Assumptions last reviewed 2026-08-27
You can back up a home without rooftop solar, but the right path depends on whether you want a portable outage kit, selected circuits, or a grid-charged hardwired battery with clear runtime limits.
Portable, critical-load, and grid-charged paths
These static examples use the same calculator engine as the home page. Treat them as quote-prep ranges, then verify final equipment, permits, and transfer safety with a qualified electrician.
Appliance-by-appliance backup with no panel work
Refrigerator, router, lights, CPAP, phone charging
Do not backfeed a home panel. Plan cords, indoor-rated use, and transfer-safe accessories.
Electrician-installed backup for selected circuits
Fridge, sump, furnace controls, network, lights, garage door
Ask whether the quote includes a critical-load panel, transfer equipment, permits, and labeling.
Hardwired backup charged from the utility grid
Most circuits for short outages with load controls
Runtime ends when stored energy is gone. Longer outages need larger capacity, load shedding, or a generator comparison.
Decision worksheet
Product research
For battery backup without solar, product research belongs after load sizing. Check usable kWh, surge watts, expansion options, and transfer-safe accessory requirements before buying.
Affiliate disclosure
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Expandable home backup power station
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Expandable portable battery system
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Delta series backup system
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Affiliate source notes
BLUETTI affiliate program reviewed 2026-05-15. Affiliate URL is only used when a configured environment URL exists; otherwise product cards must use the merchant fallback URL.
Anker affiliate program reviewed 2026-05-15. Affiliate URL is only used when a configured environment URL exists; otherwise product cards must use the merchant fallback URL.
EcoFlow affiliate program reviewed 2026-05-15. Affiliate URL is only used when a configured environment URL exists; otherwise product cards must use the merchant fallback URL.
Battery without solar FAQ
Yes. Portable batteries and hardwired stationary batteries can be charged from the grid. The tradeoff is that the battery cannot refill during an outage unless you add solar, a generator input, or another approved charging source.
A portable power station can cover essentials such as a refrigerator, router, lights, medical devices, and phone charging for short outages. It is usually not a whole-panel solution and should not be backfed without transfer-safe equipment.
A critical-load battery system is often the middle ground. An electrician backs up selected circuits through approved equipment, so the battery is smaller than a whole-home system but safer and cleaner than cord-only backup.
Runtime depends on usable kWh and the loads you keep on. Without solar recharge, large HVAC or cooking loads can drain a battery quickly, while a smaller critical-load list can stretch runtime much longer.
Do not assume a federal credit in 2026. This site defaults the federal estimate to zero and points users to official IRS and DSIRE resources because eligibility rules are time-sensitive.
IRS Residential Clean Energy Credit reviewed 2026-08-27. The current IRS page says the credit is not available for property placed in service after December 31, 2025, so the 2026 federal default remains $0 unless current law or project facts support another amount.
DSIRE state and local incentive database reviewed 2026-08-27. Use for state, local, and utility incentive lookup instead of maintaining a full incentive table in this static v1.
2026 installer and cost-guide pricing review reviewed 2026-08-27. Ranges are static planning assumptions for quote preparation, not live quotes or tax advice.