Reviewed September 2026.
Compare backup options by what they can support, how they operate, and what they require at your property. Older model specifications and blanket tax-credit comparisons have been removed from this guide; use current documentation for the exact proposed equipment.
Battery storage
A battery stores electricity for later use. Usable capacity, output, reserve settings, and supported circuits determine its practical capability. A battery installation must be designed for backup if outage operation is required. See Home Battery Storage.
Standby generators
A permanently installed generator uses fuel to produce electricity. The design must address load requirements, fuel supply, siting, maintenance, and transfer controls. Whole-home coverage depends on the design and may require load management.
Portable generators
Portable equipment requires manual operation and specific safety precautions. Never backfeed a building through a wall outlet. Have a licensed electrician plan any connection to building wiring. Read our generator connection and safety guide.
Integrated resilience
Solar, batteries, and a generator can work together when the equipment and controls are compatible and the system is engineered for that arrangement. A generator cannot simply be connected to an existing solar or battery system. Transfer controls, supported loads, charging behavior, and utility isolation must be addressed in the design.
Start with a load list
List refrigeration, heating controls, pumps, communications, and other priorities. Identify equipment that cannot tolerate any interruption. Compare installation and operating costs against a defined backup scope rather than assuming every option powers everything indefinitely.
Request an assessment with BD Electrical & Solar. Tell us about your property, existing equipment, and priorities so we can define the appropriate scope.