How Do I Mine Bitcoin?

By Blockstream Engineering · Last updated June 2026

What You Need Before You Start

Every mining setup, from a single unit in a garage to a warehouse full of machines, requires the same four things, regardless of scale: an ASIC miner, electricity, cooling, and an internet connection.

ASIC Miners

Bitcoin mining left the realm of CPUs, GPUs, and FPGAs years ago. Today, the only hardware competitive enough to mine bitcoin profitably is an Application-Specific Integrated Circuit (ASIC). These machines do one thing: compute SHA-256 hashes as fast as possible.

Current-generation ASICs from manufacturers like Bitmain, MicroBT, and Canaan produce hashrates measured in hundreds of terahashes per second (TH/s) while consuming between 2,000 and 5,500 watts of power. A top-tier machine in early 2026 costs between $2,000 and $10,000 depending on efficiency, generation, and market conditions.

When buying a miner, the metric that matters most is efficiency, measured in joules per terahash (J/TH). A lower J/TH means the machine produces more hashes per watt of electricity. Since electricity is the dominant ongoing cost, efficiency determines whether a machine is profitable at your power rate.

Electricity

Electricity is the single largest ongoing expense in mining. A single ASIC running 24/7 at 3,000 watts consumes roughly 2,160 kWh per month. At the U.S. residential average of about $0.18/kWh, that is roughly $389 per month for one machine.

Your electricity rate determines whether mining is profitable, break-even, or a losing proposition. Miners with access to power below $0.06/kWh have a structural advantage. Miners paying residential rates above $0.15/kWh face tight margins that fluctuate with Bitcoin's price and network difficulty.

Before buying hardware, check your electricity rate and calculate monthly power costs. If the math does not work at current difficulty and price levels, the hardware purchase will not fix that.

Cooling

ASICs generate substantial heat. A single machine in a room raises the ambient temperature noticeably. Multiple machines in an enclosed space without airflow will overheat and throttle or shut down.

Home miners typically exhaust hot air outdoors using ducting and inline fans. Some route the exhaust into living spaces during winter to offset heating costs. Commercial operations use large-scale ventilation systems, immersion cooling (submerging machines in dielectric fluid, an engineered cooling liquid), or purpose-built facilities with negative-pressure airflow.

Internet

Mining uses surprisingly little bandwidth. A single ASIC communicating with a pool needs roughly 100-200 KB/s. A stable connection matters more than a fast one. Dropped connections mean lost hashes and missed shares. Wired Ethernet is preferable to WiFi for reliability.

Approach 1: Solo Mining

Solo mining means pointing your ASIC directly at a Bitcoin node (or using solo mining proxy software) and competing to find blocks on your own using proof-of-work. If your miner finds a valid block, you keep the entire block reward: 3.125 bitcoin plus all transaction fees in that block.

The Math

The Bitcoin network's total hashrate in mid-2026 sits near 900 exahashes per second (EH/s) (per mempool.space). A single high-end ASIC producing 250 TH/s represents roughly 0.00003% of that total hashrate. At that ratio, you would statistically expect to find one block roughly once every seventy years.

Solo mining is a pure probability game. Every hash your machine computes has the same minuscule chance of being valid. You could find a block in your first hour, or run for a decade and never find one.

Who Solo Mining Makes Sense For

Solo mining makes sense if you understand the odds and accept them. Some miners run solo for the same reason people buy lottery tickets: the expected value may be negative, but the potential payoff is a full block reward. Others solo mine on principle, contributing directly to the network's decentralization without routing their hashrate through a third-party pool.

If you need consistent income from mining, solo mining is not the right approach. The variance is too high for any operation measured in single-digit ASICs.

Approach 2: Lottery Mining

"Lottery mining" is solo mining reframed with clear expectations. You buy a small, often older or less efficient ASIC, plug it in at home, and let it run. You know the odds of finding a block are extremely long. You are not optimizing for profit. You are buying a ticket to a continuous lottery where each hash is one entry.

Why People Do It

Lottery miners are typically Bitcoin enthusiasts who want to participate in securing the network, learn how mining works hands-on, and maintain a non-zero chance of hitting a full block reward. The cost of running a small miner might be $30-80/month in electricity. For some, that is a reasonable price for the experience and the slim chance at 3.125+ bitcoin.

Practical Setup

Lottery miners often choose older-generation ASICs that sell for a few hundred dollars on the secondary market. Models like the Antminer S9 (14 TH/s, ~1,400W) or similar vintage hardware are cheap to acquire, though less efficient per watt. Newer low-power home miners designed specifically for this market have also emerged, offering lower hashrates in quieter, smaller form factors.

