A generator plan needs a load list, a safe location and professionally designed transfer equipment—not just a generator.
Generator → transfer equipment · utility and generator supplies are safely isolated.
Portable and standby solve different problems
A portable generator requires manual setup and safe outdoor operation. A standby generator is a fixed installation, typically designed to start automatically during an outage. Neither choice is automatically sized to run every load in the home.
List essential needs: a sump pump, refrigeration, heating controls or necessary medical equipment. Discuss starting loads and realistic runtime with the installer. Medical needs may also require a separate, clinically appropriate backup plan.
Transfer equipment is essential
Transfer equipment prevents the generator and utility supply from improperly energizing each other. Naperville’s utility requires suitable transfer equipment and an outside service disconnect for standby installations. Have the installer confirm the current configuration with the utility. Naperville Electric Utility: generator safety ↗
Placement and fuel are part of the design
A fixed installation needs manufacturer clearances, exhaust planning, access for service and review of applicable property requirements. Natural-gas service capacity or propane storage may introduce additional work. Ask who coordinates those trades.
Portable generators belong outdoors, at least 20 feet from the home, with exhaust directed away from buildings. Never operate one inside a home, garage or basement. Use working carbon monoxide alarms and follow the manufacturer’s instructions. CPSC: portable generator and heating safety ↗
The local permit step
Naperville requires an issued building permit before construction for generators added to a residential structure. Use the current permit page rather than relying on an old quoted fee. City generator permit ↗
Have the proposal identify the generator, transfer equipment, fuel work, placement plan and inspection responsibilities. Ask whether utility coordination changes the installation schedule.
Compare the complete ownership cost
- Equipment output and the exact loads supported.
- Installation, transfer equipment, fuel work and restoration.
- Startup testing and owner orientation.
- Routine service, consumables, warranty and remote-monitoring charges.
- Fuel availability, expected runtime and maintenance access.