Ostrom Energy - Smart & Green

What the Ostrom Energy app is for

The Ostrom Energy - Smart & Green app is the account app for customers of the electricity supplier Ostrom. It is aimed at people who buy power from Ostrom on a monthly subscription, which the listing says can be cancelled at any time. The app is available in English and German.

Its main job is to show how much electricity you use compared with what you pay each month. It also reports CO₂ emissions saved, and it gives you a place to handle invoices, payments and your deposit.

Tracking electricity use and meter readings

You enter your own meter readings in the app, and the usage figures are only as current as the readings you add. The listing suggests adding them regularly.

With a smart meter, the app records consumption hour by hour rather than relying on manual readings. Usage is then shown next to your monthly payments, so you can see whether you are paying ahead or behind.

Smart meter and dynamic hourly tariff

Customers with a smart meter can be billed at the current hourly electricity rate instead of a fixed price. The app is where that hourly usage is followed.

The listing claims savings of up to 35% or up to 500 € a year on the energy bill. These are the developer's figures and have not been checked here.

Invoices, payments and monthly deposit

The app lists your invoices and payment history in one place. You can also change the payment method you use.

If your usage rises, you can change the monthly deposit within the app. The listing says this is meant to avoid a large additional charge at the end of the year.

Contacting Ostrom support through the app

Support runs through a chat inside the app, so questions about your account can be sent to Ostrom's team without leaving it. The chat is offered in English and German.