Clean and affordable energy for everyone is the biggest challenge of our time. If we succeed to free our energy production from carbon-based emissions within the next ten years we will not only protect our environment but also our economical and political freedom.

sonnen’s global vision of clean energy for all: presenting the sonnenBatterie and the sonnenCommunity.

During the day the sonnenBatterie optimizes the use of self-generated solar power, saving money on household electric bills.

The sonnenBatterie easily integrates with new and existing solar systems to manage power for households, both day and night.

The sonnenBatterie reliably supplies energy during the night time using the stored solar power generated during the day.

In the inter-connected sonnenCommunity in Germany, all members share their self-generated and stored energy with one other in a clean energy marketplace.

Integrating the sonnenBatterie provides true energy autonomy by enabling homes to generate and store their own energy, even during power outages.

sonnenBatterie manages energy usage, increasing household energy efficiency and reducing energy costs throughout the day.

sonnenBatterie eco - a declaration of independence for your home

The sonnenBatterie eco is an energy storage solution that utilizes intelligent energy management software. It is easily adaptable to your individual needs. The system is available in a variety of storage capacities and configurations, allowing for extensibility and expansion. sonnenBatterie eco allows you to save money every single day by harvesting energy from your solar PV system or the grid when it is cheapest, and using the stored energy from the battery to power your home when rates are more expensive.

sonnenBatterie white living room

Use solar energy throughout the day and at night

sonnenBatterie eco lets you enjoy the benefits of solar energy production 24-hours a day! Our integrated smart electronics manage energy use throughout the day, detecting when there's excess power and storing it for use at night.

Never Worry About the Lights Going Out

sonnenBatterie eco is specifically designed to provide you and your family peace of mind in the event of a power outage. Our unique power detection system will sense outages in real-time and automatically switch over to battery power!

Harvest Cheaper Energy to Use Later

sonnenBatterie eco allows you to engage in “rate arbitrage” – storing energy when it is cheap and running your home off the battery when rates go up. The sonnenBatterie eco is the right choice for every home and every budget.

Tech specs sonnenBatterie eco

sonnenBatterie white front

Power Unit

Continuous output: 
(AC) 3,000 W – 8,000 W 
Usable capacity:
5 kWh - 15 kWh (in 2.5 kWh steps) 
Dimensions (in) W/H/D 5 - 10 kWh:
Dimensions (in) W/H/D 10 - 15 kWh: 
Backup power capability

Listed and recognized components

Certified to UL 9540, UL 1741 (inverter), UL 1973 (batteries), and FCC part 15 Class B compliant.


Maximum effciency of inverter: 93 % 
Ambient temperatures: 41 – 113° F
Enclosure Rating: NEMA 12
AC Specifications 240 VAC / split phase / 60 Hz

Lifespan / Warranty*

Guaranteed standard lifetime of 10,000 cycles or 10 years. 
*Please observe our applicable warranty conditions

How the sonnenBatterie eco gets you through the day

illustration curve eco

Morning: minimal energy production, high energy needs.

At sunrise the solar panels start to produce energy, though not enough to cover the morning energy needs. The sonnenBatterie will bridge the gap with the stored energy from the previous day.

Midday: highest energy production, low energy needs.

In the daytime the energy generated from the solar panels is at its peak. But since nobody is home the energy consumption is very low so that most of the generated energy is stored in the sonnenBatterie.

Evening: low energy production, high energy needs.

The highest daily energy consumption is in the evening when the solar panels produce little or no energy. The sonnenBatterie will cover the energy need with the energy produced in the daytime.


As a young and upcoming company, sonnen GmbH has been honored for its innovative products and fast growth for several times. This proves that our vision of a future characterized by clean and decentralized energy supply is the right way to go.

APRIL 2018


sonnen was honored with the Innovation Award IT 2018 in the category "Green IT". The jury of experts rated the sonnenCommunity as a particularly innovative IT solution with great benefits.

Reddot award 2018 "Product Design" - sonnen
APRIL 2018

Red Dot Award “Product Design 2018”

The sonnenBatterie was awarded the Red Dot Award 2018 for its combination of forward-looking technology and challenging design. The award has been awarded since 1955 for exceptional design.

Award EUPD Research Top Brand PV 2018
MARCH 2018

EuPD Research „Top Brand PV Storage“ in Europe

For the second year in a row, installers throughout Europe gave the sonnenBatterie top marks, making them the "Top Brand PV Storage".

Global Cleantech award 2018 top 100

Global Cleantech 100 List 2018

sonnen is one of the 100 most innovative cleantech companies in the world. For the fourth time in a row sonnen is on the Global Cleantech 100 list. In 2018, around 12,300 companies were available for selection.

Top Power Storage 2017 - sonnen

Top Power Storage 2017

The Manager Magazin and the German CleanTech Institute have chosen the sonnenBatterie from among 300 models as the "Top Power Storage 2017".

award Zayed Future Energy Prize - sonnen 2017
APRIL 2017

Zayed Future Energy Prize

sonnen has been chosen among Europe's 1000 fastet growing companies by the Financial Times and statista. They identified tens of thousands of companies in Europe as potential candidates for the ranking.

EuPD Research „Top Brand PV Speicher“ in Europe
MARCH 2017

WirtschaftsWoche Top Energy Storage 2017

sonnen was the first storage manufacturer in the European market to receive the seal "Top Brand PV Speicher".

Award 50 smartest companies - fast company

50 Smartest Companies 2017

Fast Company has voted sonnen among the top 10 of the world's most innovative companies in the energy sector.

Global Cleantech 100 "Continued Excellence Award" - sonnen

Global Cleantech 100 "Continued Excellence Award"

sonnen GmbH is the winner of the Global Cleantech 100 award for "Continued Excellence" for the third year in a row as a leading innovator in the cleantech industry.

Zayed Future Energy Prize sonnen 2017

Zayed Future Energy Prize

sonnen won the Zayed Future Energy Prize, one of the highest remunerated prizes for special innovations in the energy sector, at the opening of the World Future Energy Summit in Abu Dhabi. sonnen is the first energy storage company to receive the prize in the “Small and Medium Enterprise” category.

sonnen award top 5 - National German Sustainibility Award

National German Sustainability Award

sonnen is one of the Top 5 small and medium sized companies of The National German Sustainability Award that is under the patronage of chancellor Angela Merkel.

sonnen Award Focus Growth Champion 2016

Focus Growth Champion 2016

The magazine Focus chose sonnen for second time in a row among the fastest growing companies in Germany. In its category “Electronics”, sonnen is one of the Top 5 companies.


The battery – durable, robust and safe

The sonnenBatterie residential and commercial storage systems only use lithium-iron phosphate (LiFePO4) battery technology, one of the most reliable, safe and long-lasting lithium battery technologies currently available. LiFePO4 is one of the most popular technologies for stationary storage systems due to its uniquely high chemical stability and resulting extremely high application reliability, durability and long life. Our battery systems are guaranteed to last for 10,000 cycles or 10 years. All sonnenBatterie components and systems are also UL Listed ensuring safety and performance for your home or business.


All included: high-end components perfectly tuned to your needs.

The sonnenBatterie is a complete system - ready for connection. This means that inside of every sonnenBatterie you'll find not only the extremely durable battery modules but also an inverter, an intelligent energy manager, measurement technology and the software to operate it all smoothly. All in one handy box. In contrast to most other battery systems in the market the sonnenBatterie components are build into a single high-quality casing and perfectly attuned to each other - thereby ensuring maximum longevity and the highest quality in a minimum of space.

Questions about buying

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