Bitcoin Mining Farms Explained: How They Work, What They Cost and Where They Are

A bitcoin mining farm is a facility filled with specialized computers that compete to add new blocks to the Bitcoin blockchain and earn newly created bitcoin plus transaction fees in return. Some farms are converted warehouses with a few hundred machines; others are industrial campuses drawing hundreds of megawatts of power, rivaling small cities in electricity use.

Understanding how a bitcoin mining farm works helps explain a lot about Bitcoin itself: how the network stays secure, why mining has moved to places like Texas, why electricity prices matter so much, and why many large miners are now also building data centers for artificial intelligence. This guide covers the technology, the economics, the biggest US operations, the environmental debate and what it would take to start a small operation of your own. It is written for US readers and is not investment advice.

New to Bitcoin? Our crypto for beginners guide explains the basics first.

What Mining Actually Does

Bitcoin has no central bank or company deciding which transactions are valid. Instead, a global network of miners does that work. Miners collect pending transactions into a block, then race to find a number that, combined with the block’s data, produces a hash below a target set by the network. This process is called proof of work.

Finding that number requires enormous amounts of trial and error. The first miner to find a valid answer broadcasts the block, other nodes check it, and if it is valid, the block is added to the chain. The winner receives the block reward.

The block reward today

Since the April 2024 halving, each new block creates 3.125 new bitcoin, called the block subsidy. Miners also collect the fees attached to the transactions in that block. The subsidy halves roughly every four years, or every 210,000 blocks, with the next halving expected in 2028. Each halving cuts mining revenue in bitcoin terms, which puts pressure on less efficient operations.

Difficulty and hashrate

The network adjusts mining difficulty about every two weeks so that blocks keep arriving roughly every 10 minutes, no matter how many machines are mining. When more computing power joins, difficulty rises. At the October 29, 2026 adjustment, difficulty rose by about 5.5% to roughly 148.36 trillion, and the network hashrate averaged around 1,060 exahashes per second over the prior period, just above 1 zettahash per second.

Inside the Facility

From the outside, a modern mining site often looks like a row of metal sheds, shipping containers or large warehouses next to a substation. Inside, the setup is built around three things: machines, power and cooling.

The machines

Farms use application-specific integrated circuit miners, usually called ASICs. These machines do one thing only: compute the SHA-256 hashes that Bitcoin mining requires. They are far faster and more efficient than graphics cards or regular computers for this task.

Efficiency is measured in joules per terahash (J/TH), or watts per terahash per second. Lower numbers are better. Recent models listed on Hashrate Index in 2026 show how far the hardware has come:

Model (listing date)	Hashrate	Efficiency	Cooling
Antminer S23 XP Hyd (Aug 2026)	600 TH/s	8.9 W/TH	Hydro (water)
SEALMINER A4 Ultra Hydro (Apr 2026)	886 TH/s	9.45 W/TH	Hydro (water)
SEALMINER A4 Pro Air (Apr 2026)	336 TH/s	10.9 W/TH	Air
Whatsminer M6DS+ (Mar 2026)	504 TH/s	17.0 W/TH	Hydro or immersion

Older machines with much higher J/TH figures become unprofitable as difficulty rises, so large farms regularly replace their fleets.

Power infrastructure

Electricity is the single biggest ongoing cost. Large farms connect directly to high-voltage transmission lines through their own substations, then step the power down through transformers and distribution units to each rack of machines. Smaller farms may rely on commercial connections, which limits how much they can grow.

Cooling

ASICs turn almost all of the electricity they use into heat. Farms deal with it in three main ways:

• Air cooling. Large fans pull outside air through rows of machines. It is the cheapest option but struggles in hot, dusty climates.
• Hydro cooling. Water or coolant circulates through plates attached to the chips, then through outdoor radiators or cooling towers.
• Immersion cooling. Machines are submerged in non-conductive fluid that absorbs heat. It allows higher performance and can extend hardware life, but costs more upfront.

Network and monitoring

Each machine connects to a mining pool over the internet. Farm operators use software to monitor temperatures, hashrate and faults across thousands of machines, and to switch machines off quickly when power prices spike.

From Laptops to Industrial Campuses

Mining did not start in giant warehouses. In 2009, the first bitcoin were mined on ordinary home computers using their main processors. As more people joined and difficulty rose, miners moved to graphics cards in 2010, which handled the repetitive hashing work far faster. Field-programmable chips followed briefly, and by 2013 the first ASIC miners arrived, built for nothing but Bitcoin’s SHA-256 algorithm.

ASICs changed the economics completely. Once a single machine could outperform hundreds of graphics cards, mining became an industrial activity where scale, cheap electricity and bulk hardware purchases decided who stayed profitable. Large farms appeared in China, close to cheap hydropower in Sichuan and Yunnan and coal power in Xinjiang and Inner Mongolia. For several years, Chinese operators controlled the majority of global hashrate.

