Thinking about switching to Ostrom? 🎉 Welcome – we’re excited to have you on board!
How your switch is handled depends on when you signed up:
📅 Did you sign up before June 6, 2025?
Then the old switching procedure still applies:
Registration:
We’ll send your switch request to the grid operator and your current energy supplier. Sometimes you’ll get a reply within 30 minutes – but it can take up to 14 business days.Start of supply:
As soon as your cancellation period ends, the grid operator sends us your final meter reading – and Ostrom takes over your electricity supply.
⚡ Did you sign up after June 6, 2025?
Then you benefit from the new and fast 24-hour supplier switch:
Fast & digital:
Your current supplier and the grid operator are legally required to respond to our registration request within 24–48 hours.Earliest start: 24–48 hours after signup:
⚠️ Important: The start date of your supply must be in the future – and at the earliest 24–48 hours after you sign up. Retroactive registrations are no longer possible.Recommendation:
Please sign up at least 14 days before your preferred start date – that way, there's enough time for cancellations and a smooth handover.
🗓️ How it unfolds day by day (from 06.06.2025):
✏️ Day 1 – You sign up with Ostrom
✉️ Day 1–2 – Grid operator & current supplier respond (within 24–48 hours)
✅ Day 2–3 – You receive your contract confirmation by email
⚡ Day 3+ – Electricity supply starts on your chosen date
🔍 Side-by-side comparison:
| Switch before June 6, 2025 | Switch from June 6, 2025 (§20a EnWG) |
Registration Duration | 30 minutes – 14 business days | Max. 24–48 hours |
Retroactive Start | Possible, up to 6 weeks in some cases | ❌ Not possible |
Cancellation by Ostrom | ✅ Depending on contract details | ✅ Depending on contract details |
Start of Supply | After contract ends or retroactively | Min. 24–48h after signup, only future-dated after your current contract ends |
And don't worry, no matter how long this takes we'll make sure you have electricity throughout the whole process!
✅ How do I know the switch was successful? Once the grid operator confirms your registration, we’ll send you your contract confirmation by email – usually within 24–48 hours, as long as all your details are complete and correct.
You can track the current status of your order at any time in the Ostrom app.