Solar panels do i need a battery in case of outage

[LonArcvarden]

Our house is in suburban Chicago with very infrequent outages of any kind in the 10 years we have lived there. I think the longest has been a few hours. But things do happen so I assume a battery is needed? The solar panels net credits incentives will be 3k and battery net will be 7k with a week of power. So my pay back period is 11 years with the battery but less than 4 years without. The battery will partially power the house. I believe i choose 5 critical items to power. They offer a tesla power wall. A full house requires 2 or 3 total batteries.

I think for peace of mind a battery is needed?

[MichaelSavan]

It's probably not worth it. It'll be cheaper to get a gasoline generator for those few occasions if you truly can't live without power.

[princemeraj]

I had a similar project recently and keeping the setup efficient came down to choosing gear that was easy to combine and scale. I ended up getting my panels and storage through raylyst.eu because their team helped me match components without overpaying or overbuilding. They also sorted the logistics, which saved me a ton of hassle. If you're aiming for smooth installation and long-term reliability, that kind of support really makes a difference.