Does a CCTV Camera Use a Lot of Electricity When Running 24 Hours?
Before installing a CCTV camera, many people think about more than just the purchase price. Another common question is: If I leave my CCTV camera running 24 hours a day, will it use a lot of electricity?
The answer is yes, a CCTV camera uses electricity, but the amount is generally quite low, especially for compact Wi-Fi cameras that consume only a few watts. However, when cameras operate 24 hours a day, every day, and multiple cameras are installed, electricity consumption will increase according to the power consumption of each camera.
So, instead of simply asking whether a CCTV camera uses electricity, it is more useful to check how many watts (W) the camera consumes and calculate the estimated monthly energy usage.
Does a CCTV Camera Use Electricity 24 Hours a Day?
Yes. A CCTV camera needs electricity to power its image sensor, processor, infrared LEDs or color night vision system, Wi-Fi connection, and other functions while it is operating.
However, actual power consumption depends on several factors, including:
- Camera power consumption in watts
- Whether the camera operates continuously for 24 hours
- Whether infrared night vision is active
- Whether AI detection or automatic tracking is being used
- Whether the camera uses Wi-Fi or PoE
- Whether other devices are operating together with the camera
Therefore, it would be inaccurate to assume that every CCTV camera consumes the same amount of electricity.
How Many Watts Does a CCTV Camera Use?
Many CCTV cameras designed for homes and small offices consume only a few watts. However, you should always check the manufacturer's specifications for the specific model you are considering.
For example, if a camera has the following average power consumption:
| Camera Power | Operating Time | Approx. Energy per Day | Energy per 30 Days |
|---|---|---|---|
| 3W | 24 hours | 0.072 kWh | 2.16 kWh |
| 5W | 24 hours | 0.12 kWh | 3.60 kWh |
| 8W | 24 hours | 0.192 kWh | 5.76 kWh |
| 10W | 24 hours | 0.24 kWh | 7.20 kWh |
These figures assume constant power consumption to make the calculation easy to understand. Actual energy consumption can vary depending on the camera model, operating mode, and environmental conditions.
How to Calculate the Electricity Cost of a CCTV Camera Running 24 Hours
The basic calculation is straightforward.
Daily energy consumption = Power (W) ÷ 1,000 × Operating hours
If the camera operates 24 hours a day for 30 days:
Monthly energy consumption = Power (W) ÷ 1,000 × 24 × 30
You can then estimate the electricity cost using:
Electricity cost = Energy consumption in kWh × Electricity rate per kWh
The actual electricity rate depends on your electricity provider, tariff structure, and billing conditions, so use the rate shown on your electricity bill for the most relevant estimate.
Example: How Much Electricity Does a 5W CCTV Camera Use?
Suppose a CCTV camera consumes 5W and operates continuously for 24 hours.
The daily energy consumption would be:
5 ÷ 1,000 × 24 = 0.12 kWh per day
For 30 days:
0.12 × 30 = 3.6 kWh per month
You can then multiply 3.6 kWh by your electricity rate to estimate the monthly electricity cost of that camera.
The important point is that you should not treat watts as the electricity cost itself. A 5W camera does not mean that it costs 5 currency units per day. Watt (W) measures power, while electricity bills are based on energy consumption, usually measured in kWh.
What Happens to Electricity Consumption When You Have Multiple CCTV Cameras?
This is where the difference becomes more noticeable because the number of cameras directly affects total power consumption.
For example, assume each camera consumes an average of 5W:
| Number of Cameras | Total Power | Energy per 30 Days |
|---|---|---|
| 1 camera | 5W | 3.6 kWh |
| 2 cameras | 10W | 7.2 kWh |
| 4 cameras | 20W | 14.4 kWh |
| 6 cameras | 30W | 21.6 kWh |
| 8 cameras | 40W | 28.8 kWh |
This is why a home with only one or two cameras may see a relatively small increase in electricity consumption, while a larger CCTV system can consume noticeably more power once the cameras and supporting equipment are included.
Don't Forget That NVRs and Network Equipment Also Use Electricity
If you are using a CCTV system with an NVR, you should not calculate electricity consumption based only on the cameras. Other equipment may also operate continuously.
- CCTV cameras
- NVR
- PoE switch
- Router
- Wireless access point
- Hard drive used for video recording
Therefore, if you want to estimate the electricity cost of the entire CCTV system, you should include the power consumption of all major components.
Total system power = Cameras + NVR + Network equipment + Other devices
Which Uses More Electricity: Wi-Fi CCTV or PoE CCTV?
You cannot determine this simply by comparing the terms Wi-Fi and PoE. Power consumption depends on the hardware and design of each camera model.
Wi-Fi cameras designed for home use commonly use a separate power adapter, while PoE cameras can receive both power and network data through a single Ethernet cable. This can make installation and system management more convenient.
