How long does it take to become a prosumer? Realistic timelines for 2026
The panels are on the roof, the inverter is humming and the installation company has packed up its tools. So when does the meter start counting in your favour? This is the moment most new prosumers discover that a photovoltaic system does not start paying for itself until the grid side of the project is complete: the connection dossier, the operator’s approval, the connection certificate and the bidirectional meter. That administrative phase has its own calendar — and it is the part almost everyone underestimates.
I am George Valentin, and at SUN WATT (ANRE attestation no. 19761) this grid side is exactly what we do in Bucharest, Ilfov and Giurgiu. We do not sell or install panels; we connect prosumers to the grid — dossier, approvals, certification and meter. The timelines below come from that experience, with one honest caveat up front: the operator’s deadlines follow the ANRE regulations in force, and nobody outside the operator can promise you a calendar date.
The short answer: weeks to a few months
In Romanian legislation, a prosumator (prosumer) is a consumer who also produces electricity — typically from photovoltaic panels — and feeds the surplus into the grid. For a typical residential system in the area served by Retele Electrice Romania S.A. (formerly E-Distributie Muntenia / Enel), the realistic end-to-end timeline in 2026, from a complete dossier to the first invoice that reflects compensation, is measured in weeks to a few months — not days, and rarely longer than a season when the file is handled correctly.
| Stage | Who drives it | Indicative duration |
|---|---|---|
| 1. Preparing the connection dossier | you / your certified company | a few days, if documents are complete |
| 2. Operator review and approval (ATR) | Retele Electrice Romania S.A. | weeks, per the ANRE regulations in force |
| 3. Connection certificate (certificat de racordare) | the operator | days to weeks after compliance is confirmed |
| 4. Bidirectional meter installation or reprogramming | the operator | days to weeks after certification |
| 5. First invoice with compensation | your electricity supplier | one of the following billing cycles |
All durations are indicative. They depend on the operator’s workload, the season and — more than anything else — on whether your dossier passes the first review without clarification requests.
Stage 1: the dossier — days, if your paperwork is in order
The prosumer dossier gathers your identity and property documents, the technical data of the photovoltaic system, the inverter’s conformity certificates and grid settings, the single-line diagram of the installation and the documents of the certified company that executed the electrical work. When every piece is available, an experienced team assembles and submits the file in a matter of days. According to the information published by Rețele Electrice România, the application can be submitted through an account on the operator’s online portal or at an electricity supplier’s shop — so a well-prepared file does not even need a trip to a counter.
When pieces are missing — an inverter datasheet in the wrong language, an expired land registry extract, a diagram that does not match what was actually installed — this “quick” stage quietly consumes weeks. It is also the only stage you fully control, which is why it deserves the most attention. At bransam.ro we prepare the complete connection dossier and design from 900 lei, and we check every document against the operator’s requirements before anything is submitted.
Stage 2: the operator’s review and the ATR — typically a matter of weeks
The ATR (aviz tehnic de racordare — the Technical Connection Approval) is the operator’s document that defines the technical conditions under which your connection point may exchange power with the grid. Two scenarios matter for your timeline:
- Your photovoltaic system fits within the power already approved for your connection. The review focuses on the system’s compliance, and the route to certification is the shorter one.
- Your system exceeds the approved power. The operator will require an updated approval — effectively a new ATR procedure — before anything else moves. This is the single most common structural delay we see.
The review deadlines are set by the ANRE regulations in force, and Rețele Electrice România also publishes its own terms for this stage: 10 working days for evaluating the application and documentation, then 30 calendar days for establishing the connection solution and issuing the ATR. These are the operator’s published terms, not guarantees — and note that the ATR itself reaches you only after the related invoice is paid. In practice this stage usually takes several weeks, and it is longer in spring and summer, when installation volumes peak and the operator’s queues grow. Our ATR assistance starts from 350 lei and exists mostly to make sure your file enters that queue once, not three times.
Stage 3: the connection certificate (certificat de racordare)
The certificat de racordare (connection certificate) is the document that officially records your consumption point as one that both consumes and produces energy. The operator issues it after confirming that the installed system matches the approved documentation. The operator’s published terms for this phase are short — 5 working days for the reception of the installation and 3 working days for issuing the connection certificate — but the clock starts only once compliance is confirmed. With a clean file, this step adds days to a few weeks; with discrepancies between paper and reality, it can send you back to stage 1.
Stage 4: the bidirectional meter
Once you are certified, the operator schedules the installation or reprogramming of a bidirectional (smart) meter, which measures energy in both directions — what you take from the grid and what you feed into it. The work itself takes under an hour; the scheduling depends on the operator’s field teams and typically lands within days to a few weeks of certification — the operator’s published term for energisation and meter installation is 5 working days. Until this meter is in place, your surplus production is not being credited, no matter how sunny the month was. One detail worth knowing once it is running: on the meter display, index 1.8.0 records the energy you consume from the grid, while index 2.8.0 records the energy you feed into it — the figure that matters for your compensation.
Stage 5: the first invoice with compensation
The final, often forgotten step happens at your electricity supplier, which updates your contract to the prosumer regime. The energy you export is then measured and offset according to the rules in force. Realistically, the first invoice that reflects compensation arrives in one of the billing cycles following the meter change — not the same month. If two or three cycles pass with no visible change, contact your supplier and verify that the certificate and metering data were transmitted.
What stretches the timeline
Three problems cause the vast majority of long prosumer files:
- An incomplete or inconsistent dossier. Every rejection or clarification request restarts the operator’s clock. One missing certificate can cost more time than the entire correct procedure.
- A non-compliant inverter. If the inverter lacks the required conformity documentation or is configured outside the operator’s grid requirements, certification stalls until it is re-documented or reconfigured.
- More installed power than approved. A system sized above the connection’s approved power triggers a new approval and sometimes a power increase on the connection itself (our assistance starts from 350 lei). Handled early, this adds weeks; discovered late, it can add months.
Add to these the seasonal congestion: files submitted at the peak of the photovoltaic season simply wait longer in the queue.
How we compress the part that can be compressed
Nobody shortens the operator’s legal deadlines — but the end-to-end timeline is mostly lost outside them. What we do at bransam.ro: we verify the dossier before submission so it passes the first review; we prepare documents in days, not weeks; we track the file and answer clarification requests immediately; and we coordinate the meter appointment as soon as the certificate is issued. For the complete picture of the procedure itself, see our step-by-step prosumer connection guide.
Because every photovoltaic project is different — power, connection type, existing ATR situation — we price full prosumer connection support through a personalised offer, after looking at your actual file.
The honest bottom line
If someone promises you a fixed date for becoming a prosumer, they are promising something they do not control. What can honestly be promised is a dossier that is right the first time — and that is where most of the wasted months hide. If your panels are installed (or about to be) in Bucharest, Ilfov or Giurgiu, call us at 0733 097 440 or write to us and we will tell you, based on your documents, what your realistic timeline looks like.