Your energy sources are the foundation of AION EMS Zeus.
Before Zeus can analyze your home, it needs to understand the basic energy flow between your Grid, Solar system, Battery and House. These measurements allow Zeus to calculate production, consumption, import, export, self-consumption and many of its advanced statistics.
For the best results, configure these core measurements first before adding individual household devices.
Before You Start
Your solar inverter, smart meter and battery should already be connected to Home Assistant through their normal integrations.
Zeus does not communicate directly with the inverter or meter. It uses the entities that Home Assistant already provides.
Depending on your installation, you may have all three components or only some of them:
Grid Meter · Solar / PV · Battery Storage
A battery is optional. Zeus can operate perfectly well with a solar and grid system without storage.
Step 1 — Open Energy Configuration
Open AION EMS Zeus and go to the energy configuration/setup area.
Start with your Grid Meter, followed by Solar, and then Battery if your installation has one.
The exact entity names will depend on your hardware and Home Assistant integration.
Grid Meter
The Grid Meter tells Zeus whether your home is currently importing electricity from the grid or exporting surplus energy.
Select the Home Assistant entity that represents your grid power.
For example, your integration may provide:
Grid Power
or separate
Grid Import Power / Grid Export Power
Use the actual measurement from your main grid meter whenever possible.
Check the direction
After saving, look at the Command Center.
When your home is buying electricity:
Grid → House
When you have surplus solar production:
House → Grid
Make sure the direction shown by Zeus matches what is actually happening.
If the direction is reversed, correct the grid direction/sign configuration rather than choosing an unrelated sensor.
Solar / PV
Next, connect your solar production.
Select the Home Assistant power entity representing the current total PV production.
If your installation contains multiple inverters, configure them according to the Zeus setup options so that the total represents your real solar production.
Be careful not to map both an individual inverter and another sensor that already contains the combined total. That would cause solar production to be counted twice.
After saving, compare Zeus with your inverter or Home Assistant.
For example:
Home Assistant Solar: 6.2 kW
Zeus Solar: approximately 6.2 kW
Small differences caused by update timing are normal.
Battery Storage
If you have battery storage, connect the available battery measurements.
The most important measurements are:
State of Charge (SOC)
How full the battery currently is.
Battery Power
How much power is currently entering or leaving the battery.
If your integration provides them, you can also configure battery energy counters and additional measurements used by Battery Statistics.
After configuration, verify the battery direction in the Command Center.
When charging:
Solar / House → Battery
When discharging:
Battery → House
The displayed SOC should also approximately match your battery system or Home Assistant.
Step 2 — Check the House Energy Balance
Once Grid, Solar and Battery are configured, open the Command Center.
Zeus should now be able to build the basic energy balance of your home.
A simple example:
Solar: 5.0 kW
House: 3.0 kW
Battery charging: 1.0 kW
Grid export: 1.0 kW
The values do not always update at exactly the same moment because different Home Assistant integrations have different update intervals. Small temporary differences are therefore normal.
Large or persistent differences usually indicate an incorrect mapping, sign convention or duplicated measurement.
Step 3 — Check Energy Counters
Where available, Zeus can also use accumulated energy entities for historical statistics.
Typical entities include:
Solar Energy — kWh
Grid Import Energy — kWh
Grid Export Energy — kWh
Battery Charged Energy — kWh
Battery Discharged Energy — kWh
For accumulated energy sensors, Home Assistant normally reports:
device_class: energy
with a unit such as:
kWh
and commonly:
state_class: total_increasing
Do not use a power sensor measured in W or kW in a field that expects accumulated Wh or kWh energy.
Step 4 — Verify the Command Center
Before continuing with Heat Pumps, Water Heating or other devices, spend a few minutes watching the Command Center.
Check different operating situations if possible:
Solar producing
Solar should supply the house.
Solar surplus
Energy should flow toward the battery and/or grid.
Grid import
Energy should flow from Grid toward the House.
Battery charging
Energy should flow into Battery.
Battery discharging
Energy should flow from Battery toward the House.
If these basic flows are correct, the foundation of Zeus is configured correctly.
Multiple Inverters
Zeus is designed for installations with more than one inverter.
When configuring multiple PV sources, make sure every physical production source is counted once and only once.
For example, if Home Assistant already provides a sensor representing the combined production of two inverters, do not also add both inverter production sensors to the same total.
Correct energy accounting is more important than having every available sensor mapped.
You’re Ready for the Next Step
Once Grid, Solar and Battery accurately represent your real system, Zeus has the foundation it needs for:
Energy Statistics · Finance · Battery Intelligence · Forecasting · Device Analytics · Smart Control
You can now continue with:
3) Connect Your Heat Pump
Start with accurate energy flows. Zeus builds its intelligence from there.