Commercial electrical
Planning Backup Power for Business Continuity
Identify essential operations, define an outage plan, and evaluate generator support with the right safety and maintenance responsibilities.
Published Guide updated
Original planning guide published October 15, 2026, using the primary sources below. It consolidates related topics from the previous website without reproducing those articles or presenting this guidance as a completed project.
Begin with the operation, not the generator rating
List what must continue during an outage, what can stop safely and how long the interruption can last. Communications, refrigeration, access systems, data equipment and other business functions may have different needs. Separate ordinary business continuity from any legally required emergency or life-safety system; the latter needs its own qualified design and approval.
Ready Business treats outages as an organizational planning issue. Electrical backup is only one part of that plan. Assign responsibility for employee communication, shutdown decisions, customer notices, deliveries and reopening. A generator does not by itself restore internet service, provide staffing or make an unsafe building suitable for occupancy.
Have the electrical system and loads evaluated
Provide the project team with an equipment list and the operation you expect to maintain. Ask it to verify the selected loads, starting requirements, transfer arrangement and any loads that must remain off. Do not select equipment solely by adding labels or assuming the entire service should be supplied.
Discuss equipment placement, access for maintenance, fuel arrangements, ventilation, environmental conditions and required approvals. The proposal should state the intended operating duration and what assumptions that duration depends on. Existing panel and service information is part of the assessment, not proof that a particular generator or connection will be suitable.
Keep portable-generator hazards separate from planning
Portable fuel-powered generators produce carbon monoxide and must never be used indoors or in partially enclosed spaces. CDC guidance calls for operating them outdoors at least 20 feet from doors, windows and vents. Follow the equipment instructions and professional site requirements; opening a garage door does not make indoor operation safe.
Never feed building wiring by plugging a generator into a wall outlet. CPSC warns against this dangerous backfeeding practice. Connections to a building require an appropriate professionally installed transfer arrangement. If safe placement and connection cannot be established, do not improvise a temporary setup. Stationary systems have their own installation requirements; portable-generator guidance is not a substitute for their design.
Plan for the gap and the limits
Identify any equipment that cannot tolerate the delay before backup becomes available. Ask the relevant equipment provider whether separate ride-through protection or a controlled shutdown is needed. Document which outlets or loads have backup support so staff do not assume every device will work during an outage.
Include a response for a failure to start, exhausted fuel, a persistent alarm or an outage longer than the planned duration. Employees should know who makes the shutdown decision and whom to call. The continuity plan should remain usable when the person who normally manages the equipment is unavailable.
Test the plan and maintain the equipment
Arrange a supervised acceptance test that demonstrates the agreed transfer and load behavior without disrupting essential operations unexpectedly. Keep the test results, manuals, inspection documentation and maintenance schedule together. Assign a responsible person to track service and training. Revisit the plan when loads, occupancy or business priorities change; backup power is an operating responsibility as well as an installation.