2024-09
Official Gazette on self-consumption and net billing
The core PV and storage framework is in force.
Greek rules for balcony solar
Here you can see what is already official, what still needs confirmation, and what we review before a balcony installation moves ahead.
Rules status
General net billingOfficial Gazette
800 W balcony PVDraft in consultation
HEDNO flowDigital Gateway pending
A concrete draft ministerial decision is now in public consultation until 20 July 2026. Before the order moves ahead, we confirm which process applies to your case.
What changed, when, and what still needs a check
The chronology keeps the official rule, landlord or building approval, and the still-open items separate.
Allowed now
Standard self-consumption flow
HEDNO/DEDDIE handles the ordinary process under the official framework.
Ask for written approval
Rental units or shared surfaces
If you change a railing, facade, drilling point, or common area, you need permission before ordering.
Draft in consultation
The plug-in 800 W flow
The ministry has published a concrete draft (open until 20 July 2026). It is a real step, but until it is published in the Gazette we treat it as a draft and confirm the flow before equipment is bought.
2026-04
Public discussion of a simpler 800 W plug-in path
The notification idea is public, but we do not treat it as final without the written text.
2026-07
Draft ministerial decision in public consultation
The ministry published a concrete text for systems up to 800 W and standalone batteries, with notification to HEDNO via a Digital Gateway. The consultation is open until 20 July 2026.
Today
Final check before ordering
We wait for the Gazette publication and confirm the balcony, the owner, and the official procedure all line up before locking the package.
Short answer
As of 14 July 2026, Greece has an official framework for self-consumption and net billing, and for plug-in systems up to 800 W the ministry has now published a concrete draft ministerial decision in public consultation (open until 20 July 2026). It is a real step forward, but until the final text is published in the Gazette we confirm the procedure before equipment is ordered.
| Status | What it means | Source |
|---|---|---|
| Confirmed | An official decision exists for self-consumption, synchronized offsetting, collective self-consumption, and storage. | Ministry Gazette B 5074/2024 |
| Confirmed | HEDNO/DEDDIE is the electronic-application and grid-connection body for PV systems on the distribution network. | HEDNO PV FAQ |
| In consultation | The ministry published a draft ministerial decision for systems up to 800 W (injection power) and total installed capacity up to 900 W, with pure self-consumption, notification to HEDNO via a Digital Gateway, no connection agreement and no connection fee. Consultation is open until 20 July 2026. | Ministry - draft decision / public consultation |
| Watch points in the draft | The text requires an installer's Declaration of Responsibility renewed every two years (a licensed electrician), a directional sensor to block reverse flow, and telemetry / a smart meter. We track whether these change in the final version. | Plug-in systems up to 800 W |
| What we review in practice | We check the railing, shade, wiring, building rules, and any local restrictions before recommending a final setup. | Practical check |
Site review
Balcony photo, orientation, shade, mounting points, and cable route.
Process review
We confirm HEDNO requirements, the current legal framework, and any building-level approvals if they apply.
Final quote
We send the final setup once the review is complete and the next steps are clear.
Before the final quote
We review the balcony, any owner or building requirements, and the right process so the proposed setup is workable from the start.
Sources
Below are the main official sources and public references we monitor for these installations.
Official Gazette
Greek Ministry of Environment and Energy - Government Gazette B 5074/05.09.2024 on net billing
Official decision covering self-consumption, net-billing style synchronized offsetting, collective self-consumption, and storage.
https://ypen.gov.gr/wp-content/uploads/2024/09/FEK-5074B_05_09_2024-net-billing.pdf
Grid operator
HEDNO/DEDDIE - Photovoltaic connection process
Official FAQ covering eligible users, installation locations, electronic applications, connection steps, and connection charges.
https://www.deddie.gr/el/support/fotovoltaika/
Grid operator
HEDNO/DEDDIE - Self-producer energy offsetting FAQ
Definitions and technical limits for self-producers using energy offsetting.
https://www.deddie.gr/el/support/sychnes-erotiseis-apantiseis-gia-tin-efarmogi-energeiakou-sympsifismou-apo-aftoparagogous/
Public consultation
OpenGov Ministry consultation - Article 70 on common areas
Public consultation text on PV and storage in common building areas with a 51% decision threshold for up to 40% of the area.
https://www.opengov.gr/minenv/?p=13522
Official ministry announcement
Ministry of Environment and Energy - "For the first time, balcony solar and standalone batteries"
Announcement of the draft ministerial decision in public consultation: systems up to 800 W, standalone batteries, notification to HEDNO, and an Electronic Self-Consumption Registry. Consultation open until 20 July 2026.
https://ypen.gov.gr/gia-proti-fora-dynatotita-gia-fotovoltaika-sto-balkoni-kai-aftonomes-bataries-se-noikokyria-kai-epicheiriseis/
Press context
To Vima / OT - 800 W and simple HEDNO notification reporting
Professional press coverage of the ministerial statement on 800 W, simple digital notification, and the pending implementing decision. Used as context, not as final legal text.
https://www.tovima.gr/2026/04/28/finance/fotovoltaika-sto-mpalkoni-energeia-gia-olous-me-ena-klik/