Solar PLUS Storage is the key to your energy independence!

sonnenBatterie – the world’s most installed smart energy storage system – perfectly integrates with solar systems to help homeowners:

  • Store your excess solar energy for use day and night
  • Save money on your electricity bills
  • Manage your energy usage throughout the day
  • Keep the lights on during power outages
  • Reduce your impact on the environment

Clean and affordable energy for all!

sonnenBatterie is sold exclusively through our network of trusted partners in the United Kingdom and around the world. With the sonnenBatterie you will join a global and rapidly growing community of people that share a common vision: using clean, reliable and affordable energy to take control of their own energy future.

It’s time to declare yourenergy independence!


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 10 years we will not only protect our environment but also our economical and political freedom. Digital technology empowers us to interconnect thousands of people, who are already producing clean energy, to share their excess energy – directly on a non-profit basis – with others in their community. Our intelligent sonnenBatterie can optimise the energy supply and demand to such a degree that an integration of 100% renewable energy within a community is possible – 24/7.

How the sonnenBatterie works.

The sonnenBatterie stores any excess electricity generated by your photovoltaic system that is not currently needed in your house. The stored solar energy is then available to you in the evening or at night. However, the sonnenBatterie can do so much more. As an intelligent storage system, it optimises your own consumption according to your household consumption and the current weather data. In this way, it automatically ensures that as much solar power as possible remains in your home.


Minimal energy production, high energy need. At sunrise the solar panels start to produce energy, though not enough to cover the morning energy need. The sonnenBatterie will bridge the gap with the stored energy from the day before.


Highest energy production, low energy need. In the daytime the solar panels‘ energy generation 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.


Low energy production, high energy need. 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.

Technology from the market leader for intelligent energy storage

The sonnenBatterie comes with the experience of 40,000 installed systems – built into each unit, the newest technology for highest independence and maximum longevity. All in a compact case that offers the highest flexibility thanks to its modular design.

What is the sonnenCommunity?

The sonnenCommunity is a community of sonnenBatterie owners who are committed to a cleaner and fairer energy future. In Germany, Austria, Switzerland and Italy it is already possible to become a member of the sonnenCommunity. As a member you can share your self-produced energy with other members of the sonnenCommunity. Since you are exclusively using energy from the community, there is no need for a conventional energy provider anymore.

Be independent together:the sonnenCommunity

The sonnenCommunity is your ticket to a new, clean and affordable energy future. With a sonnenBatterie and sonnenCommunity membership, you become 100% independent of your previous energy provider.

With a sonnenBatterie and a photovoltaic system you’ll completely cover your own energy needs on sunny days – often even generating a surplus. This surplus is not fed into the conventional power grid, but into a virtual energy pool that serves other members in times when they can not produce enough energy due to bad weather.

A central software links up and monitors all sonnenCommunity members – while balancing energy supply and demand. As a sonnenCommunity member you don’t need your conventional energy provider anymore – you are independent. From now on you supply yourself with renewable energy that is generated decentralized: you are part of the energy future!

Community Power

With Community Power, you have access to our low-priced electricity tariff. You may also share your home produced surplus energy with other members of the sonnenCommunity. For every kilowatt hour that you share you’ll receive a financial compensation that is well above the level of compensation offered by your electricity providers. And if you receive Community Power, you will pay a lot less than the so-called market price.

One of those electricity tariffs is the sonnenFlat.

The sonnenFlat: say goodbye to electricity costs*.

Forget about electricity price hikes – with the sonnenFlat you can stop paying for the power you use. Your electricity bill will soon amount to 0 € per year (within the limits of your individual sonnenFlat-rate*).

This is how it works

The sonnenFlat-Box connects thousands of sonnenBatterie users and combines many individual home storages into a giant pool of batteries. This “virtual storage” is large enough to buffer vast amounts of energy thereby helping to stabilize the public power grid.

For example, when there is a storm that suddenly results in an abundance of wind generated electricity the balance between supply and demand is lost. This causes an overload on the public power grid. A virtual storage consisting of thousands of sonnenBatteries can store huge amounts of excess energy for later use within a matter of seconds. This takes the strain off the public power grid and keeps its operation stable.

Members of the sonnenCommunity can now use their sonnenBatterie to become part of such a battery pool by providing a small share of their individual storage for the public power grid. As a financial compensation, they can get the sonnenFlat for 0 € energy cost (within the limits of the sonnenFlat-rate*).

You will not even notice that you are sharing your energy storage with the sonnenCommunity because your sonnenBatterie will only be used a couple of minutes each week to buffer short-term peaks in the power grid. With the sonnenFlat, storing electricity becomes even more economical for the individual. A household will save 100% of its energy costs. At the same time, the general public also profits from this technology because it negates the need to expand the public power grid. When you register for the sonnenFlat you will receive the sonnenFlat-Box via your postal service. Just plug the box into any socket in your home and you‘re done! It‘s really that simple to start your energy future.

* As a sonnenCommunity member with the sonnenFlat. Please note that the membership for sonnenCommunity and sonnenFlat is currently limited to a few countries. Depending on the sonnenFlat rate clients will receive cost-free energy up to 4,250 kWh with “sonnenFlat 4250”, up to 5,500 kWh with “sonnenFlat 5500” and up to 6,750 kWh with “sonnenFlat 6750”.

sonnenBatterieECO 9

  • Complete all-in-one storage system
  • Flexible capacity 2.5 – 15 kWh
  • AC Coupled NEW eco 9.43
  • Hybrid DC Coupled NEW eco 9.53
  • Output 1.1 – 3.3kW
  • 10 years & 10,000 charge cycles
  • 20 years’ battery service life
  • Virtual power plant & grid trading ready
  • DSM demand-side management smart home functionality
  • Safe durable lithium iron phosphate technology
  • Optimised self-consumption forecasting & predictive charging technology
  • Additional Features include WIFI remote control sockets, online portal, off-peak grid charging functionality, back-up option