CCTV Wattage: How Much Power Does a CCTV System Use?

Understanding CCTV wattage helps you estimate electricity costs, select a suitable power supply and plan backup power for outages. The power consumption of a CCTV system depends on the camera type, infrared (IR) lighting, recording equipment, network devices and other features.

What does CCTV wattage mean?

Wattage (W) is the amount of electrical power a device uses at a particular time. A camera rated at 5 W uses about 5 watts while operating, although its actual consumption can vary depending on features such as night vision, audio, heating or pan-tilt-zoom (PTZ) movement.

Watt-hours (Wh) and kilowatt-hours (kWh) measure energy used over time. Electricity bills are generally based on energy consumption in kWh, not on a device’s wattage alone.

Typical wattage of CCTV equipment

The following figures are indicative only. Actual power requirements vary by model, operating conditions and manufacturer.

• Basic analogue or HD-over-coax camera: around 2–5 W
• Standard IP camera: around 3–10 W
• Camera with IR night vision: often around 4–12 W, with higher consumption when the IR LEDs are active
• PTZ camera: around 10–30 W or more, depending on movement, zoom and additional features
• DVR or NVR: varies considerably; hard drives, channel count and connected accessories affect its consumption
• Network switch or PoE switch: depends on the switch itself and the total power supplied to connected devices
• Monitor: consumption depends on screen size, brightness and technology

Use the product label or manufacturer’s specification sheet for the most reliable figure. Where a range is given, plan for the higher value.

Why can a camera’s power consumption change?

• Night vision: IR LEDs usually draw more power when switched on in low light.
• PTZ operation: motors can increase power draw while the camera is moving or zooming.
• Built-in heaters or fans: outdoor cameras may use additional power in certain conditions.
• Audio and analytics: microphones, speakers and advanced processing features may add to consumption.
• Accessories: external illuminators, wireless bridges and other connected equipment need to be included in the overall calculation.

How to calculate CCTV electricity consumption

Use this formula to estimate daily energy use:

Daily energy (kWh) = Total wattage (W) × Hours used ÷ 1,000

For example, a 6 W camera operating continuously for 24 hours uses:

6 × 24 ÷ 1,000 = 0.144 kWh per day

That is approximately 4.32 kWh over 30 days. To estimate the running cost, multiply the monthly kWh by the per-unit electricity rate on your bill. The actual rate varies by location, tariff and provider.

Example: estimating the power for a CCTV setup

Suppose a system has four cameras, each rated at 6 W, and a recorder using 25 W. The estimated total is:

(4 × 6 W) + 25 W = 49 W

If the system runs continuously, its estimated daily energy use is:

49 × 24 ÷ 1,000 = 1.176 kWh per day

This estimate does not include a monitor, router, switch or other accessories. Add their wattage for a more complete calculation. Actual use may also differ from the ratings, particularly when IR lighting or PTZ functions are active.

Choosing a power supply

For cameras using a separate DC power supply, check both the required voltage and the current rating. A camera designed for 12 V DC must be connected to a compatible 12 V supply. The supply should provide enough current for all connected cameras, including their higher-demand operating conditions.

For example, if four cameras each require up to 0.8 A at 12 V, the combined requirement is 3.2 A. Allow suitable capacity above the calculated total and follow the equipment manufacturer’s guidance. Do not choose a supply based on wattage alone: voltage, polarity, connector type and cable voltage drop also matter.

PoE camera wattage

Power over Ethernet (PoE) carries both data and power over an Ethernet cable. When planning a PoE system, check the maximum power required by each camera and the total PoE budget of the switch or injector. The switch’s overall PoE capacity must be sufficient for all connected devices, with allowance for cameras that use more power at night or during PTZ movement.

Also check the supported PoE standard and the camera’s requirements. A camera may connect to a switch but still fail to operate correctly if the available power is insufficient.

Planning CCTV backup power

To estimate the load for a UPS or other backup system, add the wattage of every device that must remain on during an outage. This may include cameras, the recorder, a PoE switch, router and modem.

Backup runtime depends on the UPS capacity, battery condition, total load and conversion losses. A UPS’s VA rating is not the same as its usable watt capacity, so check both specifications and use the manufacturer’s runtime guidance. For longer backup requirements, seek advice from a qualified installer.

Tips for managing CCTV power consumption

• Choose cameras with features suited to the site rather than paying for functions that are not required.
• Check camera and recorder specifications before installation.
• Include night-time IR use and other peak-demand features in power calculations.
• Use compatible, good-quality power supplies and PoE equipment.
• Have wiring and power supplies installed safely, especially in outdoor locations.
• Measure the system’s actual consumption with a suitable power meter if a precise estimate is needed.

