The ABB ReliaHome Smart Panel is a retrofit home energy-management system designed to add circuit-level monitoring, remote control and automated load management without requiring homeowners to replace their existing electrical panel.
If the product looks familiar, there is a reason. ABB acquired Lumin in 2025, and Lumin subsequently described its Smart Panel technology as being reintroduced under ABB’s ReliaHome Smart Panel name.
That history matters because you may still encounter both Lumin Smart Panel and ABB ReliaHome Smart Panel terminology when researching the product.
The bigger buying distinction, however, is architectural. ReliaHome is not a replacement breaker panel in the same way as SPAN. It installs alongside an existing load center and adds intelligence to selected circuits.
View current ABB ReliaHome Smart Panel information.
ABB ReliaHome Smart Panel at a glance
| Feature | ABB ReliaHome Smart Panel |
|---|---|
| Product type | Retrofit home energy-management system |
| Current indoor model | ABBHEM2 |
| Current outdoor model | ABBHEM2N3R |
| Existing panel replacement required | No |
| Circuit measurement and control | Up to 12 selected circuits |
| Whole-home monitoring | Yes |
| Load management | Panel Guard |
| Backup management | Off-Grid Manager |
| Battery compatibility | Designed to work with home batteries, generators and solar backup systems |
| Connectivity | Wi-Fi or Ethernet |
| Installation | Professional electrical installation recommended |
| Warranty | 10-year limited warranty |
What is the ABB ReliaHome Smart Panel?
Despite the name, ReliaHome is not simply a smarter version of a conventional breaker box.
It is a separate energy-management system installed alongside a home’s existing electrical panel.
The system measures whole-home electricity consumption while also directly monitoring and controlling selected circuits connected to ReliaHome.
That gives homeowners several capabilities:
- real-time energy monitoring;
- historical electricity-use information;
- circuit-level monitoring for selected loads;
- remote circuit control;
- scheduled circuit operation;
- automatic load management;
- battery-backup prioritization; and
- management of large electrical loads during home electrification.
The retrofit design is one of ReliaHome’s biggest advantages because the existing breaker panel can remain in place.
ABB ReliaHome and Lumin Smart Panel explained
Search for ReliaHome and you will quickly encounter references to Lumin.
ABB acquired Lumin in January 2025 after previously making a minority investment in the company. Lumin developed intelligent energy-management hardware and software designed to turn conventional residential panels into smarter energy systems.
After the acquisition, Lumin stated that the Lumin Smart Panel was reintroduced as the ABB ReliaHome Smart Panel.
The transition is not completely invisible online because Lumin’s website and support resources continue to use Lumin terminology in several places.
For buyers, the safest approach is to focus on the exact current hardware and software being quoted or sold rather than assuming every historical Lumin specification automatically applies to every ABB-branded configuration.
Current ABB ReliaHome models
Current retail listings identify two primary ReliaHome Smart Panel versions.
| Model | Installation environment | Current retail example |
|---|---|---|
| ABBHEM2 | Indoor | Approximately $2,568 |
| ABBHEM2N3R | Outdoor | Approximately $2,825 |
Retail prices change, so these figures should be treated as current reference prices rather than fixed manufacturer pricing.
The important difference is installation environment rather than a fundamentally different energy-management concept.
ReliaHome controls up to 12 circuits
ABB specifies circuit-level measurement and control for up to 12 circuits.
That is a fundamental point when comparing ReliaHome with a replacement smart panel.
You do not necessarily make every breaker in the house individually controllable. Instead, the installer connects the circuits where monitoring and active management provide the greatest benefit.
Typical candidates might include:
- air conditioning;
- heat pumps;
- water heaters;
- EV chargers;
- pool pumps;
- electric cooking equipment; and
- other large household loads.
ABB specifically warns against using the system to control life-safety equipment such as fire alarms, medical equipment or elevators.
Whole-home energy monitoring
ReliaHome measures total consumption at the electrical panel as well as the consumption of circuits connected directly to the smart panel.
Loads that are not directly controlled still contribute to the whole-home total.
The software therefore separates directly measured circuits from the remaining household consumption.
This gives ReliaHome some of the visibility associated with a whole-home energy monitor while adding active circuit control.
If monitoring is your only requirement, however, a dedicated energy monitor remains a much simpler category of product. Our Refoss EM16 Energy Monitor Review covers that alternative.
What is Panel Guard?
Panel Guard is ABB’s intelligent load-management system for ReliaHome.
Its purpose is to keep household electrical demand within a configured capacity by dynamically managing selected loads.
This becomes particularly relevant when homeowners want to add equipment such as:
- an EV charger;
- a heat pump;
- an electric water heater;
- an induction range; or
- other high-demand electrical appliances.
Without active energy management, adding substantial new electrical loads can sometimes lead to a larger panel or utility-service upgrade.
