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What is the energy consumption of an Antminer S19j Pro?
The Antminer S19j Pro consumes around 3050W of power, offering high efficiency at 29.3J/TH, making it a top choice for Bitcoin mining operations.
Jul 14, 2025 at 02:08 am

Understanding the Antminer S19j Pro in Cryptocurrency Mining
The Antminer S19j Pro is one of the most widely used Bitcoin mining devices developed by Bitmain. It is designed to offer high hashing power while maintaining a relatively efficient energy consumption rate. As cryptocurrency mining becomes more competitive, understanding the exact energy consumption of this device becomes crucial for miners aiming to optimize their operations.
Energy consumption refers to the amount of electrical power a mining device uses over time, typically measured in watts (W) or kilowatts per hour (kWh). The Antminer S19j Pro operates at a nominal power draw of approximately 3050 watts, though this can vary slightly depending on environmental conditions and firmware settings.
Technical Specifications Related to Power Usage
To fully understand the energy dynamics of the Antminer S19j Pro, it’s important to look at its technical specifications:
- Hashrate: Around 104 terahashes per second (TH/s)
- Power Consumption: Rated at 3050W under typical operating conditions
- Efficiency: Approximately 29.3 joules per terahash (J/TH)
These metrics are essential for calculating operational costs and determining profitability. The efficiency metric indicates how much energy is consumed per unit of computing power, which directly affects mining profitability.
How to Measure Actual Energy Consumption
Measuring the real-world power usage of an Antminer S19j Pro involves several steps:
- Use a power meter such as a Kill A Watt or similar device to monitor live power draw
- Connect the miner to the power meter, then plug the meter into a wall socket
- Allow the miner to run for at least 24 hours to obtain an average reading
- Record both instantaneous wattage and cumulative kWh over time
This process ensures that you capture any fluctuations due to cooling systems, network activity, or voltage inconsistencies. Real-time monitoring tools like IPMI or third-party mining software can also provide ongoing insights into energy use.
Factors That Influence Energy Consumption
Several variables affect the actual energy consumption of the Antminer S19j Pro:
- Ambient Temperature: Higher temperatures may cause fans to run harder, increasing power draw
- Firmware Version: Newer firmware updates might tweak performance and power settings
- Voltage Stability: Fluctuations in input voltage can impact power efficiency
- Mining Pool Settings: Different pools may require varying levels of computational effort
Miners should consider these factors when estimating long-term energy costs and planning their infrastructure setup.
Calculating Daily and Monthly Energy Costs
To estimate the cost of running an Antminer S19j Pro, follow these steps:
- Determine your local electricity rate in dollars per kWh (e.g., $0.06/kWh)
- Multiply the miner's power consumption (in kW) by the number of hours it runs daily
- Multiply the daily kWh by the electricity rate to get the daily cost
- Multiply the daily cost by 30 to estimate the monthly expense
For example, if the miner consumes 3.05 kW and runs continuously:
- Daily consumption = 3.05 kW × 24 hours = 73.2 kWh
- If electricity costs $0.06/kWh, daily cost = 73.2 × $0.06 = $4.39
- Monthly cost ≈ $4.39 × 30 = $131.70
This calculation helps miners budget effectively and compare profitability across different mining setups.
Optimizing Energy Efficiency with Cooling and Configuration
Proper configuration and cooling play a major role in managing the Antminer S19j Pro's energy usage:
- Ensure optimal airflow around the miner to prevent overheating
- Use industrial-grade cooling systems in large-scale mining farms
- Adjust fan speeds via the miner’s web interface to balance noise and cooling efficiency
- Monitor hashboard performance to identify and replace faulty components early
Additionally, using undervolting techniques through custom firmware or Bitmain's official tuning options can reduce power consumption without significantly affecting hashrate.
Frequently Asked Questions
Q: Does the Antminer S19j Pro consume more power during startup?
A: Yes, there is a brief surge in power consumption during startup, known as inrush current. However, this spike lasts only a few seconds and does not significantly affect overall energy bills.
Q: Can I use a solar-powered system to run the Antminer S19j Pro?
A: Yes, but it requires a sufficient solar array and battery storage system capable of delivering continuous 3050W output. Proper inverters and charge controllers must be used to ensure stable power delivery.
Q: How does the Antminer S19j Pro compare to older models in terms of energy efficiency?
A: Compared to earlier models like the S9i, the S19j Pro offers significantly better efficiency—nearly 5–6 times more efficient in J/TH—making it more suitable for modern mining environments.
Q: Is the power supply included with the Antminer S19j Pro sufficient for optimal operation?
A: Bitmain provides a 3050W PSU with the miner, which is adequate for standard use. However, some users opt for higher-quality PSUs from brands like Seasonic or EVGA to improve reliability and longevity.
Disclaimer:info@kdj.com
The information provided is not trading advice. kdj.com does not assume any responsibility for any investments made based on the information provided in this article. Cryptocurrencies are highly volatile and it is highly recommended that you invest with caution after thorough research!
If you believe that the content used on this website infringes your copyright, please contact us immediately (info@kdj.com) and we will delete it promptly.
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