If electricity consumption is important to you, compare the manufacturer's specifications for Power Consumption, Maximum Power Consumption, or Input Power rather than choosing based only on whether the camera is Wi-Fi or PoE.
Does a CCTV Camera Use More Electricity at Night?
It can. This is particularly possible when the camera activates infrared LEDs for night vision.
When ambient light becomes low, a camera may activate IR LEDs to maintain visibility in dark conditions. As a result, power consumption can differ from daytime operation when the infrared system is not active.
However, the amount of additional power depends on the camera design, infrared range, and operating mode. Therefore, it is not accurate to assume that every CCTV camera will consume the same amount of additional power at night.
Do You Really Need to Keep a CCTV Camera Running 24 Hours?
For security purposes, keeping a camera operating continuously can be useful because it allows you to monitor and record events even when nobody is at home.
However, this does not necessarily mean that every situation requires continuous video recording.
Some cameras support Motion Detection or Human Detection, allowing the system to record or send alerts when specific events are detected.
This can reduce the amount of video that needs to be stored and may reduce storage requirements. However, the camera itself still consumes electricity depending on how its hardware and software are designed to operate.
Does a CCTV Camera Still Use Electricity If It Does Not Record Continuously?
Yes. Keeping the camera powered on and recording video are two different things.
Even if the camera is configured to record only when a person or movement is detected, the camera still needs to operate its image sensor and processing system to monitor the environment and detect events.
So, not recording continuously does not mean using no electricity. However, appropriate recording settings can reduce storage requirements and the overall workload of the recording system.
How Can You Reduce CCTV Electricity Consumption?
1. Choose a Camera With Appropriate Power Consumption
You do not always need the highest-specification camera for every location. For a small indoor area, a low-power camera with the right features may be sufficient.
2. Check Power Consumption Before Buying
Do not look only at resolution such as 2.5K, 3K, or 4K. If you plan to install multiple cameras, power consumption should also be part of your purchasing decision.
3. Position Cameras Properly
Installing cameras in suitable locations can help maximize coverage and reduce the need to add unnecessary cameras later.
4. Check All Supporting Equipment
For an NVR-based system, remember to include the NVR, hard drive, PoE switch, and router because these devices may also operate continuously.
5. Use Power-Saving Features When Appropriate
Some cameras provide power-saving functions or operating modes that reduce certain activities when there are no events. If your camera supports these features, check the manufacturer's documentation and configure them according to your actual security requirements.
How Much Electricity Does Four CCTV Cameras Use 24 Hours a Day?
Let's assume each camera consumes an average of 5W.
Four cameras would have a combined power consumption of approximately 20W.
If they operate 24 hours a day for 30 days:
20 ÷ 1,000 × 24 × 30 = 14.4 kWh
You can then multiply 14.4 kWh by your electricity rate to estimate the electricity cost.
Keep in mind that this calculation does not include the NVR, hard drive, router, or PoE switch. To estimate the actual electricity cost of the entire CCTV system, these devices should also be included.
Conclusion Does a CCTV Camera Use a Lot of Electricity When Running 24 Hours?
Yes, a CCTV camera uses electricity when running 24 hours a day, but typical home CCTV cameras are not generally high-power devices. This is especially true when you only have one or two cameras.
The most important figure to check is the camera's power consumption in watts. You can then convert it into monthly energy consumption in kWh and multiply that figure by your electricity rate.
If you have multiple cameras, remember to include the power consumption of the NVR, hard drive, router, and PoE switch as well. The electricity cost of a complete CCTV system does not come from the cameras alone.
In simple terms, when installing multiple CCTV cameras, don't look only at the purchase price. Consider electricity, storage, and network equipment together to get a more realistic picture of the long-term cost.
FAQ: Frequently Asked Questions
Does a CCTV camera use a lot of electricity when running 24 hours?
It uses electricity, but many home CCTV cameras consume only a few watts. Actual consumption depends on the model and operating mode.
How much electricity does a 5W CCTV camera use in one month?
If a 5W camera operates continuously for 24 hours a day for 30 days, it would theoretically consume approximately 3.6 kWh, or 3.6 units of electricity.
Does a CCTV camera use more electricity at night?
It can, particularly when infrared LEDs are activated for night vision. The additional power consumption depends on the camera model and operating conditions.
Do multiple CCTV cameras significantly increase electricity costs?
The number of cameras directly affects total power consumption. However, NVRs, hard drives, PoE switches, routers, and other network equipment should also be included when calculating the total system cost.
Does a CCTV camera still use electricity when it is not recording continuously?
Yes. The camera still needs power to operate its image sensor, processor, and detection functions even if recording is configured to occur only when motion or people are detected.
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