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Your guide to solar battery options for energy independence and backup power
Essential Backup (1-2 days):
10-13.5 kWh - Covers critical loads (fridge, lights, internet, medical devices)
Partial Home Backup (2-3 days):
20-27 kWh - Essential loads plus AC/heating, major appliances
Whole Home Backup (3+ days):
30-40+ kWh - Full home power including all HVAC, appliances, EV charging
Texas Consideration:
After Winter Storm Uri 2021, many Texas homeowners opt for 20+ kWh to ensure 3+ days of backup power during extended outages.
💡 Tax Credit Tip:
Battery storage qualifies for the 30% federal solar tax credit when installed with a solar system. Standalone batteries (not paired with solar) do not qualify for the credit under current law.
Given Texas's independent ERCOT grid and history of weather-related outages, battery storage offers: