Your monthly deposit payment is an estimate of your electricity usage – designed to help you pay consistently and stress-free throughout the year.
You can easily calculate your monthly deposit on the tariff calculator here: https://join.ostrom.de/tariff-plan?&language=en When you type in your postal code, you can also see the base and unit price. :)
Here’s how we calculate it:
🔍 What factors go into the calculation?
We estimate your electricity consumption based on two key factors:
The number of people in your household/estimated yearly electricity consumption in kWh
Your address (including your grid area and local grid operator)
From this, we calculate a realistic consumption value, which we use to determine your monthly deposit payment.
🔁 What if my usage is different?
No worries: If you use more or less electricity than expected by the end of your billing period, the difference will be automatically settled in your annual invoice.
So you’ll never overpay – and if you’ve paid too much, you’ll get the difference back.
📲 Can I adjust my monthly payment?
Yes! If you feel your monthly installment doesn’t reflect your actual usage, you can update it anytime directly in the Ostrom app.
Alternatively, feel free to send us a message via chat or contact form.
📑 Still have questions?
You can find more details about monthly payments in our Terms and Conditions, section “5. Payment Terms.”