Quick answer
A home battery is worth a serious look when you need outage backup, face high evening time-of-use rates, or get weak export credits for midday solar. Size usable kWh to the loads you must keep on. Do not size by brand slogans.
Batteries are a second project next to solar. That is the most important sentence on this page. A fair solar price can become a confusing package if storage is buried inside a monthly payment with no cash breakdown.
Use this hub to move in order: clarify your goal, estimate backup needs, read product notes, then decide whether to buy storage now or leave a clean path to add it later.
Core battery guides on this site
- Best home solar batteries 2026 — how to shortlist without fan wars
- Tesla Powerwall 2 review — capacity, use cases, and honest limits
- Can a house run 100% on solar? — independence vs practical hybrid reality
- Battery backup calculator — load and hour thinking
Three questions before any battery deposit
- Which loads must stay on in an outage, by name?
- Does my utility pay poorly for exported midday power?
- What is the full cash price for hardware plus electrical work?
If a sales deck cannot answer those in writing, you are not ready to sign.
Solar first, battery later, or both together?
Solar first can work when the inverter and panel design leave a clean path to add storage. Both together can be cleaner when outages already stress your household. Battery alone can help time-of-use plans, but the savings math is different without solar charging.
Ask every company to show the upgrade path either way. Future you will care.
Related hubs
Price solar properly in the Costs hub. Choose installers with the Buy solar hub. New readers: Start here.