Switching from Grid-Tied to Battery Backup for Solar Panels: How Do I Start?
Asked by uSolarN3wb
Hey everyone! I'm new to this whole solar setup thing and need some advice. I currently have a small solar panel array that feeds power into the grid, but when there's a power outage, my panels turn off to prevent any potential shock to linemen. I'd really like to modify my system to power a small battery instead, so I can use an extension cord for lights and maybe keep a dorm fridge running for my medications during outages. I've read a lot about larger generator setups, but I can't seem to find any info on smaller configurations. My system has 12 panels that produce around 20 kWh a day in the summer and uses an Enphase inverter. I'm not super tech-savvy, but I'm eager to learn so I can explain what I want to an electrician. It feels unnecessary to spend $2k on a portable solar generator when I already have these panels on my roof. Any thoughts or advice?
Answers
The size of your setup is a factor here too! You might want to check out the EG4 products. If you want to keep selling extra power back to the grid while having battery backup, a hybrid inverter like the 12kpv or 18kpv could be the way to go. If going off-grid is more your style, the off-grid inverter is cheaper and simpler!
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Since you're using Enphase microinverters, you'll need to stick with their battery options to keep your system operational during blackouts. That's one of the trade-offs with microinverters—they require compatible batteries to work effectively when the grid goes down. Just keep that in mind when talking to a professional!
uSolarN3wb: Thanks for the heads up! I'll definitely consider that.
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uNewbieDIY: Good advice! I'm actually trying to set up the disconnect myself for easier installations.