sonnenFlat is the ideal addition to your sonnenBatterie and solar system.

sonnenFlat will enable you to become independent from conventional retailers and take your energy future into your own hands.

What is sonnenFlat?

It is an energy tariff for sonnenBatterie owners. You receive a guaranteed annual allowance of energy for a low monthly fee and in return some of the energy stored in your sonnenBatterie will be used to assist in the stabilisation of the electricity grid resulting in reducing your energy bills.

How does sonnenFlat work?

  • The offer is open to customers who purchase and install the sonnenBatterie and who have an existing or new solar system.

  • Once you have purchased and installed your sonnenBatterie with one of our partners, you can sign up for one of three sonnenFlat packages outlined below.

  • Your solar and sonnenBatterie system will cover a large portion of your energy consumption but not all. Therefore under a conventional retail bill you will still have energy charges and fixed supply charges to pay.

  • sonnenFlat replaces both these charges with one low monthly fee, saving you money on electricity bills.

  • Each package requires a suitable capacity solar system installed on the roof of your home.

  • The solar system, the sonnenBatterie and sonnenFlat will combine to provide your energy needs to the consumption allowance.

  • If you exceed the allowance in a 12 month period you will be charged ONLY for the excess consumption taken by the grid at a low competitive per kWh energy rate.

white sonnenBatterie Father hugging two kids

What advantages do I receive with sonnenFlat?

  • An energy package to make the most of your solar system and sonnenBatterie
  • Energy cost savings above that provided by solar and storage system
  • A mechanism to control your energy cost against rising energy prices
  • sonnenFlat improves payback time of the sonnenBatterie

sonnenFlat Packages

There are three energy packages which you can choose from to suit your energy needs.

sonnenFlat AU price table


A sonnenFlat team member will be in touch within the week to confirm your eligibility.
Please save the email to ensure you don't miss our email potentially filtered to your junk box.
Have more questions? Please call us on 1300 867 856

* mandatory field

To view all relevant further information for sonnenFlat please click the below links:

Terms & Conditions

sonnenFlat Energy Price Fact Sheets