Does Wi-Fi modem consume electricity?

Does Wi-Fi modem consume electricity? Wi-Fi modems consume electricity. While the amount of electricity they consume is generally relatively low compared to other household devices, Wi-Fi modems typically have a power supply that converts electrical energy from an outlet to power the modem’s internal components and enable the wireless network.

Does Wi-Fi modem consume electricity?

The power consumption of a Wi-Fi modem can vary based on factors such as the modem’s make and model, technology standards (e.g., Wi-Fi 4, Wi-Fi 5, Wi-Fi 6), and whether it includes additional features like built-in routers or other networking capabilities. In standby mode or during periods of low activity, the power consumption is typically lower than when the modem is actively transmitting data.

Related Article: How To Keep Your Wifi Router On During Power Outage

Does Wi-Fi modem consume electricity?

Wi-Fi modems indeed consume electricity as they play a crucial role in enabling wireless network connectivity. They consume between 5 and 20 watts (W) of electricity, depending on the model. Most modems use about two amps, connect to a 120-volt outlet, and pull somewhere around 5 to 7 volts. Different wattage Wi-Fi modems use different amounts of electricity over a year.

These devices are equipped with internal components that require electrical power to operate efficiently. When plugged into an electrical outlet, a Wi-Fi modem utilizes a power supply to convert the electrical energy from the outlet into the necessary power to drive its functionalities.

The amount of electricity consumed by a Wi-Fi modem can vary depending on factors such as the modem’s make and model, technology standards, and additional features like built-in routers.

While the power consumption of a single modem is relatively low, the cumulative impact across households and businesses highlights the importance of considering energy-efficient modem options and adopting mindful practices to minimize unnecessary power usage, aligning with broader efforts toward sustainable energy consumption.

To enhance energy efficiency, users can explore features like standby modes during periods of low activity and ensure their Wi-Fi modem firmware is up-to-date to take advantage of any optimizations introduced by manufacturers.

Additionally, users can consider turning off their Wi-Fi modems when not in use for extended periods to further reduce energy consumption. While the environmental impact of a single Wi-Fi modem may be modest, incorporating energy-saving practices across various electronic devices contributes to a more sustainable approach to energy usage in homes and offices.

How much electricity does a modem use in 24 hours?

To calculate the energy consumption of a modem using 6 watts for 24 hours a day at $0.10 per kilowatt-hour (kWh), you can use the following formula:

Energy Consumption (kWh)=(Power (Watts)×Time (hours)1000)×Cost per kWh

Energy Consumption (kWh)=(1000Power (Watts)×Time (hours)​)×Cost per kWh

Therefore, the estimated energy cost for running a modem with a power consumption of 6 watts for 24 hours a day is approximately $0.0144 per day. Keep in mind that this is an estimate, and actual costs may vary based on local electricity rates and any fluctuations in power consumption.

Can I leave my modem on 24 7?

It is generally safe to leave your modem on 24/7. Modems are designed to operate continuously, and many internet service providers recommend keeping your modem powered on at all times to ensure a consistent and reliable internet connection.

Leaving your modem on allows it to maintain a connection with your internet service provider, which can be essential for activities like automatic updates, remote access, and any services that rely on an uninterrupted connection.

However, there are a few considerations to keep in mind:

  1. Energy Consumption: While modems typically have relatively low power consumption, leaving electronic devices on continuously does contribute to overall energy use. If energy efficiency is a concern, you may choose to turn off the modem during times when you don’t need an internet connection.
  2. Updates and Maintenance: Some internet service providers push firmware updates to modems. Leaving your modem on ensures that it can receive these updates as they become available.
  3. Cooling: Like any electronic device, modems generate heat during operation. Make sure your modem has proper ventilation, and avoid placing it in an enclosed space where heat can accumulate.
  4. Router Considerations: If your modem also functions as a router, consider the power consumption of the entire device. Some users choose to turn off the Wi-Fi or the entire router when not in use to save energy.

Not much can be done to reduce the power consumption of a wireless router, except to turn your Wi-Fi off if you are away for an extended time. Also, keep in mind that your DSL or cable modem will use approximately the same amount of power as the router.

Leaving your modem on 24/7 is generally fine and can contribute to a more convenient and reliable internet experience. If you are concerned about energy consumption, you may explore turning it off during periods of inactivity or when you are away.

Does the internet raise your electric bill?

