The ERE scheme was formerly the HBE scheme. A subsidy under which electricity charged is converted into tradable certificates. Those certificates are bought by companies with a CO₂ obligation. These are, for example: fuel suppliers.
The abbreviation ERE stands for: Emission Reduction Units. The emission reduction units were formerly known under the HBE scheme (Renewable Fuel Units). The HBE scheme was mainly of interest for public charging stations with their own grid connection (EAN code). This was later extended to business grid connections. Now the scheme is also becoming accessible to consumers with home charge points. The charge points at people's homes do have to have a MID-certified meter. So if you have that, you can make use of the ERE scheme and earn money with your charging station.