What it is
The Enphase IQ Battery is a modular home energy storage system designed to pair with Enphase microinverter-based solar installations. Each unit stores 5kWh with 3.84kW continuous output. Up to four units can be combined for 20kWh total storage. The system includes Storm Guard (automatically charges to full when severe weather is forecast), grid independence mode, and time-of-use optimization. Monitoring through the Enphase Enlighten app.
Why we picked this
Enphase microinverters already dominate the residential solar market. If your home has Enphase solar, their battery integrates seamlessly: same app, same installer, same monitoring ecosystem. The modular 5kWh units let you right-size your storage. Most households need only 10 to 15kWh for overnight backup, which is 2 to 3 units. Storm Guard is a genuinely useful feature for hurricane and wildfire regions: the system monitors weather forecasts and pre-charges to full capacity before severe events.
Key takeaways
- Modular 5kWh units stack to 20kWh, letting homeowners match storage capacity to actual usage rather than paying for oversized systems.
- Storm Guard monitors NOAA weather alerts and automatically pre-charges the battery to full capacity 24 to 48 hours before severe weather events.
- Time-of-use optimization charges from solar during peak production hours and discharges during expensive evening rates, saving $50 to $150 per month in TOU rate areas.