Is a home battery worth it?

It comes down to two things: how much outages disrupt your life, and whether your utility offers a time-of-use rate you're willing to switch to. On a standard flat rate, a battery on its own won't lower your bill much — but it keeps you powered through storms, and paired with a rate-plan switch (or solar) it can save real money every month. (Here in Charleston that switch is Dominion's Rate 7 — more on that in how a battery lowers your bill.)

The real answer is bill-specific — a generic “you could save!” number is meaningless. That's the whole point of the analyzer: it runs your actual usage. For the full breakdown with real bills, see is a home battery worth it on Rate 7.