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Why a smart panel matters
A traditional electrical panel is dumb. It distributes power from the utility to your circuits through mechanical breakers, and that's it. If the power goes out, your battery system either powers everything (which drains the battery fast) or powers a fixed set of "essential loads" circuits you've pre-wired into a subpanel (which means you can't change what's backed up without rewiring).
A smart panel replaces that dumb distribution with per-circuit monitoring and remote control. Suddenly your home energy system can: (1) automatically shed non-essential loads (HVAC, water heater, EV charger) when the battery's state-of-charge drops below a threshold, extending backup duration from hours to days; (2) shift discretionary loads (dishwasher, EV charging, pool pump) to off-peak hours automatically based on your TOU rate plan; (3) provide real-time per-circuit data so you actually understand your consumption; and (4) integrate with solar and storage systems for intelligent energy routing.
In 2026, three smart panels dominate the U.S. residential market: the Span Panel, the Lumin Smart Panel, and the Schneider Square D Energy Center. Each takes a slightly different approach, and the right choice depends on whether you're building new, retrofitting, and which (if any) battery ecosystem you're already committed to.
Side-by-side comparison
| Feature | Span Panel | Lumin Smart Panel | Schneider Square D Energy Center |
|---|---|---|---|
| Type | Full panel replacement (200A) | Add-on subpanel (retrofit) | Full panel replacement (200A) |
| Circuit count | 32 spaces | Up to 24 managed circuits | Up to 32 spaces |
| Per-circuit monitoring | Yes (all circuits) | Yes (managed circuits) | Yes (all circuits) |
| Remote control / load shedding | Yes (per-circuit) | Yes (managed circuits) | Yes (per-circuit) |
| Solar integration | Native (SolarEdge, Enphase, Tesla) | Compatible (most systems) | Native (Schneider Solar) |
| Battery integration | Span Drive, Tesla Powerwall, Enphase, FranklinWH | Works with any battery via dry contacts | Schneider Home Battery, SolarEdge |
| EV charger integration | Span Drive, Tesla, Wallbox | Yes (load management) | Schneider EVlink |
| Typical installed cost | $4,500–$6,500 | $2,500–$4,000 | $4,000–$5,500 |
| Best for | New construction or panel replacement | Retrofitting onto existing panel | Schneider ecosystem customers |
Span Panel — best overall
The Span Panel is the smart panel that turned the category from a niche curiosity into a mainstream home energy upgrade. It's a full 200A main panel replacement with 32 spaces, per-circuit monitoring and control on every circuit, and native integrations with the major solar and storage ecosystems (Tesla Powerwall, Enphase, FranklinWH, SolarEdge). The user-facing Span app is the most polished in the category — you can view real-time per-circuit consumption, manually toggle any circuit remotely, set up automated load-shedding rules, and see historical trends.
The Span Panel's standout feature is Span Drive, the company's own EV charger that integrates natively with the panel. With Span Drive, the panel can dynamically allocate power between the EV charger and other household loads — meaning you can charge your EV at the maximum safe rate without worrying about tripping your main breaker when the AC kicks on. This dynamic load management is genuinely transformative for homes with 100A or 200A service that can't justify a panel upgrade.
The Span Panel costs $4,500–$6,500 installed, which is meaningful money. It's most cost-effective when you're already planning a panel upgrade (e.g., your existing panel is <200A or you're adding a battery that requires one anyway) — in that scenario the Span premium is only $2,000–$3,000 over a dumb panel upgrade. For new construction, Span is increasingly being specified by architects and builders as the default.
Best for
- New construction homes
- Homes needing a panel upgrade anyway
- Tesla Powerwall or Enphase battery owners
- EV owners who want integrated charger load management
Lumin Smart Panel — best retrofit
The Lumin Smart Panel takes a different approach: instead of replacing your existing main panel, it's installed as an add-on subpanel that sits between your main panel and a set of "managed" circuits. You (or your electrician) move the circuits you want smart control over — typically the EV charger, water heater, HVAC, pool pump, and other large discretionary loads — from the main panel into the Lumin subpanel. The Lumin then provides per-circuit monitoring and remote control of those managed circuits, while your existing main panel stays untouched.
This retrofit approach has two big advantages. First, it's roughly half the installed cost of a Span Panel ($2,500–$4,000 vs $4,500–$6,500). Second, it doesn't require utility coordination or a full panel replacement — your installer can usually complete the job in a single day with the power off for only 2–4 hours. For homes with newer main panels that don't need replacement, Lumin is the obvious choice.
The trade-off is that Lumin only monitors and controls the circuits you've moved into it. Your other circuits (lights, fridge, internet) continue to run through the dumb main panel with no per-circuit data. For most homeowners, the discretionary loads (HVAC, water heater, EV) are exactly the ones worth managing, so this is a reasonable trade-off — but it's worth knowing going in.
Best for
- Retrofitting onto an existing panel
- Homeowners who want smart features without a full panel swap
- Smaller budgets
- Homes with newer main panels (<15 years old)
Schneider Square D Energy Center — best ecosystem
The Schneider Square D Energy Center is the third major player, and it brings something the other two don't: a fully integrated Schneider ecosystem. If you go with Schneider for your panel, you can also go with Schneider for your solar inverter, your home battery, your EV charger, and your smart breaker accessories — all controlled from a single app (Schneider Home app). For homeowners who value single-vendor simplicity over best-of-breed selection, this is appealing.
The Energy Center itself is a 200A panel replacement with up to 32 spaces, full per-circuit monitoring and control, and native integration with Schneider's EVlink EV chargers, Schneider Home Battery, and Schneider Pulse solar inverters. The build quality is exceptional (Schneider is a $40B French electrical conglomerate with 180+ years of history), and the Square D QO breakers it uses are widely considered the best residential breakers on the market.
The trade-off is ecosystem lock-in. The Energy Center works best with Schneider accessories; while it can integrate with third-party batteries via standard protocols, you'll get the best experience going full-Schneider. For most homeowners this is fine — Schneider's product line is broad enough — but it's worth knowing if you already own a Tesla Powerwall or Enphase battery, the Span Panel will integrate better.
Best for
- Homeowners building a full solar-plus-storage system from scratch
- Buyers who value single-vendor accountability
- Existing Square D / Schneider electrical customers
- Commercial-quality residential installations
How to choose
After comparing all three panels across every dimension, here's our decision framework:
- If you're building new or already need a panel upgrade: Span Panel. Best-in-class software, deepest third-party integrations, and the premium over a dumb panel is only $2,000–$3,000.
- If your existing panel is fine and you just want smart features: Lumin Smart Panel. Half the cost of Span, no panel swap required, single-day install.
- If you're going all-Schneider (solar + storage + EV): Schneider Square D Energy Center. Best ecosystem cohesion, best build quality, single-vendor accountability.
- If you own a Tesla Powerwall: Span Panel (deepest Tesla integration).
- If you own an Enphase IQ Battery: Span Panel (native Enphase integration).
- If you own a SolarEdge Home Battery: Schneider Energy Center or Span — both integrate well.
Whichever you choose, make sure your installer is certified by the panel manufacturer — Span, Lumin, and Schneider all maintain installer certification programs, and using a certified installer is required to claim the warranty. Expect to add 1–2 weeks to your installation timeline for the certification check and panel ordering lead time.