battery backup
Battery backup is the fastest-growing segment in home power. The technology has gotten dramatically better in the last three years. Prices are coming down. And for certain situations, a battery system is genuinely better than a generator.
But batteries have real limitations that the marketing glosses over. They store a finite amount of energy. They can't run your whole house for days. And the cost math doesn't always work out the way the brochures suggest.
I run both a battery system and a standby generator. Here's what I've learned about when each one makes sense.
If you're trying to decide between a generator and a battery, start with generator vs battery backup. If you've already decided on batteries, go to best home battery backup.
the big question
- generator vs battery backup The most important comparison on this site. When each option wins, when it doesn't, and when you need both.
buying guides
- best home battery backup Whole-home battery systems compared. Tesla Powerwall, Enphase, Generac PWRcell, and the rest. What I'd actually install.
- best portable power station EcoFlow, Bluetti, Jackery, Goal Zero. Portable units for essential backup. I've tested five of them.
reviews
- tesla powerwall review The most recognized name in home batteries. Is it the best? Not necessarily. Here's why.
- ecoflow delta pro review The portable power station that thinks it's a home battery. Impressively capable. Some real limitations.
- bluetti vs ecoflow The two dominant portable power station brands. Different strengths, different weaknesses.
If you live in an area with short, infrequent outages and you already have solar panels, a battery system is a great fit. If you're on well water, live in a rural area with extended outages, or need to run your whole house, you need a generator. If you can afford both, get both. That's what I did, and it's the setup I'd recommend to anyone who's serious about energy independence.