The setup is identical to solo mining: connect the ASIC to your home network, point it at solo mining software or a solo mining pool (which just routes your hashes without splitting rewards), and let it run.

Approach 3: Pool Mining

Pool mining is how most individual miners operate. Instead of competing to find blocks alone, you contribute your hashrate to a pool of miners. When any miner in the pool finds a valid block, the reward is split among all participants proportional to the work they contributed.

The tradeoff is straightforward: you give up the chance at a full block reward in exchange for small, consistent payouts. Over time, pool mining produces more predictable income than solo mining, though the total expected value is slightly lower due to pool fees.

How Mining Pools Work

When you connect your ASIC to a pool, the pool assigns you work (a range of possible solutions to try). Your miner submits "shares," which are partial solutions that prove you are working. The pool uses these shares to calculate your contribution relative to other participants.

When the pool finds a valid block, the reward is distributed according to your share of the total work. If you contributed 0.1% of the pool's hashrate, you receive roughly 0.1% of the block reward (minus pool fees).

Choosing a Mining Pool

Not all pools are the same. Key factors to evaluate:

• Fee structure: Most pools charge 1-3% of rewards. Some take a percentage of the block reward; others take a cut of transaction fees. Read the fine print.
• Payout method: FPPS (Full Pay Per Share) pays a fixed rate per share including estimated transaction fees. PPLNS (Pay Per Last N Shares) rewards miners based on shares submitted in a window before a block is found. PPS+ is a hybrid of the two. FPPS provides the most predictable income. PPLNS can pay more during high-fee periods but has higher variance.
• Pool hashrate and size: Larger pools find blocks more frequently, providing smoother payouts. Smaller pools find blocks less often but each payout is larger. Over long periods, the math converges. But for the health of the Bitcoin network, spreading hashrate across multiple pools is better than concentrating it in one or two dominant pools.
• Reputation and track record: Has the pool been operating for years? Does it pay out reliably? Are there community complaints about underpayment? Check forums and miner communities.
• Minimum payout threshold: Some pools require a minimum balance before they send a payout. If you are mining with a single ASIC, a high threshold means waiting longer between payouts.
• Transparency: Does the pool publish its hashrate, block-finding history, and payout records? Open dashboards are a good sign.

Network Health Consideration

If any single pool controls more than 25-30% of the network hashrate, it poses a centralization risk. Miners who care about Bitcoin's decentralization should factor pool size into their decision. Choosing a mid-sized pool with a good reputation over the largest pool is a direct contribution to network health.

Step-by-Step: Setting Up a Miner

Regardless of whether you plan to mine solo or join a pool, the physical setup process is the same.

Step 1: Buy the Hardware

Purchase an ASIC miner from a reputable source. Buying directly from the manufacturer (Bitmain, MicroBT, Canaan) eliminates the risk of tampered firmware or used components sold as new. If buying secondhand, verify the hashrate and condition before paying.

You also need a power supply unit (PSU) rated for the miner's wattage. Many ASICs require specific PSUs, and some ship without one. A 3,000W miner needs a PSU rated for at least 3,000W with adequate 6-pin or 12V connectors. Using an underrated PSU is a fire risk.

Step 2: Prepare the Location

ASICs are loud. A single Antminer S19-series unit produces roughly 75 decibels, comparable to a vacuum cleaner running continuously. This rules out most bedrooms and shared living spaces.

Common home locations: garage, basement, dedicated shed, or an outbuilding. The space needs:

• Adequate power: A single high-end ASIC exceeds the capacity of a standard U.S. 120V/15A circuit (rated for 1,800W); these machines require a dedicated high-amperage or 240V circuit. Most miners use 240V circuits (like those for dryers or ovens) to reduce amperage and improve efficiency. An electrician can install a dedicated 240V outlet.
• Airflow: Fresh air intake on one side, exhaust on the other. The miner's built-in fans move air through the machine; your job is to give the hot exhaust somewhere to go.
• Ethernet connection: Run a cable from your router. Wired connections are more stable than WiFi.

Step 3: Connect and Power On

Connect the PSU to the miner's power headers and plug in the Ethernet cable. Plug the PSU into your wall outlet, then power on the machine.

The miner will boot up and be assigned an IP address on your local network. You can find this IP in your router's device list or by using a network scanning tool.

Step 4: Access the Miner's Interface

Open a web browser and enter the miner's IP address. You will see a web-based control panel. Default login credentials are typically printed in the miner's documentation (common defaults: root/root or admin/admin). Change these immediately.