Conclusion

CCTV wattage varies from one system to another. A small fixed camera may use only a few watts, while a PTZ camera or a complete recorder-and-network setup can require considerably more. For accurate power and cost estimates, check the equipment ratings, add the wattage of all devices, allow for peak operating conditions and calculate energy use in kWh.

5 Benefits of Understanding CCTV Wattage

1. Helps estimate electricity costs.
2. Supports the right power supply choice.
3. Makes UPS backup planning easier.
4. Highlights energy-efficient CCTV options.
5. Prevents overloads in PoE systems.

5 CCTV Wattage Drawbacks to Consider

1. Higher-wattage cameras increase electricity costs.
2. IR night vision can raise power consumption.
3. PTZ cameras may need a larger power supply.
4. Power requirements vary between camera models.
5. Backup batteries may run out sooner with higher loads.

Helps estimate electricity costs.

Knowing the wattage of your CCTV equipment makes it easier to estimate its electricity costs. Add the wattage of the cameras, recorder and any other connected devices, then calculate how many kilowatt-hours the system uses over a day or month. Multiplying this figure by your electricity tariff gives an approximate running cost, helping you budget for continuous surveillance and compare energy use between different systems.

Supports the right power supply choice.

Knowing the wattage of your CCTV cameras helps you choose a power supply with the correct capacity for reliable operation. By checking each device’s voltage and power requirements, you can ensure the supply can support the cameras and any connected equipment, including periods when infrared night vision or PTZ functions use more power. This helps reduce the risk of power-related interruptions and supports the safe, dependable running of your CCTV system.

Makes UPS backup planning easier.

Knowing the wattage of your CCTV equipment makes UPS backup planning easier. By adding the power requirements of the cameras, recorder, PoE switch and network devices, you can estimate the total load and choose a UPS with suitable capacity. This helps you plan how long the system can keep operating during a power cut and reduces the risk of selecting a backup unit that cannot support all connected equipment.

Highlights energy-efficient CCTV options.

Understanding CCTV wattage makes it easier to identify energy-efficient cameras and equipment. By comparing the power ratings of different models, you can choose a system that meets your security needs while using less electricity. Features such as efficient infrared lighting and low-power operation can help reduce ongoing energy consumption without compromising surveillance coverage.

Prevents overloads in PoE systems.

Knowing the wattage of each CCTV camera helps prevent overloads in a Power over Ethernet (PoE) system. By adding the cameras’ power requirements and comparing the total with the switch’s PoE budget, you can check that the equipment can supply enough power to every connected device. This supports reliable operation and reduces the risk of cameras disconnecting or failing, particularly when night-vision or PTZ features increase power demand.

Higher-wattage cameras increase electricity costs.

Higher-wattage CCTV cameras use more electricity, which can increase running costs—especially when several cameras operate around the clock. Features such as infrared night vision, PTZ movement and built-in heaters may raise power consumption further. When choosing a system, compare each camera’s wattage and consider its long-term electricity use alongside its purchase price.

IR night vision can raise power consumption.

IR night vision can increase CCTV power consumption because the camera’s infrared LEDs switch on in low-light conditions to capture images after dark. This extra demand may raise the system’s overall energy use, particularly when several cameras operate overnight. When planning a CCTV installation, check each camera’s night-time power rating and ensure the power supply or PoE switch has enough capacity for all cameras with IR enabled.

PTZ cameras may need a larger power supply.

PTZ cameras can consume more power than fixed CCTV cameras, particularly when the pan, tilt and zoom motors are in use. This means they may require a higher-capacity power supply or PoE switch, adding to installation costs and making power planning more important. If the supply cannot meet the camera’s requirements, the camera may operate unreliably or lose features such as movement and zoom. Always check the manufacturer’s specifications and allow for peak power consumption when selecting a suitable supply.

Power requirements vary between camera models.

One drawback of CCTV wattage is that power requirements vary between camera models. A basic camera may need only a small amount of power, while models with infrared night vision, PTZ movement, heaters or other advanced features can require considerably more. This can make it harder to choose the right power supply or PoE switch, particularly when cameras are mixed in one system. Check each camera’s specifications and allow for its maximum power demand to help avoid unreliable operation.

Backup batteries may run out sooner with higher loads.

Higher CCTV wattage can drain backup batteries faster, reducing how long cameras, recorders and network equipment continue working during a power cut. Devices such as PTZ cameras, infrared illuminators and PoE switches can add to the total load, so it is important to include their peak power requirements when estimating battery runtime. Choosing a suitably sized backup system and checking its expected runtime can help maintain surveillance for longer during outages.