That changed in 2021, when Chinese authorities banned crypto mining. Operators shipped machines abroad, and the United States, with its deep capital markets, available land and varied power markets, absorbed much of that capacity. Kazakhstan, Russia and Canada also gained share. Since then, US miners have raised billions of dollars through public markets and debt to build large campuses, and the industry has become far more professional, with long-term power contracts, dedicated engineering teams and quarterly earnings reports.

How Farms Earn Money

Most farms do not mine alone. Because finding a block is a matter of probability, even a large farm might go days without winning. Instead, farms join mining pools, which combine hashrate from many participants and share rewards in proportion to the work each contributes. Over one week in late 2026, mempool.space showed Foundry USA as the largest pool with about 25% of blocks, followed by AntPool at about 19% and F2Pool at about 17%.

Hashprice

The industry measures revenue using hashprice, the expected daily earnings for one unit of hashrate. Hashrate Index data put hashprice at about $36 per petahash per day in late October 2026, falling to about $33 by its November 2 snapshot as difficulty rose and bitcoin slipped below $80,000. Hashprice moves with the bitcoin price, transaction fees and network difficulty.

A simple worked example

The numbers below are an illustration, not a forecast. Suppose a farm runs one air-cooled machine producing 336 TH/s at 10.9 W/TH, and hashprice is $35 per PH per day.

Item	Calculation	Result
Daily revenue	0.336 PH × $35	About $11.76
Power draw	336 TH × 10.9 W	About 3,660 W
Daily energy use	3.66 kW × 24 hours	About 88 kWh
Power cost at $0.05 per kWh	88 × $0.05	About $4.40
Power cost at $0.12 per kWh	88 × $0.12	About $10.56

At an industrial rate of 5 cents per kWh, the machine earns a positive margin before hardware, hosting and maintenance costs. At a typical home or small business rate, much of that margin disappears. This is why large farms chase very cheap power and why home mining rarely makes financial sense in most of the US.

Other revenue streams

Large miners have added income sources beyond mining itself:

• Demand response. In Texas, some miners agree to cut power use when the grid is under stress, earning credits or selling power back.
• Hosting. Farms rent space, power and maintenance to other miners.
• AI and high-performance computing. Several miners are converting parts of their sites into data centers for AI workloads, which can offer steadier revenue than mining.

The Biggest Bitcoin Mining Farm Locations in the US

The United States became the world’s mining center after China banned crypto mining in 2021. A Cambridge Centre for Alternative Finance survey published in April 2025 found that US-based firms accounted for about 75.4% of the hashrate covered by its survey of mining companies. That figure reflects surveyed firms, not every miner worldwide, but it shows how concentrated the industry has become in America.

Why Texas leads

Texas is the leading US state for mining. A 2023 Foundry report cited by Decrypt found that Texas hosted about 28.5% of US Bitcoin hashrate. The state offers several advantages:

• Cheap power from abundant natural gas, wind and solar.
• A deregulated grid run by ERCOT, which lets large users buy power on the wholesale market.
• Demand response programs that pay large flexible loads to switch off during peak demand.
• Land and a business-friendly regulatory climate.

Other important states include Georgia, New York, Pennsylvania, Kentucky, North Dakota, Wyoming and Ohio, often near cheap hydro, nuclear, gas or wind power.

Example: Riot Platforms

Riot Platforms runs some of the largest single sites in the country. In its first quarter 2026 results, the company listed 700 MW of power capacity at Rockdale, Texas, 1.0 GW at Corsicana, Texas, and 300 MW in Kentucky, a 2.0 GW power portfolio in total. It reported 42.5 EH/s of deployed hash rate with a target of 45 EH/s by late 2026. Riot is also preparing parts of its sites for data center customers, including a 168 MW building at Corsicana and a lease with chipmaker AMD at Rockdale, a sign of how the industry is shifting.

Other large public US miners include MARA Holdings, CleanSpark, Cipher Mining, Core Scientific, Hut 8 and TeraWulf, each with multiple sites and different mixes of owned and hosted capacity.

Energy Use and the Environmental Debate

Mining’s energy use is the most debated part of the industry. On February 1, 2024, the US Energy Information Administration published a preliminary estimate that crypto mining used between 0.6% and 2.3% of US electricity. The EIA identified 137 mining facilities, with location and capacity data for 52 of them across 21 states, mostly in Texas, Georgia and New York.

Arguments from critics

Critics, including some environmental groups and local residents, raise several concerns.

• Mining uses large amounts of electricity for a single purpose.
• Some sites run on fossil fuels, adding to emissions.
• Noise from fans and cooling systems has caused complaints from neighbors in several communities.
• Large loads can raise local power prices or strain grids if not managed well.

Arguments from supporters

The industry and many energy researchers point to a different set of facts.

• Miners can locate near stranded or wasted energy, such as flared gas at oil wells or surplus wind and solar.
• Flexible mining loads can switch off quickly, helping grid operators balance supply and demand.
• The Cambridge survey from 2025 reported that about 52.4% of the energy used by surveyed miners came from sustainable sources, including renewables and nuclear.

