The lights go out at an office building after most tenants have left. Emergency lighting comes on, but the property manager cannot reach the loading dock camera. The garage gate is still operating. A side entrance is not.

One outage can create several different security conditions at the same property.

Commercial property security during power outages depends on knowing which systems remain available, how access points behave, and who takes over when coverage drops. Backup power is part of that plan. So are communications, temporary procedures, and a careful check when electricity returns.

Find the Dependencies Behind Your Security Systems

Start with the functions you need to preserve: controlled entry, useful video, incident alerts, and communication with the people responsible for responding. Then trace what each function needs to work.

A network camera may receive power through an Ethernet switch. Its video may travel through additional network equipment to a recorder or remote monitoring service. If one essential component loses power, the camera can become unavailable even when other parts of the system remain online.

Consider a hypothetical loading dock camera with a powered switch but no working internet connection. Local recording might continue if the system supports it and the recording equipment is available. Remote review could still be interrupted. Recording and live monitoring need separate verification.

Have your security integrator and facilities team document the power and network dependencies for priority areas. Include equipment outside the main security cabinet, such as a switch serving garage cameras or a separate power supply for door hardware.

The useful question is specific: what must stay available for this entrance or camera view to serve its purpose?

Plan Backup Power Around Actual Security Needs

An uninterruptible power supply, or UPS, can help equipment remain powered through a short interruption or support a controlled shutdown. Its runtime depends on the connected load and battery condition. A generator may support longer operation, but only equipment served by the backup system benefits.

Do not assume that emergency lighting power also serves cameras, recording equipment, or the internet connection.

Size backup power for the equipment’s operating conditions, not just its typical power consumption. Features such as infrared illumination and heaters can increase demand. Ask qualified providers to review equipment specifications and confirm the load the backup system must support.

Test the Function You Need to Preserve

Ask qualified providers to confirm supported equipment, expected runtime, maintenance needs, and behavior during transfer to backup power. Coordinate any outage test with the people responsible for building safety and operations.

Verify more than a power indicator. Can authorized staff see live video? Is footage being recorded? Can the monitoring team receive and review configured events? Test any backup connection under the intended conditions rather than assuming it will carry the required traffic.

Document the results and revisit them when equipment changes. Adding cameras can change the load on a previously adequate backup system.

Know How Doors and Gates Behave Without Power

Electrified door hardware does not all behave alike. Fail-safe hardware unlocks when power is removed, while fail-secure hardware remains locked on the secure side. Those terms describe the hardware’s power-loss behavior; they do not replace a review of the complete door assembly and its exit function.

Have a qualified access-control professional verify each critical opening. Include pedestrian entrances, loading areas, garage gates, and any doors used by after-hours tenants. Confirm how authorized people enter if credentials or remote release become unavailable.

Safe exit remains essential. OSHA’s workplace exit-route requirements call for employees to be able to open exit doors from inside without a key, tool, or special knowledge. Temporary security measures should preserve required emergency exit functions and be reviewed for the property’s specific conditions.

Do not improvise by chaining an exit shut.

For entrances that need temporary supervision, assign responsibility and an approved access procedure. Keep fallback keys available to authorized personnel through a controlled process. A door propped open to solve a credential problem can create another gap.

Activate a Temporary Security Plan When Coverage Drops

An outage plan needs a decision maker, an after-hours contact, and a way to reach them if normal office systems are unavailable. Keep essential contact information accessible outside equipment that depends on building power.

When an outage starts, establish what is actually working. Prioritize immediate safety concerns, then review affected entrances and high-value areas. Depending on conditions, the response may include supervised access, restricted deliveries, temporary staffing, or closure under the building’s emergency procedures. Tell tenants which restrictions apply and where updates will appear.

Confirm What Remote Monitoring Can Still See

EyeQ’s Virtual Guard combines video analytics with human verification through its U.S.-based Security Operations Center. Reviewed events can lead to authorized intervention under site procedures. Those functions depend on the necessary site equipment and communications remaining available.

Agree in advance how the property and monitoring provider will handle lost connectivity, who receives notifications, and which fallback actions management owns. Around-the-clock service does not establish that every property system has backup power.

Where video remains available, EyeQ Virtual Security Checks can support review of agreed locations such as entrances, garages, and loading docks. They cannot verify a view that the outage has taken offline.

Verify Security After Power Returns

Restored lighting is only the first sign of recovery. Check that priority cameras are reachable, current footage is recording, and remote monitoring has resumed. Confirm timestamps and identify any recording gaps. Test relevant alerts and audio functions with the provider through an approved procedure.

Inspect access points, too. Remove temporary arrangements when authorized, check that doors close and latch, and verify normal credential operation. Confirm that backup equipment is ready for another interruption or flag any maintenance needed.

Keep a short outage record covering the affected systems, temporary measures, and recovery checks. If an incident occurred, preserve available evidence through the property’s process; EyeQ incident reporting services can support documentation and review.

Assign someone to close unresolved items. A missing camera view or untested entrance can remain a security gap long after the power returns. Use those findings to improve the plan before the next outage.

Strengthen Your Property’s Outage Security Plan

Reliable outage preparation connects backup power with access procedures, working communications, and verified recovery. Each part needs a clear owner.

Explore EyeQ Virtual Guard to discuss how monitoring, human verification, and security checks can fit into your commercial property’s plan, including the site dependencies needed to support those services.

Frequently Asked Questions

Do commercial security cameras work during a power outage?

They may, if the necessary cameras, power supplies, network equipment, and recording systems remain powered. Remote monitoring also needs a working communications path. Verify local recording and remote visibility separately.

Is a UPS enough to keep a security system running?

A UPS supports the equipment connected to it for a limited period. Runtime depends on load and battery condition. Review the whole system with qualified providers, including network equipment and components outside the main cabinet.

Do access-controlled doors unlock when power fails?

It depends on the hardware and system design. Fail-safe and fail-secure hardware behave differently on loss of power. Have a qualified professional verify each opening’s entry behavior and required emergency exit function.

What should managers check after electricity returns?

Verify live video, recording, timestamps, remote connectivity, relevant alerts, and access operation. Document coverage gaps, remove temporary measures when authorized, and assign follow-up for systems that have not recovered.