Recommended Free Tools
Digital currencies do not all use comparable amounts of electricity. The key distinction is how a network validates transactions: proof-of-work mining, used by Bitcoin, relies on energy-intensive computing, while proof-of-stake validation does not depend on the same computational race. For electricity markets, the effects then depend on how much mining takes place, where and when it runs, the local power mix, and whether operators can reduce demand when the grid is under pressure.
How much electricity does Bitcoin mining use?
The Cambridge Centre for Alternative Finance estimated annual Bitcoin mining electricity use at 138 terawatt-hours (TWh) in its 2025 report, equivalent to about 0.54% of global electricity use. This is an industry estimate informed by a survey, not a direct reading of every mining facility. The survey covered 49 firms operating across 23 countries and represented 48% of Bitcoin network hashrate at the time data was collected.
As an Amazon Associate I earn from qualifying purchases.
For scale, energy is the amount consumed over time: TWh measures that accumulated use. Power, often expressed in gigawatts (GW), describes the rate of electricity use at a given moment. The distinction matters for the grid: annual energy totals describe the overall footprint, while the load at a particular hour and location helps determine whether demand coincides with a local peak.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →The U.S. Energy Information Administration’s February 2024 analysis gave a preliminary estimate that cryptocurrency mining used 0.6%–2.3% of U.S. electricity consumption. That range concerns U.S. cryptocurrency mining, not global Bitcoin mining, and differs from the Cambridge estimate in date, geographic scope, and method; the figures should not be treated as a single time series.
#1 Best Overall
- Compared to the older Antminer APW3++, the new Antminer APW7+ Power Supply is 1800w with an input voltage of 220v. The PCB uses a conformal coating to prevent damage from high voltage spark discharges on MOS pins, or near high-pressure solder joints when external conductive particles or dust enter the PSU.
- Considering the high temperature in mining operations, all internal components are selected with a standard of 105°C, so the APW7 has a much longer lifespan than a general use PSU under similar high temperatures.
- One APW7 can power up one S9i, one L3++, one D3, one V9, one X3, one E3 or one Z9 mini. This APW7 has 5 pairs of 6 pin PCI-E connectors (i.e. 10 connectors)
- The APW7 can deliver a maximum power of only 1000W if it is connected to a 110V mains power supply. To obtain the rated power of 1800W, the APW7 must be connected to a 220-240V mains power supply. Please check the mains power supply that is the standard in your region before ordering.
- The air flow direction runs from the AC input to the DC output, which is the same configuration as most miners. This proves beneficial for those with large-scale mining operations where heat management is a major consideration.
Why do some digital coins use far less electricity?
Proof of work
In proof-of-work systems, specialized computers perform repeated calculations as part of validating blocks. Mining operators run these machines, along with supporting equipment such as cooling systems, and the computational race can require substantial electricity. Bitcoin is the central case in current mining estimates because it uses proof of work.
Proof of stake
Proof-of-stake systems validate transactions without relying on the same race of computational work. They therefore require far less computing power and electricity than proof-of-work mining. In data cited by the EIA in 2024, Ethereum’s power demand was 0.005% of Bitcoin’s. That is a dated comparison illustrating the difference between mechanisms, not a current ratio that applies to every coin or network.
So a coin’s name alone is not enough to estimate its electricity use. Start with its consensus mechanism, then consider the network’s scale and operating conditions.
How can mining affect electricity prices, reliability, and emissions?
Large loads can change local demand
Mining facilities can draw substantial electricity and may concentrate demand in particular places. When a large new load connects, utilities and grid planners may need to account for it in supply, transmission, peak-demand, and reliability planning. The EIA noted in its February 1, 2024 analysis, Tracking electricity consumption from U.S. cryptocurrency mining operations, that additional electricity use has attracted attention from policymakers and grid planners concerned about cost, reliability, and emissions.
Rank #2
- 1. Interfaces: 24PIN*1, 4+4PIN*1, SATA*8, big 4PIN*4, 6+2PIN*16 - Voltage: Normal operation under 110V-240V
- 2. High temperature protection: When the temperature exceeds 50 centigrade, the power supply will start high temperature protection to avoid damage to it caused by excessive temperature
- 3. Conversion rate: 90% conversion rate, more power saving
- 4. Pure copper core wire: The wire uses a pure copper core, which is resistant to high temperatures and more durable
- 5. Dust-proof and moisture-proof: the power supply is equipped with a dust cover to adapt to various harsh environments
The price and reliability effect is not automatic or uniform. It depends on the facility’s size and location, when it runs, available generation and transmission, local market rules, and whether demand is especially high at the same time. Mining may compete with other users for power in a constrained area; in another setting, it may use generation that would otherwise be underused. The outcome needs to be assessed for the specific grid and time period.
Emissions depend on the electricity source and accounting method
The Cambridge report’s central annual estimate for Bitcoin mining emissions was 39.8 million tonnes of carbon-dioxide equivalent (MtCO₂e), about 0.08% of global emissions. The same report presents a substantially higher 69.6 MtCO₂e estimate using an IP-based model, and a survey-based range of 32.9–37.6 MtCO₂e under different assumptions. These are method-dependent estimates, not interchangeable measurements; the figure needs to be read alongside the method used.
