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Proof of Work Energy Calculator

Reviewed by the CalculatorHub team, edited by James Graham. Energy formula: Power (kWh) = Watts / 1000 x Hours (EIA methodology). Last verified 14 June 2026.

Proof of work (PoW) mining consumes significant electrical energy. This calculator estimates daily, monthly, and annual energy use and electricity cost for your mining operation. Enter the wattage of your mining hardware, the number of units running, and your electricity rate. An optional CO2 emission estimate uses your local grid emission intensity.

Check your miner's specification sheet
US average residential rate: ~$0.17/kWh (EIA 2024)
US average: ~0.92 lbs CO2/kWh (EIA 2023). Use 0 to skip.
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Mining energy formula

Daily kWh = (Watts x Miners x (Uptime / 100) x 24) / 1000
Daily Cost = Daily kWh x Electricity Rate
Annual CO2 (lbs) = Annual kWh x CO2 Emission Factor (lbs/kWh)

Source: U.S. Energy Information Administration (EIA), Electric Power Monthly (emission factors and electricity rates). Power formula is standard electrical engineering: P = V x I, Energy = P x t.

Energy efficiency in mining

  • Power Usage Effectiveness (PUE): data centers measure overall efficiency as total facility power divided by IT equipment power. A PUE of 1.2 means 20% overhead for cooling and infrastructure.
  • Mining hardware efficiency (J/TH): lower is better. Modern ASICs range from 17-30 J/TH; older equipment may exceed 100 J/TH.
  • The EIA's average US grid emission intensity is approximately 0.92 lbs CO2 per kWh (2023 data). Renewable energy sources reduce this to near zero.
  • Heat generated by miners can be used for space heating, partially offsetting energy costs in cold climates.

Mining energy: frequently asked questions

How is mining energy consumption calculated?

Energy consumption is calculated using the formula: Power (kWh) = Wattage (W) / 1000 x Hours. For a single miner running 24 hours: Daily kWh = Wattage / 1000 x 24. For multiple miners: Daily kWh = (Wattage x Number of Miners) / 1000 x 24. Electricity cost is then: Daily Cost = Daily kWh x Electricity Rate ($/kWh).

What is the typical energy consumption of Bitcoin mining hardware?

Modern ASIC miners consume between 1,000 watts and 4,000 watts of electricity. For example, the Antminer S19j Pro consumes approximately 3,050 watts. Older-generation miners are less efficient. Efficiency is typically measured in joules per terahash (J/TH); modern miners achieve 20-30 J/TH, compared to 100+ J/TH for older hardware.

How does the EIA calculate electricity rates?

The US Energy Information Administration (EIA) collects electricity price data from utilities and publishes average retail rates by sector and state monthly in its Electric Power Monthly report. Industrial and commercial users typically pay less than residential customers. As of 2024, the average US retail electricity price is approximately $0.16-0.17 per kWh for residential users.

What is the carbon footprint of Bitcoin mining?

The carbon footprint depends on the energy mix (renewable vs fossil fuel) used to power the mining operation. The EIA publishes emission factors for electricity generation by fuel type (lbs CO2 per kWh). This calculator includes an optional carbon estimate using a user-supplied emission intensity factor.

Does more efficient mining hardware always mean higher profit?

More efficient hardware (lower J/TH) reduces energy cost per unit of hash power, which directly increases profit margin. However, the upfront hardware cost, shipping, import duties, and setup costs must also be considered. A full return-on-investment calculation requires the Bitcoin Mining Profitability Calculator.

Official sources

Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.