Crypto Mining Data Center Design: Electrical, Cooling, Layout and Cost per MW (2026)

Every serious mining site is designed backwards from the utility connection. The questions that decide feasibility are how many megawatts you can get, at what voltage, at what all-in rate, and when. A hall full of ASICs runs flat out around the clock, so the facility behaves like a near-100% load-factor industrial customer, and the utility treats it that way.

That is why large-load tariffs matter so much at the design stage. Several US utilities now set thresholds that catch mid-sized mining sites, from TVA's data-centre charge above 5 MW to MDU's 10 MW high-density tariff in North Dakota and Idaho Power's Schedule 20, which names crypto mining explicitly. Our state tariff library covers the rules for all 50 states; in British Columbia, new mining connections are banned outright, as covered on our BC Hydro rates page.

The configurator's regional data puts indicative large-load rates between roughly 6.5 and 7.5 US cents per kWh in the cheapest states (Louisiana, New Mexico, Oklahoma, Texas, South Carolina, Tennessee) and grid queues of around 28 to 32 months from signed agreement to energisation. Design timelines are usually set by that queue, not by construction.

The electrical path of a mining facility is simpler than a colocation data centre because it is designed for uptime at the lowest cost, not for 99.999% availability. A typical path runs from the utility interconnect to an owned or utility substation, then through step-down transformers to medium-voltage and low-voltage switchgear, and finally to power distribution feeding the machines.

Two electrical decisions carry the most long-term value. First, size transformers and switchgear for the load you will eventually have, not just phase one. Second, leave physical space and a path for a second utility feed. Both are cheap on paper at design time and extremely expensive to retrofit, and both matter enormously if the site ever converts to AI hosting.

Nearly all of the electricity a miner uses leaves the building as heat, so cooling design is really heat-rejection design. There are three common approaches:

Layout follows the cooling choice: air halls use hot-aisle and cold-aisle separation with the exhaust side ducted out; container sites line up modules with clear airflow paths and service lanes; immersion sites need floor loading for full tanks and dry-cooler yards. In every case, leave room for heat reuse where it has value. Our heat reuse guide covers how that works at home scale.

Using the same cost constants as the SCR AI Build Configurator (data vintage Q3 2026), the facility cost per megawatt of IT load, before the machines themselves, looks like this:

Those figures cover shell, fit-out, land, utility works and network. They exclude the ASICs or GPUs, taxes, and the power bill. A pure air-cooled mining hall at the low end of the market can come in below the hybrid figure, because it skips most of the fit-out an AI tenant would demand; the numbers above describe sites designed to stay useful for more than one cycle. Location matters too: the configurator applies a construction cost factor by state, from about 0.87 in the Southeast to 1.2 or more in California, Alaska and Hawaii.

The most valuable design decision in 2026 is optionality. Miners with good power have signed long-term AI leases worth billions: Cipher Digital's 20-year Barber Lake lease, TeraWulf's 20-year Anthropic lease for 401 MW in Kentucky, Core Scientific's leases to CoreWeave. The sites that won those deals had interconnects, land and electrical capacity that AI tenants could use. Our miner-to-AI conversion guide goes through what changes.

If you are designing a mining site today, the cheap insurance is: reserve land for a second utility feed and a larger substation; choose hydro-cooling or leave space for liquid-cooling plant; plan floor loading and ceiling heights for heavier racks; and bring in diverse fibre routes early. None of that slows down the mining business, and all of it widens who you can sell or lease the site to later.

The SCR AI Build Configurator models seven build types, including the miner retrofit and hybrid mining + AI profiles above, against every Canadian province and all 50 US states plus DC. Pick a location, cooling and scale, and it returns capital expenditure by line item, annual energy and operating cost, revenue, EBITDA, payback and time to first revenue, with that state's large-load tariff rules applied.

Contractors and EPC firms can put it on their own website under their own brand to give prospects instant, budget-level estimates, and Enterprise licensees can run it on their own unit costs. Outputs are planning-grade estimates for screening and client conversations, not engineered quotes.