The truth varies site by site. A farm running on curtailed wind power in West Texas has a very different footprint from one running on a coal plant. Local rules, community agreements and transparency about power sources make a big difference.

Types of Mining Farms

Not every facility looks the same. Operators choose a design based on climate, budget and how flexible they need to be.

Type	Description	Pros	Cons
Warehouse	Machines on racks inside a large building with industrial fans	Simple, scalable	Dust and heat in hot climates
Containerized	Machines installed in shipping containers placed near power	Fast to deploy and move	Limited space per unit
Immersion site	Machines submerged in cooling fluid in tanks	High efficiency, quieter	Higher setup cost
Behind-the-meter	Located directly at a power plant or wind farm	Very cheap power	Depends on one energy source
Flare gas site	Uses gas that would otherwise be burned at oil wells	Low cost, cuts flaring	Remote, smaller scale

Large public miners often mix several types across sites, which spreads risk across different power markets and climates.

Costs of Starting a Mining Operation

Starting a bitcoin mining farm is capital intensive. Even a small commercial setup involves several cost categories.

Cost category	What it covers
Hardware	ASIC miners, spare parts and power supplies
Site	Land or building lease, containers, security
Electrical	Transformers, switchgear, cabling, power distribution
Cooling	Fans, hydro loops or immersion tanks
Power contract	Utility deposits and ongoing electricity costs
Operations	Staff, monitoring software, repairs and insurance
Compliance	Permits, noise studies, taxes and legal advice

Large public miners spend hundreds of millions of dollars building sites. Smaller investors usually avoid building from scratch.

Hosting as an alternative

Instead of building a farm, many individuals buy ASICs and pay a hosting company to run them in an existing facility. The host provides power, cooling and maintenance for a fee, often priced per kilowatt-hour. This lowers the barrier to entry, but you take on hardware risk and must vet the host carefully. Read contracts closely, confirm the host actually has the capacity it claims and be wary of cloud mining offers promising fixed returns, which have been a common vehicle for scams, much like fake crypto recovery services.

Risks of Running a Farm

Mining can be profitable, but it is a volatile business.

• Bitcoin price risk. Revenue falls quickly when the price drops.
• Difficulty growth. As more hashrate joins, each machine earns less bitcoin.
• Halvings. The 2028 halving will cut the block subsidy again, to 1.5625 BTC.
• Hardware obsolescence. New, more efficient machines make older fleets uncompetitive.
• Power price changes. Long-term contracts help, but energy markets can shift.
• Regulation and local opposition. Zoning rules, noise limits and tax changes can affect operations.
• Operational risk. Fires, storms, heat waves and equipment failures can take sites offline.

How to Judge a Public Mining Company

Many US investors get exposure to mining by buying shares in listed miners rather than running machines. If you go that route, a few metrics help compare companies:

• Hashrate and growth plans. How much computing power the company runs now and plans to add.
• Fleet efficiency. Average J/TH across the fleet. Lower is better.
• All-in power cost. What the company pays per kWh, including any demand response credits.
• Cost to mine one bitcoin. Many companies report this, though methods vary.
• Balance sheet. Debt levels and how much bitcoin the company holds.
• AI and HPC exposure. Signed data center contracts can add steadier revenue but also new execution risk.

Mining stocks often move more sharply than bitcoin itself in both directions, so they suit only investors comfortable with high volatility.

Why Farms Matter for Network Security

Mining is not just a business; it is how Bitcoin defends itself. To rewrite recent transactions, an attacker would need to control more computing power than the rest of the network combined, a scenario often called a 51% attack. With network hashrate around 1,000 exahashes per second in late 2026, assembling that much hardware and electricity would cost billions of dollars, which makes such an attack impractical for almost anyone.

Concentration is the flip side. When a large share of hashrate sits in one country, one state or a few pools, critics worry about the risk of regulatory pressure or coordinated outages, such as a major storm forcing many Texas sites offline at once. Pools do not own the machines, and miners can switch pools quickly, which limits that risk, but geographic spread remains a healthy sign for the network.

Taxes on Mining Income in the US

The IRS treats mined bitcoin as ordinary income, based on its fair market value when you receive it. If mining is a trade or business, self-employment tax may also apply, and business expenses such as electricity and depreciation on equipment may be deductible. When you later sell the mined bitcoin, any change in value from the time you received it creates a capital gain or loss. Farms should keep detailed records and work with a tax professional familiar with digital assets.

Frequently Asked Questions

These are common questions about how mining farms operate.

Final Thoughts

A bitcoin mining farm is essentially a giant power-to-security converter: it turns electricity into the computing work that keeps the Bitcoin network honest and earns new bitcoin in the process. Success depends on cheap, reliable power, efficient machines, good cooling and careful management through price swings and halvings.

The US now dominates the industry, led by Texas, and the largest operators are increasingly mixing mining with AI computing. If you are considering getting involved, start with the numbers: your power cost, the machine’s efficiency and current hashprice. For most individuals, hosting, publicly listed miners or simply buying bitcoin are far simpler options than building a farm, and none of them is risk free.

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