Calculate the exact battery capacity (kWh) and inverter output needed to run your home during storm blackouts, with real-time solar recharge and utility rate arbitrage.
Replenish battery capacity during daylight hours
Includes a recommended 20% depth-of-discharge safety buffer for LiFePO4 health.
When there's no storm, modern batteries save money daily by charging at low off-peak utility hours and powering your home during expensive peak hours:
For continuous multi-day blackouts, central air conditioning, well pumps, or subpanel transfer switches, hardwired whole-home battery systems (Tesla Powerwall 3, Enphase IQ Battery 5P, FranklinWH) deliver seamless, automatic backup power.
Lights and appliances stay powered instantly without flickering or dropouts.
Standalone batteries (3+ kWh) qualify for Section 25D credits without needing solar.
Get paid hundreds annually by exporting battery power during utility peak events.
Compare quotes from licensed installers vetted for code compliance and safety.
Compare bids from certified Tesla Powerwall, Enphase, and FranklinWH installers in California.
Compare Battery Quotes in California →Systems matched to your calculated capacity. Powered by automotive-grade LiFePO4 cells rated for 3,000+ cycles (10+ year lifespan).
Running watts is the continuous power an appliance draws. Motor-driven appliances (refrigerators, AC compressors, and sump pumps) require a brief 2x to 3x electrical surge for 2 seconds when the motor kicks on. Your battery inverter must handle this surge.
Lithium Iron Phosphate (LiFePO4/LFP) is chemically non-combustible and withstands 3,000 to 4,000 charge cycles before reaching 80% capacity (10+ years of daily use), compared to standard lithium batteries which degrade in 500 cycles.
Yes. Mid and whole-home units (like the EcoFlow DELTA Pro and Anker SOLIX F3800) feature 240V output and connect directly to a manual transfer switch or critical loads panel via a standard generator inlet cord.