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Solar Battery Storage Guide — Missouri 2026

By Kyle Bates, proSOLAR • 8 min read • Mar 1, 2026

Battery storage has transformed from a luxury add-on to a practical home energy solution. This guide compares the three leading systems — Tesla Powerwall, Enphase IQ Battery, and SolarEdge Energy Bank — and explains when battery storage makes financial and practical sense for Missouri homeowners.

Why Missouri Homeowners Are Adding Battery Storage

Missouri's utility grid reliability has been a growing concern, especially after ice storms and severe summer thunderstorms. A solar battery system keeps your home powered during outages — automatically, without generator noise or fuel costs. Combined with Missouri's net metering, a solar + battery system also enables time-of-use optimization: charging from solar during the day, discharging during peak-rate evening hours.

Tesla Powerwall 3: Whole-Home Backup

Powerwall 3 provides 13.5 kWh of usable storage with 11.5 kW continuous output — enough to power most critical home systems continuously. It integrates with Tesla's ecosystem and includes whole-home backup through an automatic transfer switch. proSOLAR is a Tesla Powerwall certified installer, which is required to offer the full 10-year warranty. One Powerwall costs approximately $8,000–$11,000 installed before the 30% ITC.

Enphase IQ Battery 5P: Modular Flexibility

Enphase’s IQ Battery 5P stores 5 kWh per unit and can be stacked for larger capacity. Its key advantage is modularity — start with one unit and add more later. It integrates seamlessly with Enphase microinverter systems.