One of the biggest misconceptions about solar panels is what happens during a power outage. Many people assume that if you have solar panels, you’ll always have electricity – but that’s not automatically true. Understanding how solar systems work during outages can help you plan better for your energy needs.
Most solar systems are grid-tied, which means they’re connected to your local power grid. When the grid goes down, your solar system shuts down too, even if the sun is shining brightly. This might seem backwards, but it’s actually a safety feature. The system prevents your panels from sending electricity back to the grid while utility workers are trying to fix power lines. Without this safety shutoff, workers could be electrocuted by power coming from your roof.
If you want power during outages, you need a battery backup system or a special type of inverter. Battery systems store electricity from your panels so you can use it when the grid is down. These systems automatically kick in during an outage, powering essential items like your refrigerator, lights, and internet router. The amount of backup power you get depends on the size of your battery system and how much electricity you’re using.
Some newer solar systems come with “backup-ready” inverters that can power a few outlets during the day when the sun is shining, even without batteries. These systems create a small “island” of power that works independently from the grid. You won’t have whole-house power, but you can run a few essential devices while the sun is up.
The good news is that you can add battery backup to most existing solar systems if you decide you want it later. Many homeowners start with basic solar and add batteries down the road, especially after experiencing a long power outage. While battery systems do add to the upfront cost, they provide peace of mind and can be worth it if you live in an area prone to outages or severe weather.