A battery without solar

When storage alone is the right call

• Your roof is not suitable for solar — heavy shading, unusual orientation, or a roof due for replacement.
• You rent the roof or live under an association that constrains what can be installed on it.
• Resilience is the actual goal and bill reduction is not, so the solar half of the project is not what you want.
• You plan to add solar later and want backup in place before the next hurricane season.

The limitation that matters

A battery is a bucket. Without generation, when it is empty the outage continues without you. For a short outage this is fine. For a multi-day outage after a major storm, it is exactly the scenario you bought the battery for, and it is the scenario in which storage alone runs out.

This is the single strongest argument for pairing storage with solar in Florida: not the bill, but the ability to refill each day when the grid is out for a week.

Why the bill case is weak here

In markets with steep time-of-use pricing, a battery earns money by charging when power is cheap and discharging when it is expensive. That opportunity depends on a large spread between rate periods. Florida residential customers do not generally face the kind of spread that makes this worthwhile, so buying storage primarily to arbitrage rates is unlikely to pay in this market. Check your own utility’s current residential rate options before assuming either way.