Efficient energy management leads to free mobility


Installation data  
Size of installation  
5 kWp 
Purpose, system type  
Roof-top installation 
Storage unit
1 Fronius Solar Battery 7.5 
1 Fronius Symo Hybrid 5.0-3-S 
Initial installation: July 2013
Upgrade with the Fronius Energy Package: January 2015 
Annual yield  
4,600 kWh 
Special feature  
Loxone Home Automation System.
One electric moped and one electric motorbike are powered with PV electricity 

More information

“Not having to pay a Cent when I go to the petrol station is certainly rather
handy,” says the 16 year old daughter of system owner Manfred Wittmann.
“Putting petrol into their mopeds takes up a large part of my friends‘ pocket
money. Not only can I fuel up for free, but my moped doesn‘t generate any harmful
emissions.” Anja uses the power generated by the roof-mounted PV system
to keep her electric moped fully charged.
“We have had a 5 kWp PV system since July 2013. Now we have added a storage
solution to make more efficient use of the PV electricity we generate. In
doing so we have increased our self-consumption rate from a yearly average of
30% to 70%. A good proportion of the energy generated is used to power our
electric bikes, which run almost exclusively on solar power.” explains Manfred
The energy management processes are controlled by a Loxone Miniserver. In
combination with the PV system, several consumers in the household are intelligently
managed and the level of self-consumption is maximised. During
summer the family can cover up to 90% of their electricity needs from their
own PV system.