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Tariffs & Terms

All about our two electricity tariffs, prices, flexible contract period and more.

Sign Up & Switching

All about how to sign up , estimating your consumption and more.


If you moved recently, find most questions you may have here.


Not sure about your meter or Zählernummer? Read more here.

Green Energy

Curious about our sustainability credentials? See more here.


Want to know how our referral program works? See here.


If you have questions about payment methods and calculations, see here.


We’d be sad to see you go, but that’s part of our one flexible tariff promise.


Find anything about our amazing all-in-one Ostrom app here!

Data Privacy

See how Ostrom handles your data and how you can ask for data deletion requests.

Price Adjustment

See how our flexible and variable tariff works and how you are notified.

THG Quote

Own an electric car? You may get up to 345€ bonus annually with your THG Quote. Ostrom can help!

Electricity Price Brake

Find out anything about the Electricity Price Brake and how to get it.

Smart Meter

What is a smart meter? Does Ostrom offer smart meter? Find out more here.

Heat Pump & HVAC

Want to know more about electric heating and which tariff we offer? Read more here!

Smart Charging & EV

Find out how you can link your EV or charging station to the Ostrom app.


Explore all things solar within Ostrom app.


Find anything about our Ostrom Store.

Virtual Power Plant (VPP)

Learn everything about Ostrom's Virtual Power Plant (VPP), how it works, and much more!