Energy Storage

We offer a number of different energy storage solutions which allow you to use batteries to save excess renewable electricity, benefit from off-peak grid tariffs, and have power in the event of grid shutdown.

We work with manufacturers such as Sonnen, SMA, Fronius, SolaX, BPE, GoodWe and Huawei to help find an energy storage solution that suits your purpose.

Find more information in our products section


The headquarters of sonnen is in Wildpoldsried – a Bavarian village that is already running on 100% renewable and clean energy. Wildpoldsried is the development and production location of the sonnenBatterie – Germany’s Lithium-storage systems market-leader.

The sonnenBatterie hybrid provides maximum cost efficiency as the system also includes the inverter for a solar photovoltaic system. This eliminates the need for an external device to convert direct current (DC) from the roof into alternating current (AC). This significantly reduces the total cost of a photovoltaic system and the system also becomes more compact and efficient.


Storage capacity
2.5 kWh – 15 kWh (expandable in steps of 2.5 kWh post installation)

10,000 charge cycles

Complete storage system
Everything included, ready to connect

sonnenBatterie hybrid output
5.5 kW (up to 6.4 kWp PV-input)

Batteries are the basis of all energy storage systems

Over time, they will be charged and discharged many thousands of times. For that reason the sonnenBatterie is based on the most reliable and sustainable battery technology available and exclusively uses lithium iron phosphate batteries (LiFePO4). These batteries offer a greater longevity and higher safety than most other lithium-ion batteries that are commonly used in smartphones, laptops or electric cars.

Did you know: lithium iron phosphate is the only battery component that occurs naturally and does not contain any toxic heavy metals.

Badger Power Electronics – BPE

BPE’s energy storage solutions use lithium iron phosphate chemistry, and their Hybrid Inverters come as standard with a lot of features you would expect to see in more expensive products.

BPE Hybrid PV Inverter Diagram