How much energy does a Wi-Fi router consume: calculations, comparisons, and ways to save

Have you ever wondered how much electricity your Wi-Fi router uses to provide internet 24/7? In an age of rising utility rates, even small appliances can impact your bill. This is especially true if you have multiple appliances—for example, a main router plus a repeater to boost the signal in distant rooms.

In this article we will figure out, How much power does a Wi-Fi router actually consume per hour, day, and month?, let's compare popular models from TP-Link, ASUS, Keenetic And XiaomiWe'll also show you how to reduce power consumption without compromising connection stability. You'll learn whether it's a good idea to turn off your router at night, how network load affects power consumption, and which settings can help save power.

How to Measure Router Energy Consumption: Basic Concepts

The router's power consumption is measured in watts (W) — this is the power the device is currently consuming. But for cost calculations, it's more important kilowatt-hours (kWh) — it is in these meters that electricity consumption is recorded, and your bill depends on it.

The formula is simple: Monthly consumption (kWh) = Router power (W) × 24 hours × 30 days / 1000.

For example, if your TP-Link Archer C6 If it consumes 12 W per hour, then in a month of continuous operation it will “wound up” about 8.6 kW⋅h.

• 🔌 Nominal power — indicated on the router sticker or in the instructions. This is the maximum consumption under peak load.
• ⚡ Real consumption — usually 20–30% lower than the nominal value, since the router rarely operates at its limit.
• 📊 Cost of 1 kW⋅h — depends on the region and tariff. On average, in Russia in 2026, it will be 4–7 rubles.

It is important to understand that consumption depends on:

• 📶 Number of connected devices - each new device slightly increases the load.
• 🔄 Operating mode — distributing Wi-Fi on two bands (2.4 + 5 GHz) “eats” more energy than one.
• 🔧 Additional functions — VPN, parental controls, guest networks, and even case lighting add 5–15% to consumption.

Power consumption of popular router models: a comparison table

We tested and collected data on the power consumption of routers in various price categories, from budget to flagship. The figures are for the mode normal load (3-5 connected devices, Wi-Fi on both bands, no additional features).

Gaming and Mesh routers (eg. ASUS RT-AX88U or TP-Link Deco X60) can consume up to 30–40 W — their energy efficiency is often sacrificed for high performance. If you don't need speeds above 1 Gbps, consider models labeled "Eco" or "Green."

⚠️ Attention: Manufacturers sometimes understate actual power consumption in their specifications. For accurate measurements, use wattmeter (costs from 500 rubles) or a smart socket with an energy metering function.

Factors Affecting Router Power Consumption

Even two identical routers can consume different amounts of power, depending on their settings and operating conditions. Let's look at the key points.

1. Number of connected devices

Each new device on the network increases the load on the router's processor, leading to increased power consumption. For example:

• 📱 1-2 devices (smartphone + laptop) - consumption at the passport level.
• 🖥️ 5-10 devices (smartphones, TV, smart appliances) - 10-20% increase to the nominal power.
• 🏠 15+ devices (office, smart home) - the router can operate at its limit, consuming 30–50% more.

2. Wi-Fi operating mode (2.4 GHz vs 5 GHz)

Range 5 GHz Provides high speed, but requires more energy to transmit the signal. If you don't need speeds above 300 Mbps, you can disable 5 GHz in the settings: Wireless Mode → Wi-Fi Settings → Disable 5GHz.

2.4 GHz It's less power-hungry, but less efficient in multi-apartment buildings (due to interference from neighbors). The best option is to use both bands, but manually assign devices to them.

3. Additional functions

Each activated option adds load:

• 🔒 VPN server — +5–10% to consumption.
• 👨‍👩‍👧‍👦 Parental control — +3–7%.
• 🌐 Guest network — +2–5%.
• 💡 Case illumination (for some models) — up to +1–2 W.

4. Firmware and power saving mode

Older firmware versions may contain bugs that cause the router to consume more power. Update the firmware using the menu: Administration → Firmware Update.

Some models (eg Keenetic or ASUS) support power saving modeIt reduces signal transmission power when there are no active connections, saving up to 30% energy. Look for this option in the section Additional settings → Energy saving.

Should you turn off your router at night? Pros and cons

One of the most popular questions: Does turning off the router at night save energy?? Let's count.

Let's say yours TP-Link Archer C20 consumes 8 watts. If you turn it off for 8 hours every day, the savings will be: 8 W x 8 h x 30 days = 1.92 kWh per month (About 10 rubles at a rate of 5 rubles/kWh). It's not much, but if your router is powerful (20+ W), the savings will increase to 25–30 rubles.

Pros of turning off:

• ⚡ Energy savings (even if small).
• 🛡️ Reduced risk of hacking - at night, many vulnerabilities are less critical.
• 🔄 Restarting your router once a day can solve Wi-Fi freezing issues.

Cons:

• ⏱️ In the morning, you will have to wait 1–2 minutes for the router to boot up.
• 📱 Nightly OS updates on smartphones/PCs will be interrupted.
• 🏠 Smart devices (cameras, sensors) will lose connection.

⚠️ Attention: Frequent switching of the router on and off (more than once a day) reduces the lifespan of its capacitors. If you decide to save power this way, use smart socket with a timerto avoid power surges.

How to Reduce Router Power Consumption: 7 Effective Methods

If you're not willing to put up with the extra kilowatts, here's practical methods to reduce costs without damaging the Internet.

1. Disable unnecessary features

   Check what options are enabled on your router. For example, UPnP, IPv6 or WPS Often enabled by default, but rarely used. Disable them in the menu. Additional settings.