Step 5: Configure Pool or Solo Settings

For pool mining: Navigate to the "Miner Configuration" or "Pool Settings" page. Enter the pool's stratum URL (provided by the pool, looks like: stratum+tcp://pool.example.com:3333), your worker name (typically your account name followed by a worker identifier, like "username.worker1"), and your password (often just "x" or left blank).

Most miners allow you to set three pool addresses: a primary and two fallbacks. If the primary pool goes down, your miner automatically switches to the next one.

For solo mining: Point your miner at solo mining proxy software running on your own Bitcoin node, or use a solo mining pool service that routes your hashes without splitting rewards.

Step 6: Verify Operation

After saving the configuration and allowing a few minutes for the miner to connect, check the dashboard. You should see:

• Hashrate climbing to the miner's rated speed
• Accepted shares increasing (for pool mining)
• Temperature readings within normal range (typically 60-85°C for the hash boards)
• Fan speeds responding to temperature

Check your pool's website to confirm your worker appears and is submitting shares. Payouts will accumulate according to the pool's schedule.

Approach 4: Commercial and Industrial Mining

Commercial mining operates at a different scale. Instead of one or two machines in a garage, commercial operations run hundreds or thousands of ASICs in purpose-built facilities. The economics shift from "hobby that might pay for itself" to "infrastructure business with thin margins and high capital requirements."

Site Selection

The most important factor in commercial mining is the cost of electricity. Industrial miners seek out locations with power rates below $0.05/kWh, often in areas with surplus hydroelectric, natural gas, or stranded energy. Common locations include rural areas near power generation facilities, regions with deregulated energy markets, and jurisdictions with favorable regulatory environments.

Blockstream operated large-scale mining facilities before its mining division became an independent entity in April 2025, with operations that targeted stranded and renewable energy sources to minimize costs and environmental impact.

Beyond the power rate itself, commercial miners evaluate:

• Power capacity: Can the local grid deliver 5, 10, or 50 megawatts to a single site? Many rural substations lack the capacity for large mining loads without upgrades.
• Power reliability: Frequent outages mean lost revenue and wear on equipment from thermal cycling.
• Climate: Cold climates reduce cooling costs. Hot and humid environments increase them.
• Regulatory environment: Some jurisdictions have imposed moratoriums on mining. Others offer tax incentives.
• Connectivity: Even large mining farms need minimal bandwidth, but reliable internet and remote management capability are essential.

Power Infrastructure

Commercial mining facilities require industrial electrical infrastructure: medium-voltage transformers, switchgear, distribution panels, and properly rated wiring. A 10 MW facility needs infrastructure comparable to a small factory. Electrical engineering and permitting are non-trivial costs and timelines.

Many operations negotiate directly with power providers for interruptible power contracts (accepting curtailment, a temporary cut to the site's power draw, during peak demand in exchange for lower rates) or behind-the-meter arrangements co-located with generation sources.

Cooling Systems

At commercial scale, cooling is an engineering challenge. Common approaches:

• Air cooling: Large fans or wall-mounted exhaust systems push air through rows of miners. The building design creates a "hot aisle / cold aisle" arrangement. Effective in temperate or cold climates.
• Evaporative cooling: Wet wall or pad-and-fan systems that cool incoming air through evaporation. Effective in dry climates.
• Immersion cooling: Submerging ASICs in dielectric fluid. Eliminates fans, reduces noise, allows higher overclocking, and extends hardware life. Higher upfront cost but increasingly popular at scale.

Fleet Management

Managing hundreds of ASICs requires monitoring software that tracks individual machine performance, detects failures, and allows remote rebooting and firmware updates. Machines fail regularly at scale. Hash boards degrade, fans die, PSUs burn out. A commercial operation needs on-site or near-site technicians and a spare parts inventory.

Noise Management

A warehouse of ASICs produces noise levels above 90 decibels. Industrial miners manage noise through site selection (remote locations), building insulation, and in some cases, sound barriers or enclosures. Zoning regulations in populated areas can restrict or prohibit mining operations based on noise alone.

Approach 5: Hosted Mining

Hosted mining (also called colocation) means you buy the ASIC hardware, but someone else operates it in their facility. You own the machine. The hosting provider supplies the space, electricity, cooling, internet, and maintenance. You pay a hosting fee, typically quoted as a per-kilowatt-hour rate that covers electricity plus a margin for the provider's overhead and profit.

How It Works

You purchase a miner (either from the hosting provider or independently) and ship it to the facility. The hosting provider racks and powers the machine, connects it to your mining pool of choice, and monitors it for failures. You receive the mining rewards directly from the pool, minus the hosting fees.