Panel Guard provides another possible design approach by managing when selected loads are allowed to operate.
That does not mean ReliaHome increases the electrical service capacity supplied to the house.
Instead, it manages household demand so selected loads can be coordinated within the available electrical limit.
Whether this can avoid a service upgrade in a particular home depends on the electrical design, installation and applicable local requirements.
Panel Guard and backup management are different
As with SPAN, it is useful to separate normal load management from outage management.
Panel Guard is intended to dynamically manage electrical demand around the home’s available capacity.
Off-Grid Manager is focused on what happens when the home is operating from backup power.
The two solve related but different problems.
Battery backup and Off-Grid Manager
ReliaHome’s Off-Grid Manager can manage circuits during a power outage to help avoid overloading a battery inverter and extend available backup runtime.
Circuits can be shed when:
- the grid outage begins;
- household demand exceeds a configured backup-power limit; or
- a compatible battery reaches a selected state-of-charge threshold.
This means a homeowner does not necessarily need to permanently restrict backup to only a small protected-load subpanel.
Instead, ReliaHome can dynamically control selected loads based on available backup capacity.
Battery and solar compatibility
ABB positions ReliaHome as a hardware-agnostic system designed to work with different load centers, inverters, batteries, generators and solar configurations.
There is an important qualification.
Basic compatibility with a battery system is different from direct state-of-charge integration.
State-of-charge integration requires additional communication between ReliaHome and supported battery platforms so circuit priorities can respond to the amount of stored energy remaining.
If battery integration is central to your installation, confirm compatibility with the exact battery and inverter configuration before purchasing the panel.
ABB ReliaHome vs SPAN Smart Panel
ReliaHome and SPAN both provide energy monitoring, circuit control and intelligent load management, but they approach the electrical system differently.
| Feature | ABB ReliaHome | SPAN |
|---|---|---|
| Existing panel | Retained | Typically replaced or supplemented with SPAN hardware |
| Architecture | Retrofit add-on energy-management panel | Smart electrical-panel family |
| Individually controlled circuits | Up to 12 | Depends on SPAN panel configuration |
| Whole-home monitoring | Yes | Yes |
| Load management | Panel Guard | PowerUp |
| Battery backup management | Off-Grid Manager | Backup circuit priorities |
| Best fit | Retrofit an existing panel | Major electrical upgrade, renovation or new installation |
If you are considering a complete smart-panel approach, read our SPAN Smart Panel Review.
The practical buying question is often not simply which system has more features.
If your existing electrical panel is relatively new and you only need intelligent control over selected major loads, ReliaHome’s retrofit architecture can be attractive.
If the electrical panel itself needs replacement or you want a deeper smart-panel architecture across many circuits, SPAN may make more sense.
ABB ReliaHome vs EcoFlow Smart Home Panel 3
EcoFlow approaches the problem from yet another direction.
The EcoFlow Smart Home Panel 3 is closely tied to EcoFlow’s whole-home battery ecosystem.
ReliaHome is intentionally more hardware-agnostic and is designed to work alongside an existing electrical panel.
That makes the battery ecosystem an important deciding factor.
Someone already committed to an EcoFlow backup system may reasonably favor the EcoFlow panel, while a homeowner trying to add energy management around an existing third-party battery or electrical setup may find ReliaHome more flexible.
Connectivity and the ReliaHome app
The current ReliaHome Smart Panel supports Wi-Fi or Ethernet connectivity.
The ReliaHome app provides:
- real-time energy information;
- historical energy data;
- circuit control;
- custom automations;
- load-management settings; and
- backup-power priorities.
Because software is central to the system, app support, network configuration and long-term software availability should form part of the purchase decision alongside the electrical hardware itself.
Installation
ReliaHome is designed to install beside an existing load center rather than replacing it.
ABB describes the unit as pre-wired and labeled to simplify installation and commissioning.
The manufacturer states that installation can take from roughly one hour to around two and a half hours depending on the existing electrical system.
That should not be interpreted as a DIY installation recommendation.
This equipment connects directly into a home’s electrical distribution system, so installation should be handled by an appropriately qualified electrician following ABB documentation and applicable electrical requirements.
How much does ABB ReliaHome cost?
At the time of this review, major U.S. retail listings put the indoor ABBHEM2 at roughly $2,568 and the outdoor ABBHEM2N3R at roughly $2,825 before installation.
Actual project cost can be higher once you include:
- electrical labor;
- permits where required;
- wiring modifications;
- integration with batteries, solar or generators; and
- other project-specific electrical work.
The correct comparison is therefore the total installed project cost, not just the price of the ReliaHome hardware.
What ABB ReliaHome does well
- Retrofit architecture: you can keep an existing load center rather than automatically replacing it.
