A new category of solar energy systems has officially entered Greece’s regulatory framework, following a recent ministerial decision by the Ministry of Environment and Energy (YPEH) currently under public consultation. These are so-called micro-solar systems, with a maximum capacity of 900 watts, designed to plug directly into a standard household socket—helping users reduce their electricity bills.
Where Can They Be Installed?
While commonly referred to as ‘balcony solar panels’, these systems can be installed not only on balconies but also in any outdoor or semi-outdoor space that receives sufficient sunlight during daylight hours—such as rooftops, terraces, or façades.
The Registration Process
Under the new framework, a dedicated Digital Gateway hosted by the Hellenic Electricity Distribution Network Operator (DEDDHE) is expected to launch shortly, allowing interested users to register their systems.
The process involves two main steps:
1. Before Installation
When purchasing the system—either from a physical or online retailer—the user must provide the supplier or installer with the details of the electricity supply point where the system will be connected. The supplier or installer is then required to immediately notify DEDDHE.
In addition, the user must notify DEDDHE via the Digital Gateway up to five days before installation. Access is granted using TAXISnet credentials (the Greek government’s digital identification platform), and users must complete all required fields with their personal and technical information.
2. Technical Requirements for Installation
To install and connect such a system, users must meet the following conditions:
- Submit a new Declaration of Responsibility by the installer—which must be renewed every two years;
- Install a directional sensor to prevent any reverse flow of electricity into the grid;
- Equip the system with telemetry hardware to record both energy production and household consumption data, enabling accurate net metering.
No Connection Agreement or Fees Required
Unlike larger-scale solar installations, balcony micro-systems do not require a formal connection agreement with DEDDHE, nor any additional permits or approvals—and there is no connection fee to pay.
Power Limits and Compliance
The total installed capacity per supply point is capped at 900 watts, while the maximum power allowed for simultaneous operation (i.e., real-time output) is limited to 800 watts.
DEDDHE, in cooperation with the Hellenic Organization for Standardization (ELOT), will publish supplementary technical specifications on its website covering installation, grid connection, and operational requirements.
Upon receiving notification from the user, DEDDHE will promptly inform the relevant electricity suppliers linked to that supply point. It will also carry out random inspections—in coordination with those suppliers—to verify compliance with the framework’s technical and procedural conditions.