What to Look For

• All-in hosting rate: Typically quoted per kWh. Rates of $0.065-0.085/kWh are common in 2026. Be sure the rate includes electricity, facility costs, and basic maintenance.
• Contract terms: Watch for long lock-in periods, early termination fees, and clauses that let the host change rates. Shorter contracts with defined rate escalation schedules are safer.
• Proof of operation: Reputable hosts provide dashboard access showing your machine's hashrate, uptime, and pool earnings in real time.
• Machine ownership: Confirm in writing that you own the hardware and can retrieve it. Some contracts give the host a lien on your equipment if you fall behind on payments.
• Facility quality: If possible, visit the site. Check power redundancy, cooling systems, physical security, and fire suppression.
• Reputation: Search for reviews from existing customers. Hosted mining has a history of providers disappearing with customer equipment or inflating electricity bills.

Risks

You are trusting a third party with physical custody of your hardware. If the hosting provider goes bankrupt, gets raided, or simply stops communicating, recovering your machines can be difficult and expensive. Due diligence on the hosting provider is as important as the hardware purchase itself.

Approach 6: Cloud Mining

Cloud mining services sell "hashrate contracts." You pay upfront or monthly, and the company claims to mine bitcoin on your behalf using their hardware, sending you a share of the earnings.

Why Cloud Mining Is Usually a Bad Deal

Most cloud mining contracts are unprofitable for the buyer, and a significant number of cloud mining services have been outright scams. The economics work against you for a structural reason: if a company can mine bitcoin profitably with their hardware, they have little incentive to sell that hashrate to you at a price that lets you profit too.

Common problems with cloud mining:

• Hidden fees: Maintenance fees, electricity surcharges, and other costs erode returns below what the headline numbers suggest.
• No real hardware: Some services never owned mining hardware at all. They paid early customers with money from later customers (a Ponzi structure) until the model collapsed.
• Difficulty increases: Contracts that look profitable at today's difficulty become unprofitable as difficulty rises. The contract terms rarely account for this in the buyer's favor.
• No exit: Most contracts cannot be sold or terminated early. If mining becomes unprofitable, you are locked in.

If you want exposure to bitcoin without running hardware, buying bitcoin directly is almost always the better option. You get the full value of your investment instead of paying premiums for hashrate you do not control.

The Economics of Mining

Mining profitability depends on four variables: the price of bitcoin, network difficulty, your electricity cost, and your hardware's efficiency. All four move independently, and none of them are in your control after you buy the hardware.

Revenue

A miner's revenue comes from block rewards (currently 3.125 bitcoin per block) and transaction fees included in the block. After the April 2024 halving, the block reward dropped from 6.25 to 3.125 bitcoin. The next halving (expected around 2028) will reduce it to 1.5625 bitcoin.

For pool miners, daily revenue depends on your hashrate's proportion of the pool's total hashrate and how many blocks the pool finds. Online calculators (like those on Braiins or Luxor) let you estimate daily revenue given your hashrate, power consumption, electricity rate, and current network conditions.

Costs

Hardware Depreciation

ASICs lose value over time as newer, more efficient models enter the market. A top-tier miner today will be mid-tier in 18 months and potentially unprofitable in 36 months, depending on electricity costs and difficulty growth. Factor this depreciation into your ROI calculation. Do not assume you can resell hardware at purchase price.

Difficulty Adjustments

Bitcoin's mining difficulty adjusts approximately every two weeks (2,016 blocks) to maintain the target of one block every ten minutes. When more hashrate joins the network, difficulty increases. When hashrate leaves, difficulty decreases. A rising difficulty means your fixed hashrate earns less bitcoin over time. A machine that is profitable today at a given difficulty may not be profitable at a higher difficulty six months from now.

A Simple Profitability Framework

To estimate monthly profit:

1. Calculate monthly revenue: Use an online mining calculator. Input your hashrate, the current difficulty, and the current bitcoin price.
2. Calculate monthly electricity cost: Multiply your miner's wattage by 24 hours by 30 days, then multiply by your electricity rate. (Example: 3,000W x 24 x 30 = 2,160 kWh. At $0.12/kWh = $259.20/month.)
3. Subtract pool fees: Typically 1-2% of revenue.
4. Monthly profit = Revenue - Electricity - Pool fees.
5. ROI timeline: Divide the hardware purchase price by monthly profit to estimate the number of months to break even.

Run this calculation at multiple bitcoin price levels and difficulty projections. If the machine is only profitable at the current all-time-high price, it is a risky investment.