- Universal positioning: ABB designed the platform to work around different panel and backup-power ecosystems.
- Load management: Panel Guard provides active control for electrification projects.
- Battery optimization: Off-Grid Manager can dynamically shed loads during outages.
- Whole-home visibility: ReliaHome monitors total household consumption as well as selected controlled circuits.
- Indoor and outdoor versions: current hardware covers both installation environments.
- 10-year warranty: ABB provides a substantial current limited-warranty period.
What to consider before buying
- Only selected circuits are directly controlled: the current system manages up to 12 circuits rather than making every breaker independently smart.
- It is still a significant investment: hardware alone costs several thousand dollars.
- Professional electrical work is required: this is not a plug-and-play smart-home accessory.
- Battery integration varies: basic compatibility and direct state-of-charge integration are not the same thing.
- Brand naming is confusing: both Lumin and ABB ReliaHome terminology remain visible online.
- Monitoring-only buyers have cheaper options: a dedicated home energy monitor may be sufficient if you do not need circuit control or load management.
Who should consider ABB ReliaHome?
ReliaHome makes the strongest case for homeowners who already have an electrical panel they would prefer to keep.
It is especially interesting if you are:
- adding an EV charger;
- adding a heat pump or electric water heater;
- installing or expanding battery backup;
- adding solar;
- trying to manage large loads within existing electrical capacity;
- looking for smarter outage prioritization; or
- interested in energy management without replacing the entire breaker panel.
Who should skip it?
If your current electrical panel already needs replacement, it makes sense to compare ReliaHome’s retrofit approach with a full smart-panel system before deciding.
Likewise, if you want independent control over substantially more than 12 circuits, ReliaHome’s architecture may be more restrictive than alternatives designed around a larger number of smart circuits.
Finally, if you only want energy-usage information, spending several thousand dollars on an active energy-management system is difficult to justify.
Final verdict
The ABB ReliaHome Smart Panel occupies an interesting middle ground between a basic energy monitor and a complete replacement smart electrical panel.
Its main advantage is that it can add meaningful intelligence to an existing electrical system without requiring the existing load center to be removed.
For a broader comparison of retrofit, replacement and modular systems, see our Best Smart Electrical Panels guide.
Panel Guard adds active demand management for electrification, while Off-Grid Manager provides a separate layer of battery-backup control during outages.
The tradeoff is circuit count. Up to 12 directly controlled circuits is enough for major household loads but is not equivalent to turning every circuit in a large home into an individually managed smart circuit.
For a homeowner with a good existing panel who wants EV, heat-pump, battery or solar integration without a complete panel replacement, ReliaHome deserves serious consideration.
For projects where the electrical panel itself is due for replacement, comparing ReliaHome directly with SPAN and other full smart-panel systems makes more sense.
View current ABB ReliaHome Smart Panel details.
Frequently asked questions
Is ABB ReliaHome the same as the Lumin Smart Panel?
ABB acquired Lumin in 2025, and Lumin subsequently stated that the Lumin Smart Panel was reintroduced under the ReliaHome Smart Panel name. Lumin terminology and resources remain visible online, so buyers should verify the exact current model and documentation supplied with their system.
Does ABB ReliaHome replace the electrical panel?
No. ReliaHome is designed to complement an existing load center and can be installed alongside different brands of electrical panel.
How many circuits can ReliaHome control?
ABB specifies measurement and control for up to 12 selected circuits.
What are the current ABB ReliaHome models?
Current retail listings identify the ABBHEM2 indoor model and ABBHEM2N3R outdoor model.
What is ABB Panel Guard?
Panel Guard is ReliaHome’s dynamic energy-management feature. It manages selected household loads to keep electrical demand within a configured limit.
What is Off-Grid Manager?
Off-Grid Manager is designed for battery-backup operation. It can shed selected circuits based on grid status, backup-system power limits and, with supported integrations, battery state of charge.
Does ReliaHome work with solar and batteries?
Yes. ABB positions ReliaHome as compatible with solar, home batteries, generators and different inverter systems. Direct battery state-of-charge integration is available only with supported integrations.
Does ReliaHome work with any electrical panel?
ABB states that ReliaHome can work alongside any brand of load center.
How much does ABB ReliaHome cost?
At the time this review was prepared, the indoor ABBHEM2 was listed around $2,568 and the outdoor ABBHEM2N3R around $2,825 before installation. Retail pricing can change.
How long does installation take?
ABB states that installation can take approximately one to two and a half hours depending on the existing electrical panel and installation conditions.
Is ABB ReliaHome better than SPAN?
They solve the problem differently. ReliaHome is particularly attractive when you want to keep an existing electrical panel and manage selected circuits. SPAN is a broader smart electrical-panel family and can make more sense when a panel replacement or deeper circuit-level architecture is already part of the project.