This is another common question that people have about the internet. Although the modem itself doesn’t consume a lot of electricity, the internet connection does. The internet is a network that connects many devices and is used for many things. It will consume more electricity than a modem alone.

The internet is used for multiple things. Besides being used for your modem to communicate with your service provider, it is also used for many other things. Many people use the internet to watch or listen to music or videos. Others may use it to download some files or apps while others use it to communicate with others through social media or messaging apps.

You may also use the internet to watch live TV broadcasts or use video-calling apps. All these activities use the internet, which means they consume electrical energy. It is worth noting, though, that these activities only use electricity when they are being performed.

Does turning off Wi-Fi save electricity?

Turning off Wi-Fi can save electricity. When you turn off the Wi-Fi on your router or modem, you are essentially disabling the wireless radio signals that transmit data wirelessly between your devices and the router. Turning off the Wi-Fi router reduces the power consumption of the router or modem, as it no longer needs to actively broadcast and receive wireless signals.

The amount of energy savings will depend on the specific make and model of your router or modem, but generally, the power consumption decreases insignificantly when Wi-Fi is turned off. This is particularly relevant during times when you are not actively using the internet or when your devices are not connected to the Wi-Fi network.

It’s important to note that turning off Wi-Fi will affect your internet connectivity, and it’s typically recommended to turn off Wi-Fi when it’s not needed. If you want to save even more energy, you can consider turning off the entire router or modem when it’s not in use for extended periods, such as when you’re away from home or sleeping.

How can I reduce the power consumption of my modem?

Reducing the power consumption of your modem can be beneficial for energy efficiency. While modems are generally designed to be energy-efficient, here are some tips to help minimize their power consumption:

  1. Turn Off When Not in Use:
    • If you’re away for an extended period or when you don’t need internet access, consider turning off your modem. This can be done manually by disconnecting the power or using any power-saving features provided by the modem.
  2. Use Energy-Efficient Models:
    • When choosing a modem, consider models that are designed to be energy-efficient. Newer models often come with improvements in power efficiency.
  3. Combine Modem and Router:
    • If your setup includes separate devices for a modem and router, consider using a combination modem-router unit. Integrated devices can potentially be more energy-efficient than having separate components.
  4. Check for Firmware Updates:
    • Ensure that your modem’s firmware is up-to-date. Manufacturers may release updates that include optimizations, bug fixes, and improvements in energy efficiency.
  5. Use Standby Mode:
    • Some modems have a standby or sleep mode that can be activated during periods of inactivity. Check your modem’s user manual or settings to see if it has this feature.
  6. Proper Ventilation:
    • Ensure that your modem has proper ventilation to prevent overheating. Overheating can reduce the efficiency of electronic components and may lead to higher energy consumption.
  7. Consider External Factors:
    • If you have a separate router, keep in mind that the router also contributes to your overall power consumption. Consider turning off unnecessary features on the router or turning it off when not needed.
  8. Energy Monitoring:
    • Consider using energy-monitoring devices or smart plugs to track the power consumption of your modem. This can help you understand how much energy it is using and make informed decisions about when to turn it off.

While individual modems may vary in terms of available features, these general tips can help you manage and potentially reduce the power consumption of your modem and associated networking equipment. Always refer to your modem’s user manual for specific instructions and information about its power-saving features.


Wi-Fi modems do consume electricity. While the power consumption of a Wi-Fi modem is generally modest compared to other household devices, it operates continuously to facilitate wireless connectivity. The modem requires electrical power to transmit and receive data wirelessly between devices and the router, converting electrical energy from an outlet to power its internal components.

Users can be mindful of energy usage by considering energy-efficient modem models, turning off Wi-Fi or the entire modem when not needed, and ensuring proper ventilation to optimize the device’s energy efficiency. Overall, acknowledging and managing the electricity consumption of Wi-Fi modems aligns with sustainable energy practices.


Should I turn modem off at night?

Turning off your modem at night can save electricity and reduce energy consumption. Modems typically consume power continuously, even when not actively in use. Switching off the modem during periods of inactivity, such as overnight, is an energy-efficient practice.

How much power does a modem and router use?

The estimated energy cost for running a Wi-Fi router with a power consumption of 6 watts for 24 hours a day is approximately $0.0144 per day. Keep in mind that this is an estimate, and actual costs may vary based on local electricity rates and any fluctuations in power consumption.

How many Watts does a modem use?

A modem typically consumes around 6 watts of power. If used continuously for 24 hours, the estimated energy consumption would be approximately 0.144 kilowatt-hours.