2. Switch to a wired connection

   If your PC or TV is located near the router, connect them via cable (LAN). This will reduce the load on the Wi-Fi module, which consumes the lion's share of energy.

3. Limit the signal transmission power

   In the Wi-Fi settings (Wireless Mode → Transmission Power) set the value 50–70%This is enough for an apartment, and the router will heat up and consume less power.

Disable the guest network | Set a timer to turn off Wi-Fi at night | Update the firmware | Switch desktop devices to cable | Reduce the signal transmission power -->

4. Use a Wi-Fi timer

   Many routers (for example, ASUS or Keenetic) allow you to set a Wi-Fi schedule. Turn it off during bedtime or when no one is home: Wireless Network → Timer.

5. Replace your router with a more energy-efficient one

   If your router is older than 5 years, it likely consumes 30-50% more power than modern routers. For example, TP-Link Archer AX10 (8 W) more economical TP-Link TL-WR740N (12 W) at the same speed.

6. Move the router to a cool place

   When overheated, the router's processor operates at higher frequencies, which increases power consumption. Avoid placing it near a radiator or in direct sunlight.

7. Turn off the backlight

   Some models (for example, Netgear Nighthawk) LEDs consume up to 1–2 watts. Disable them in the settings: System → LEDs → Off.

What to do if the router is consuming too much power?

If your router suddenly starts using 30-50% more power than usual, there may be a number of possible causes:

1. Malware infection — Some viruses use the router for mining or DDoS attacks.

2. Power supply failure - Check if it is getting hotter than usual.

3. Firmware failure - try resetting the settings to factory settings (Factory settings → Reset).

4. Connecting unknown devices - check the list of clients in DHCP → Client List.

Mesh systems and powerful routers: how much power do they consume?

Mesh systems (for example, TP-Link Deco, Google Nest Wi-Fi) and gaming routers (ASUS ROG Rapture) consume significantly more energy than budget models. This is due to:

• 🔄 Several modules (in Mesh systems, each node consumes 5–15 W).
• 📡 Enhanced antennas to cover a large area.
• ⚡ Powerful processors to process traffic.

Example calculation for TP-Link Deco X20 (set of 3 units):

• Consumption of one node: 10 W.
• Total consumption: 30 W.
• Per month: 21.6 kWh (about 108 rubles at a rate of 5 rubles/kWh).

Is it worth it? Yes, if you need stable coverage over a large area (house area 150+ sq m). For a small apartment, a mesh system is overkill, and it's better to get by with a single powerful router.

⚠️ Attention: Some Mesh systems (eg. Ubiquiti AmpliFi) consume up to 20 W per node. Please check the power consumption in the technical specifications before purchasing.

How to Measure Your Router's Power Consumption: A Step-by-Step Guide

If you want to know accurate consumption of your router, rather than relying on passport information, follow these instructions.

Method 1: Using a wattmeter

1. Buy wattmeter (costs from 500 rubles, for example, Robiton PM-1 or Elitech SP 301).
2. Connect the router to the wattmeter, and the wattmeter to the outlet.
3. Start the router and wait for stable readings (5-10 minutes).
4. Record the power value in watts (W).

Method 2: Smart socket with energy metering

If you have a smart plug (for example, Xiaomi Mi Smart Plug or TP-Link HS110), connect your router to it and check the data in the app. Most such devices show:

• 📊 Current power (W).
• ⚡ Consumption per day/week/month (kWh).

Method 3: Calculation by power supply

The router power supply is marked maximum power (For example, 12V 1A = 12 W). Actual consumption is usually 20–30% lower. Multiply this value by 0.7–0.8 for a rough estimate.

Example: if the power supply says 9V 1.5A, That: 9 × 1.5 = 13.5 W (maximum) → 13.5 × 0.7 ≈ 9.5 W (actual consumption).

FAQ: Frequently asked questions about router power consumption

Can a router consume power if it is turned off but plugged into a power outlet?

Yes, if the router has standby mode (standby) or a backlight that remains lit even when the power is off. For example, some models ASUS Consume up to 1–2 watts when off. To completely turn off the power, use a power outlet with a push-button switch or unplug the unit.

How does the number of files downloaded simultaneously affect consumption?

During heavy downloads (torrents, online games, 4K streaming), consumption may increase by 10-20%. For example, if a router typically consumes 10W, under heavy load this value will rise to 11-12W. However, once the download is complete, consumption will return to normal.

Does switching to a wired connection (LAN instead of Wi-Fi) save energy?

Yes, but only slightly. The Wi-Fi module consumes approximately 30–40% of the router's total power. If you connect the device via a cable, the router will save 1–3 watts. For example, if the device consumes 10 watts, switching to LAN will reduce it to 8–9 watts.

Should I buy a Wi-Fi 6 (802.11ax) router to save energy?

Yes, but only if you have a lot of devices. Technology Wi-Fi 6 optimizes traffic by reducing the load on the router's processor. For example, TP-Link Archer AX20 (Wi-Fi 6) consumes 10-15% less than TP-Link Archer C9 (Wi-Fi 5) at the same load. However, Wi-Fi 6 alone won't make a router ultra-efficient—it's the manufacturer's implementation that matters.

Is it possible to use a router with lower power to save money?

It is possible, but with some reservations. Budget routers (for example, TP-Link TL-WR840N) consume 3-5 W, but may not cope with the load if you have:

• More than 10 connected devices.
• Internet speed above 100 Mbps.
• Resource-intensive tasks are used (online games, 4K streaming).

In such cases, saving on energy will result in a drop in speed and lag.