In the report’s survey, miners’ electricity mix was estimated to be 52.4% sustainable, comprising 42.6% renewables and 9.8% nuclear. Natural gas accounted for 38.2% and coal for 8.9%. The report’s use of “sustainable” includes nuclear, so it is not synonymous with “renewable.” A mining load powered by lower-emissions electricity has a different emissions profile from one using fossil-heavy supply, even if both consume the same amount of energy.
Can mining help balance the grid by switching off?
Some mining operations can reduce or pause activity when electricity prices rise or when a grid program calls for demand response. The Cambridge report records 888 gigawatt-hours (GWh) of electrical load curtailed during calendar year 2023. That supports the conclusion that some mining demand can be flexible; by itself, it does not establish a net benefit to the grid or climate.
Rank #3
- 1600W ultra-high power, conversion efficiency of 87+ Gold.
- 135mm large noise reduction fan design for optimal system cooling and maximizing performance.
- Original factory, all parameters are actual data without any virtual labels.
- Specific designed for US voltage 110V(Can work with all range 100-240V)
- Applicable to all types of mining miners (as S7,S9,L3+,D3) and Graphic PC
Whether curtailment helps depends on when and where it occurs, what generation is displaced or avoided, and the rules of the relevant market or demand-response program. A facility’s ability to switch off can be useful in a tight period, but it does not erase the electricity or emissions associated with the hours it was operating. The EIA described demand-response participation and ERCOT’s large flexible load program in its U.S. analysis; those examples should not be assumed to represent every region or mining operation.
What drives mining’s location and changing electricity demand?
Operators seek low-cost electricity, so mining can locate near underused generation, direct power sources, renewable supply, or energy that is otherwise stranded. Those possibilities do not guarantee that a facility uses low-emissions electricity or improves local grid conditions: the result depends on the actual source, grid connection, operating hours, and local constraints.
Electricity costs are a strong operating incentive. Cambridge’s 2025 survey found that electricity accounted for over 80% of surveyed miners’ cash-based operating expenses; respondents reported median electricity costs of $45 per megawatt-hour and median all-in costs of $55.5 per megawatt-hour. These are survey medians, not a universal tariff or a forecast of what mining will cost in a given market.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Mining loads can also move, and equipment efficiency changes over time. Cambridge reported a 24% year-on-year improvement in hardware efficiency, reaching 28.2 joules per terahash by June 2024. Yet the report also estimated that Bitcoin mining electricity consumption rose 17% year-on-year as network hashrate increased. More-efficient hardware can reduce electricity needed for a given amount of computing, but efficiency gains do not ensure that total consumption falls when the amount of computing grows.
Rank #4
- Item name: Mining Machine Power Supply
- copper output wire and sufficient material & transforming rate Using a new largecapacity large magnetic ring material the performance is very stable.
- Heavy-duty protections, including Over Voltage Protection, Under Voltage Protection, Over Current Protection, Over Power Protection, and Short Circuit Protection.
- The efficiency is as as 95%, which can reduce electricity bills. More energy saving! More environmentally friendly!
- The output does not fluctuate with the input voltage, so you can obtain a highly stable output voltage, really protect the computer.Quiet, perfect for home use
What else belongs in a comparison of mining impacts?
Electricity use is only one part of the footprint. Hardware has a lifecycle, and the grid consequences depend on specific operating conditions. A useful comparison should make the scope and method explicit rather than relying on a single headline number.
- Consensus mechanism: establish whether the network uses proof of work or proof of stake before comparing electricity demand.
- Scale and period: distinguish instantaneous power from energy accumulated over a stated period, and identify the year and geographic scope of any estimate.
- Electricity mix and emissions method: separate renewables from nuclear where reported, and state whether emissions are survey-based, location-based, or modeled using another method.
- Location and timing: consider local grid constraints, peak coincidence, electricity prices, and whether the operation can relocate or curtail.
- Flexibility and equipment lifecycle: consider documented curtailment, hardware efficiency, and what happens to retired equipment without treating these as substitutes for total electricity use.
For 2024, Cambridge estimated 2.3 kilotonnes of mining-related electronic waste and reported that 86.9% of decommissioned hardware was resold, repurposed, or recycled. Those figures describe different aspects of equipment’s lifecycle; reuse or recycling does not make the electricity footprint disappear.
How certain are the estimates?
Mining can be difficult to identify among millions of electricity customers, and operators can relocate. That makes both top-down estimates and facility-by-facility accounting challenging. Survey results also reflect who responded: Cambridge’s 2025 report cautions that strong U.S. participation likely overstates the U.S. share in its reported geographic distribution. Its electricity-mix and emissions findings should therefore be read as survey-informed estimates with stated limitations, not a complete census of the network.
The EIA’s 2024 U.S. range and Cambridge’s 2025 global Bitcoin estimate answer different questions, so neither should be used to claim a precise trend between the two. The International Energy Agency’s Electricity 2024 provides broader power-sector context, but it is not a cryptocurrency-specific measurement.
What the evidence says about digital coins and energy markets
Proof-of-work mining can create a significant, movable electricity load, with consequences for local planning, prices, reliability, and emissions that vary by place and time. Flexible operations may reduce demand during some tight periods, but that does not establish a net benefit. Proof-of-stake networks use a different validation approach and should not be assigned Bitcoin’s electricity footprint. Any meaningful claim about a coin’s energy-market impact needs to identify its consensus mechanism, the scale and period measured, the electricity mix, the location, and the estimation method.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
