Span’s Smart Panel replaces your main electrical panel with one that knows what every circuit is doing, so you can shut off or automate individual breakers from your phone and squeeze more runtime out of a battery during an outage.
Pros
- Controls every circuit individually, not just the main line — real per-breaker on/off from the app
- Automatic outage load-shedding can stretch a battery's backup runtime by up to 40%
- Clean, genuinely useful app that owners actually keep using after setup
- Works alongside solar and battery systems (Tesla Powerwall, Enphase) for smarter energy routing
Cons
- Not a universal generator transfer switch — confirm compatibility with your setup before buying
- Requires a Span-authorized licensed electrician for installation, which adds cost and lead time
- Priced well above a standard panel or subpanel upgrade
Specs
| Models | MLO 24, MLO 32, MAIN 40 |
| Circuits | Up to 32-40 smart breaker positions depending on model |
| Control | Per-circuit on/off and scheduling from the Span app |
| Compatibility | Tesla Powerwall, Enphase, and select solar + generator inputs |
| Install | Span-authorized licensed electrician required |
| Price | $2,550–$4,100 (unit only, excludes installation) |
Verdict
If you want the deepest level of control over an outage — not just knowing what's using power, but deciding what stays on — Span is the panel built for that. It costs more than a standard panel swap and needs a certified installer, but for solar and battery owners it's the closest thing to a smart home for your electrical system.