2,400 watts of solar panels sit on my roof, paired with a 10kWh lithium iron phosphate battery in the garage. Each morning I check the app before coffee, and the most satisfying change has been seeing the battery cover our evening load instead of buying expensive grid power.

Before storage, our electricity bill averaged about $185 monthly, mostly because dinner, laundry, and air conditioning ran after sunset. Now the battery charges from solar by early afternoon. It usually reaches 100% around 2:30, then carries the refrigerator, lights, Wi-Fi, and heat-pump water heater through the evening peak. Our bill has settled near $70, although weather and utility rates make the exact savings vary. In a sunny month, I estimate we save roughly $100 to $120.

The setup was less intimidating than expected. I hired an electrician to install the inverter, battery disconnect, and monitoring meter, but I handled the app settings myself. The only confusing part was finding the right charging equipment for a small backup battery I keep in my workshop. The label recommended a "12v lithium battery charger", while my main home system uses a high-voltage battery charger built into the inverter. Reading that twice prevented me from connecting the wrong charger and possibly damaging the cells.

During the first week, I noticed the battery stopped discharging at 30% overnight. I initially thought the solar inverter had failed, but the app showed a backup reserve setting. I raised the usable minimum to 15%, and the system immediately supplied more of our evening load. I kept the reserve afterward because we get short outages during winter storms.

What I appreciate most is not having to think about peak-hour electricity anymore. The battery quietly charges, and the house uses that stored energy when rates climb. I’m satisfied.