Under the Hood: Profitability Math in Detail

The core formula for daily bitcoin revenue is: daily_btc = (hashrate / network_hashrate) × blocks_per_day × reward_per_block. With approximately 144 blocks per day and a current reward of 3.125 bitcoin per block (plus variable transaction fees), a 200 TH/s machine on a 900 EH/s network earns roughly: (200 × 1012) / (900 × 1018) × 144 × 3.3 ≈ 0.000106 BTC/day.

The daily electricity cost is: daily_cost = (watts / 1000) × 24 × electricity_rate. For a 3,000W machine at $0.08/kWh: 3.0 × 24 × $0.08 = $5.76/day. Convert bitcoin revenue to USD at current price, subtract electricity cost and pool fee (typically 1-2%), and the remainder is daily profit.

The critical variable most new miners underestimate is difficulty growth. Bitcoin's difficulty adjusts every 2,016 blocks (defined by nPowTargetTimespan / nPowTargetSpacing in src/kernel/chainparams.cpp). Historically, difficulty has grown 30-60% per year during bull markets, compressing per-TH earnings steadily. A machine that is profitable at today's difficulty may become unprofitable within 6-12 months if difficulty continues rising without a compensating increase in the bitcoin price. Model your ROI across a range of difficulty growth assumptions (0%, 30%, 60% annualized) to stress-test the investment.

Practical Considerations

Noise

ASICs are loud. A standard air-cooled ASIC produces 70-80 decibels of constant noise. Running one in a living space is impractical. Even in a garage, the noise carries through walls. Soundproofing enclosures, aftermarket fan replacements, and immersion cooling can reduce noise, but all add cost and complexity.

Heat

An ASIC converts nearly all of its electricity consumption into heat. A 3,000W miner produces the equivalent heat output of a 3,000W space heater. Some home miners repurpose that heat intentionally: placing the miner in a space that needs heating during winter (a garage, basement, or workshop) and exhausting it outdoors in summer.

Companies have built products around this concept, using ASIC heat to warm homes, greenhouses, hot tubs, and even grain dryers. If you have a use case for continuous heat output, mining can serve double duty.

Electricity Safety

Running high-wattage equipment 24/7 requires proper electrical infrastructure. Do not daisy-chain power strips or run multiple miners on a single household circuit. Have an electrician install dedicated circuits rated for the load. Use surge protectors rated for the wattage. Verify your home's electrical panel has capacity for the additional draw.

Taxes

In most jurisdictions, mined bitcoin is taxable income at the fair market value when received. When you later sell that bitcoin, capital gains tax applies on any price increase since receipt. Mining as a business may allow deductions for electricity, hardware depreciation, and other operating expenses. Consult a tax professional familiar with your jurisdiction's treatment of mining income.

Frequently Asked Questions

How much does it cost to start mining bitcoin?

A basic home mining setup costs $2,000-$5,000 for a current-generation ASIC plus $100-$500 for a compatible PSU, electrical work, and cooling modifications. Ongoing costs are primarily electricity, typically $150-$400 per month per machine depending on your power rate and the miner's wattage.

Can I mine bitcoin with my regular computer or GPU?

Technically yes, but practically no. The Bitcoin network's difficulty is so high that a consumer CPU or GPU would take millions of years to find a single block. Bitcoin's mining algorithm applies SHA-256 twice (SHA-256(SHA-256(block_header))) to the 80-byte block header. ASIC miners execute this double-hash in hardwired silicon performing trillions of attempts per second, making general-purpose hardware completely uncompetitive.

How long does it take to mine one bitcoin?

The time depends on your hashrate relative to the total network hashrate. A single 250 TH/s ASIC mining in a pool earns roughly 0.0001 bitcoin per day at current difficulty levels (mid-2026). At that rate, accumulating one full bitcoin would take well over two decades. The number changes as difficulty and bitcoin's price shift.

Is Bitcoin mining still profitable in 2026?

Yes for some operations, but profitability depends heavily on your electricity cost. Miners with access to power below $0.06/kWh running current-generation hardware are generally profitable. Miners paying residential rates above $0.15/kWh face tight margins. The post-halving block reward of 3.125 bitcoin means efficiency and low power costs matter more than ever.

What happens to mining after all 21 million bitcoin are mined?

The last bitcoin is projected to be mined around the year 2140. As block rewards decrease through successive halvings, transaction fees are expected to make up an increasing share of miner revenue. Mining will continue to be necessary to process transactions and secure the network, funded by fees rather than new bitcoin issuance.

Does mining at home damage my electrical system?

Not if the electrical infrastructure is properly sized. The risk comes from running high-wattage equipment on circuits not rated for continuous load. A dedicated 240V circuit installed by a licensed electrician, with appropriate breakers and wiring gauge, handles an ASIC safely. Do not use extension cords, power strips, or shared household circuits for mining equipment.