To use the SMA Energy Maximizer, an SMA device running on the ennexOS platform must be the 'system manager'. Currently (July 2026), this is actually always the single-phase hybrid Sunny Boy Smart Energy inverter. Often this is still configured as a 'subordinate device' instead of as a 'system manager'. In that case, the configuration must be switched. See also this article for more information.

How can you see which device is the 'system manager' in the installation?

This can be done by clicking on Configuration —> Device Management in Sunny Portal. There you will see a tree structure of the installation, with the system manager at the top. Below are two examples: in the top one, the Home Manager is the 'system manager'; in the bottom one, the Sunny Boy Smart Energy is the system manager.

To change the role of the SBSE from 'subordinate' to System Manager, several things need to be converted. Please contact the service department for this.

Note: The condition is that no other devices are controlled by the Home Manager, so no charging station or heat pump boiler. In addition, one or more battery modules must be connected to the SBSE.

Using the Energy Maximizer only makes sense if you have a dynamic energy contract. It is important that you enter the details of your energy tariffs on Sunny Portal. You do this by going to Configuration —> Tariffs.

Here you must enter two tariffs; the consumption tariff (also known as 'electricity tariff'), and the feed-in tariff (or: 'feed-in compensation'). Give them a name and select 'dynamic' for each tariff. Start with the 'electricity tariff'. You will immediately see today's exchange price (in quarter-hour values).

Scroll further down to the heading 'Surcharge'. Here you can indicate how much the energy supplier charges on top of the basic electricity price (usually around 12 to 13 cents per kWh, so €0.12 - €0.13). Click Save.

Now also do the above for the 'feed-in compensation'. Here you do not enter the surcharge, but the discount, in case your energy supplier charges you a discount for the feed-in. (Note: as long as the net metering scheme applies (until 1-1-2027), there is actually no discount)

For the Energy Maximizer, it is necessary to take out an SMA Premium subscription. This costs €6.95 per month. You can take a free trial subscription of 90 days to see if it's right for you. The subscription can be cancelled at any time.

Contact our service department to start the free trial period.

Under [Configuration] > [Digital products] you will find your SMA Premium subscription. After the trial phase (90 days), SMA Premium and the associated contract terms will remain in effect if you do not cancel SMA Premium before the end of the trial phase. Cancellation is possible at any time by clicking on 'Manage subscription'.

Once everything is set up, the Energy Maximizer will automatically take over the control of your system. You can follow the charging and discharging of the battery based on the electricity price on the 'Monitoring' —> 'Consumer balance' page. Tip: check the Electricity price option under 'Display options', then you will see everything on 1 page.