Your energy, explained
Export Margin & Export Threshold
Two settings that control how your myenergi products use spare solar or wind power.
eddi and eddi+ support Export Margin and Export Threshold. For zappi and libbi, use Export Margin. The live threshold example below uses eddi.
It is the power left over after your home’s demand is met. Without another use, it flows out to the grid as export.
See how it works
Watch the surplus rise.
Move the slider or play the demo. See what eddi uses and what flows to the grid.
eddi is priority 2. Below 1.4 kW of usable surplus, eddi heats. Once 1.4 kW is available after the margin, zappi takes priority.
Export must exceed 200 W before eddi starts.
Illustration with a heating load available. With zappi added, the EV is connected and ready to charge on single-phase ECO+ at 100% Minimum Green Level. Start/stop delays and EV or heater power limits are omitted to show the priority change clearly. Changing settings in this example restarts the demonstration.
Export Margin
Keep a little power exporting.
Sets the amount of surplus power to leave flowing to the grid while your product runs. The rest is available to use.
The 100 W still goes to the grid. It is exported, rather than used by eddi.
Export Threshold
Wait for enough export to start.
Sets the export level that must be exceeded before diversion starts. Once running, your product uses the surplus available, less any Export Margin.
eddi waits until export exceeds 200 W. At 1,000 W available, it then uses the full 1,000 W.
Using both together?
With a 200 W threshold and a 100 W margin, eddi waits for export to exceed 200 W. Once running with 1,000 W available, it uses 900 W and leaves 100 W exporting.
These examples use eddi while it is able to heat. Actual consumption depends on the connected load, operating mode and product limits. Available settings vary by model and firmware.
zappi and libbi
Export Margin is the option to use.
zappi and libbi use Export Margin. They do not have a separate Export Threshold setting. The margin stays exporting while available surplus is used, subject to each product’s operating limits.
zappi
Keep the margin exporting while charging your car.
With 2,000 W of surplus available:
1,900 W available to chargeThe remaining surplus must also meet the EV’s minimum charging requirement, around 1.4 kW on single phase. With only 1,000 W surplus and a 100 W margin, 900 W remains. zappi waits, so all 1,000 W goes to the grid. Start and stop delays still apply.
libbi
Keep the margin exporting when taking surplus power to charge.
With 1,000 W of surplus available:
900 W available for chargingThis illustrates surplus power libbi would otherwise take from the system. Actual charging depends on the installation, battery charge level, charging limits and product priorities. If libbi cannot take the remaining power, more goes to the grid.
Set Export Margin on the master product. A 100 W margin means a system export target of 100 W, rather than 100 W for each product. Your priority settings decide how the remaining surplus is shared.
If you have a home battery
Let your battery respond first.
A battery might see your charger or diverter as another household load and discharge to supply it. An Export Margin helps your myenergi products wait for surplus instead.
Give stored energy the priority you want.
A small margin helps give your battery time to take surplus power before eddi or zappi uses what remains.
- Generation supplies your home.
- Your battery has the opportunity to charge.
- Remaining surplus becomes available to eddi or zappi, subject to their settings.
The best configuration depends on your battery and how it is connected. Export Threshold alone does not guarantee that the battery will never discharge.
Where should you start?
| Your system | Starting point |
|---|---|
| No home battery | Normally leave Export Margin and Export Threshold at 0 W, where available. Product operating limits still apply. |
| Third-party home battery | A small Export Margin, often 50–100 W, is a starting point. Some batteries need a higher value. Follow the guidance for your setup. |
| zappi with a battery | For surplus charging with an Export Margin, use ECO+ and set Minimum Green Level to 100%. |
| libbi | Check the dedicated libbi controls for whether stored energy is allowed to supply eddi or zappi. |
A few useful checks
Does 0 W mean my product always starts?
No. It removes the extra margin or threshold, but normal operating limits still apply. For example, zappi needs around 1.4 kW for single-phase charging at 100% Minimum Green Level. The 1,000 W examples above are for eddi.
Where do I change these settings?
Check Supply Grid in your product’s advanced or installer settings. Menu names and available settings vary by model and firmware. In a linked system, the Export Margin is set on the master product.
Will a margin stop every battery discharge?
It helps during surplus operation. Boosts and other charging modes might still draw power from your battery. Use the guidance for your battery type and check its own schedules and controls.
What does Response Delay do?
On supported products, it adds a wait after the Export Threshold is exceeded. This gives a battery time to respond before diversion starts. It is separate from Export Margin and Export Threshold.