For systems with an installed capacity of up to 10,8 kWp and a maximum generation capacity of up to 10 kW, applications are submitted online through the HEDNO platform: https://deddie.gr/el/themata-stathmon-ape-sithia/ilektroniki-platforma-ypovolis-aitiseon- ape-sithya/fv-stathmo-10-8kw-10kw-netmet/
For larger systems, applications are submitted through a different platform:
https://ape.deddie.gr/apewebportal-ws/
As the two platforms may be consolidated soon, check the HEDNO website for relevant guidance.