🔌 What is an EVU disconnection for heat pumps?
If you’re using a heat pump electricity tariff, your heat pump may occasionally be automatically switched off for short periods. This is called an EVU block.
EVU stands for energy supply company (Energieversorgungsunternehmen in German).
❓ Why do EVU blocks happen?
EVU blocks help relieve pressure on the power grid during peak times.
During these periods, your grid operator can temporarily disconnect the heat pump from the grid.
How often and when this happens depends on your specific grid operator and may vary by region.
⚖️ What are the legal regulations?
To protect consumers, there are clear legal limits in place:
Maximum of 6 hours of disconnection per day
Individual blocking periods are limited to a maximum of 2 hours
Up to 3 EVU blocking periods per day, typically spread across morning, midday, and evening
These periods correspond to the usual peak demand times in the power grid.
The EVU block is not harmful to the heat pump and the rest of the heating system.
✅ Does Ostrom currently apply EVU disconnections?
No. Currently, no EVU blocking is carried out for Ostrom contracts.