICs were the primary exits.
  • 2020 halving: capitulation complicated by COVID-era operational disruptions.
  • 2016 halving: mild capitulation; the network was growing rapidly.
  • 2012 halving: limited capitulation; the network was still in early development.

The capitulation-to-fee-market transition. Each halving steps the network closer to the post-subsidy regime where transaction fees must sustain miner economics. The 2028 halving will halve subsidy to 1.5625 BTC; the 2032 halving to 0.78125 BTC. By approximately 2032-2036, fee revenue and subsidy will be roughly comparable; by 2040-2044, fee revenue will dominate.

The long-term-security-budget question

The principal long-term miner-economics concern is whether transaction fees alone can sustain sufficient miner revenue to maintain network security after the subsidy approaches zero (~2032-2036 transition; subsidy effectively negligible by 2050):

  • Optimistic framing: as Bitcoin’s monetary use cases expand, transaction-fee volume will grow to compensate for declining subsidy. Lightning channel-open and channel-close transactions, high-value settlement transactions, and protocol upgrades like covenants enabling new use cases all increase fee revenue.
  • Pessimistic framing: if fee revenue does not grow proportionally to declining subsidy, miner-economic margins compress, hashrate declines, and the network’s security model weakens. This is the substantive analytical critique engaged in Long-term security budget.
  • Empirical uncertainty: the post-2030 fee-market trajectory depends on factors that cannot be reliably forecast: Bitcoin price appreciation, transaction-throughput evolution, Layer-2 dynamics affecting on-chain transaction volume, regulatory environment.

The miner-economics framing of this question. Miners face the fee-market sustainability question directly. Public miners’ long-term strategic planning (HODL strategies; expansion vs maintain; AI-infrastructure pivots) is shaped by their fee-market expectations. Companies like Marathon, Riot, and CleanSpark publish strategic analyses that engage this question explicitly.

Tradeoffs and design choices

Subsidy vs fees as security funding. The Satoshi-era design relied on subsidy as the principal security-funding mechanism; the long-term design relies on fees. The transition is gradual but the empirical sustainability is contested. See Long-term security budget for the substantive engagement.

Owned hardware vs hosted hardware. Self-mining captures full margin but requires capex and operational capability; hosted mining reduces capex at the cost of hosting fees and counterparty risk. Different operator scales favor different models.

HODL strategies vs distribute-immediately. Some public miners HODL substantial portions of mined Bitcoin (MARA, RIOT historically); others distribute immediately for operational cash flow. The HODL strategy is essentially a treasury-management decision on top of the mining business.

Debt financing vs equity financing. Public miners have used various mixes of debt and equity to finance hardware purchases. Debt amplifies upside in bull markets but creates servicing pressure in bear markets; equity dilution is the alternative trade-off.

AI-infrastructure pivot vs Bitcoin-only operations. Some public miners have pivoted compute capacity to AI infrastructure (CoreWeave-style hosting). AI revenue is higher per kWh than Bitcoin mining at current AI demand; the trade-off is operational complexity and Bitcoin-mission-drift concerns. See Mining pool centralization and the AI infrastructure pivot for the controversy-level engagement.

Substantive analytical critique of long-term miner economics lives in Long-term security budget. The structural concerns about mining concentration are in Mining centralization concerns.

Open questions for further development

  • What is the realistic post-2030 fee-revenue trajectory? This is the principal critical-path question for the industry.
  • How does miner economics evolve as the AI-infrastructure pivot continues? Public miners increasingly diversify revenue beyond Bitcoin mining; the long-run dynamics produce mixed Bitcoin-and-AI businesses.
  • What is the appropriate hash-price-derivatives market? Liquid hash-price-forward markets would enable miner hedging; current markets are limited.
  • How does the cost-of-production-floor framework hold up across halvings? Empirical floors at the marginal-cost-of-production level have been observable historically; whether the pattern persists post-2028 is uncertain.
  • What is the equilibrium between public-miner and private-miner sectors? Public miners have grown to substantial network share; private miners (especially sovereign and energy-company miners) remain significant. The trajectory is unsettled.

Canonical sources for this note

  • Hashrate Index (Luxor Technology) — hash-price tracking and miner-economics analytics
  • Public-miner quarterly filings (Marathon, Riot, CleanSpark, Cipher, others) — most-detailed available cost-and-revenue data
  • Equity analyst reports on the public-mining sector (Cantor, Stifel, Compass Point)
  • Long-term security budget — substantive critique of fee-market sustainability
  • The Bitcoin Standard - Saifedean Ammous — Chapter 9 mining-economics engagement
  • Broken Money - Lyn Alden — empirical-macro framework

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