Shelly EM
Shelly EM is one of the easier products to recommend for homeowners who want to start monitoring electricity use without rebuilding the entire panel setup. It is especially useful for single-phase monitoring, large circuits, and Home Assistant users who want a more approachable entry point.
Why people like it
- It is easier to retrofit than many DIN-rail Modbus meters.
- It works well in smart-home environments.
- It is useful for tracking a main supply, solar-related flow, or a major load such as EV charging or air conditioning.
Best fit
Shelly EM makes the most sense if you:
- have a simpler single-phase setup,
- want to add Home Assistant later or immediately,
- and prefer a product that feels closer to a modern smart-home device than an industrial meter.
Where it is less ideal
- It is not the first choice for larger three-phase whole-home systems.
- If your solar installer expects a specific Modbus companion meter, this may not be the cleanest route.
Bottom line
Shelly EM is a strong pick for homeowners who want useful energy data without diving straight into the more demanding side of panel-based Modbus hardware.