Smart panels are finally worth the money.
Smart panels (Span, Lumin, Schneider Square D Energy Center) add per-circuit monitoring, load shedding, and battery backup orchestration. After 3 years of installs, here's how they actually compare.
By Steven Lockhart · Reviewed by Alex Towery, C-10 #989290
Updated 2026-06-16
Smart panels replace your main panel with one that meters every circuit, allows individual circuit control via app, and orchestrates backup power loads when paired with batteries or generators. Three major options for residential: Span (most polished), Lumin (battery-focused), and Schneider Square D Energy Center (utility-grade integration). All cost $4,000-$8,000 more than a standard panel upgrade. Worth it for solar+battery homes and EV+heat pump households.
01What smart panels actually do that standard panels don't.
A smart panel meters every circuit individually (vs the whole-house metering of a standard panel), allows individual circuits to be turned off via app or schedule, and can orchestrate load shedding during outages — automatically shutting off non-critical circuits when running on battery to extend backup runtime. That last capability is the meaningful difference for households with solar+battery: a 13kWh battery that lasts 6 hours running everything can last 18+ hours running only critical circuits via smart-panel orchestration.
For households without backup power, smart panels still deliver value through per-circuit energy monitoring (identifying which circuits drive your electric bill), schedule-based circuit control (turning off non-essential circuits at night, scheduled pool pump cycles), and remote troubleshooting (diagnosing a tripped breaker from the app without going to the panel). The case is weaker without backup power but not zero.
02The three major options compared.
Span — most polished overall
Best app experience, cleanest installation, integrated solar/battery monitoring if Tesla Powerwall or Enphase. ~$3,500-$4,500 hardware premium over standard panel. Best for: solar+battery homes that want unified energy management.
Lumin — battery-focused
Lower-cost (~$2,000-$3,000 premium), focused on backup orchestration. Pairs with most major battery brands. Best for: homes adding battery backup who want load shedding without Span's full feature set.
Schneider Square D Energy Center
Utility-grade construction, broadest electrician familiarity (Schneider sells most US residential panels). ~$2,500-$3,500 premium. Best for: homes wanting smart-panel benefits with the most familiar hardware. App is functional but less polished than Span's.
03When smart panels are worth it.
Strong case: solar+battery household where backup runtime orchestration delivers real value, electrified household (EV + heat pump + induction range) where per-circuit monitoring identifies optimization opportunities, or new construction where the marginal cost of smart panel vs standard panel is smallest (no demolition required). For these households, smart panels deliver $400-$1,200/year in operational value (longer backup runtime, electricity bill reductions, automated load management).
Weak case: homes without solar+battery, no plans for major electrification, and limited interest in app-based energy management. The smart panel adds $3,000-$5,000 to project cost without delivering proportional value in these scenarios. Standard panel upgrade is the right answer.
Common questions.
Can smart panels do whole-home backup?
Yes, but with a battery system attached. Smart panels themselves don't store energy — they orchestrate which circuits get powered when paired with batteries or generators. For battery-backed whole-home: typically need 20-40 kWh of battery for sustained backup, smart panel orchestrates which circuits run during outage, and battery+inverter system handles the actual power. Smart panel cost is incremental ($3,000-$5,000) on top of battery system cost ($20,000-$40,000+).
How long does smart panel install take?
For Marin in 2026: 2-4 weeks from contract signing. Permit and PG&E coordination (1-3 weeks), install day (8-12 hours, house power off during work), inspection (typically same week). Same as standard panel upgrade timeline; smart panel doesn't add calendar time beyond standard panel upgrade scope.
What if the smart panel software has problems?
All three manufacturers have done OTA updates over the past 2-3 years that have improved stability significantly. Current generation (2024-2026 hardware/firmware) is reliable for daily use. If software issues arise, the underlying electrical functions (breakers, panel) still work — the smart features degrade gracefully to manual control. We've installed 80+ smart panels in Marin over the past 3 years and have seen relatively few persistent issues.
Will it work with my existing solar?
Yes — all three major smart panels work with existing solar arrays. Span and Schneider integrate cleanly with Tesla Powerwall, Enphase IQ batteries, and most major inverter brands. Lumin has the broadest battery brand support. We verify compatibility during quote based on your specific inverter and battery setup.
How do you handle pricing — flat fee or hourly?
Both, depending on scope. Routine service calls and predictable scope (panel replacement, EV charger install, transfer switch install, fixture replacement) are flat-fee quoted up front. Diagnostic visits and emergency scope are hourly because we don't know what we'll find. Either way, you get a written quote before work starts on anything significant, and we don't proceed beyond the quote without your sign-off.
How quickly can you schedule?
Depends on scope and season. Emergency dispatch: same-day across Marin County (1-3 hours business hours, 1-4 hours after-hours). Same-day standard service: 3-6 hours from call when capacity allows; otherwise next business day. Scheduled service work: 1-3 weeks typical. Larger projects requiring permits and PG&E coordination: 4-12 weeks depending on scope. We're upfront about timeline at the quote stage.
What warranty do you offer on work?
Our standard residential warranty: 2 years on labor, manufacturer warranty on parts (varies by product — typically 1-10 years). Major installs (panels, generators, EV chargers) often have longer manufacturer warranties (5-10 years). If there's an issue with our work in the warranty period, we come back and fix it at no cost. We also stand behind work past warranty — repeat customers and referrals matter more than a transactional fix.
Are you licensed and insured?
Yes. California State License Board C-10 Electrical Contractor #989290, in good standing. Carry general liability insurance and workers' compensation insurance as required by California law. Bondable on projects requiring it. Happy to provide proof of insurance to clients or property managers on request. License lookup: cslb.ca.gov.
Talk to a licensed electrician in Marin.
Family-run, C-10 #989290, 20+ years in the trade. Honest scoping, fair pricing, work that lasts.