Home | Ostrom Help Center

Tariffs & Terms

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

Sign Up & Switching

Here’s where you’ll learn how to sign up, estimate your usage, and what to keep in mind for the 24h supplier switch starting June 6, 2025.

Registration Issues & How to Resolve Them

If your registration wasn’t successful, don’t worry! Here, you'll find answers to common questions and guidance on how to resolve any issues with your registration. Follow these steps to ensure your details are accurate and get your service up and running smoothly.

Moving

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

Meter

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

Green Energy

Curious about our sustainability credentials? See more here.

Referrals

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

Payments

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

Cancellation

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

App

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

Smart Integrations

Smart EV Charging, Smart Heating, Solar & Battery Storage

Virtual Power Plant (VPP)

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

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.

Smart Meter

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

Store

Find anything about our Ostrom Store.

Ostrom x Partner

Here you’ll find all the information about our partnerships (such as with E3/DC) and how you can benefit from them.