Essential backup
Keep refrigeration, lights, internet, outlets, and other essentials running.
- Critical-load panel
- Runtime scenarios
- Solar recharge options
Battery backup
Keep the power on when the grid goes down.
Choose what you want backed up. We’ll size the battery system for the way your home uses power.
How outage backup works
Solar alone usually does not power your home during a grid outage.
Most grid-tied solar automatically shuts down to prevent dangerous backfeed. A compatible battery and isolation equipment can create a safe backup system for selected circuits or a larger portion of the home.
The right design depends on how much energy your priority loads use, how long you want to support them, battery capacity, state of charge, and whether solar can recharge during the outage.
Read the outage guide →Current battery models · reviewed July 2026
Compare how each battery works with the rest of the system.
These are the current models we plan around. Every platform has a different balance of stored energy, instantaneous power, solar integration, controls, monitoring, expandability, and warranty.
Powerwall 3 + Expansion
Model: Powerwall 3 · Powerwall 3 ExpansionTesla's current integrated battery platform, with a lower-cost expansion option for added runtime.
Explore Powerwall 3 + Expansion →
aPower S
Model: aPower S · APRS-10K15V1-USFranklinWH's newest all-in-one battery with direct solar connection and an integrated hybrid inverter.
Explore aPower S →
aPower 2
Model: aPower 2High-capacity, high-output storage built around flexible whole-home energy management.
Explore aPower 2 →
IQ Battery 10C
Model: IQBATTERY-10C-1P-NAEnphase's current 10 kWh battery, built for higher power and the fourth-generation Energy System.
Explore IQ Battery 10C →
OCEAN Pro
Model: Battery EF-BP-10 · Hybrid inverter EF-PCS-24A scalable, multi-source home-energy system designed for demanding whole-home backup goals.
Explore OCEAN Pro →Model availability can change. Your written proposal will identify the exact battery, inverter, controller, quantity, and configuration included in your project.
Choose what stays on
What do you need the battery to do?
More of the home
Support more circuits with load controls and enough storage for your priorities.
- Load controls
- Multiple batteries
- HVAC evaluation
Smarter energy use
Use stored solar power when it matters most.
- Monitoring
- Utility configuration
- Future expansion
Questions we model
Battery runtime changes with the loads you use.
- Which circuits must remain available?
- What is the maximum simultaneous power draw?
- How many hours or days of support are you targeting?
- Will solar be available to recharge during daylight?
- Do you want automatic load controls?
- What utility and permitting rules apply to the configuration?
Florida storm planning
A battery can make outages quieter and more manageable, but it is not unlimited power. We help you separate must-have loads from nice-to-have loads and plan for conservative scenarios.