What is a prosumer in Romania — rights, registration, and a worked example
By Fotovol·Updated 18 May 2026
What is a prosumer (legal definition)
A prosumer (Romanian: prosumator) is a customer who also produces energy for the grid — in your case, through rooftop photovoltaic panels. The status is defined by ANRE, the Romanian energy regulator, and applies to systems below 27 kWp for residential connections (up to 100 kWp with three-phase service and matching consumption).
Important: this isn't a commercial "energy seller" status. You stay on your existing supply contract; the meter simply counts in both directions and the bill includes a compensation mechanism for the kWh you push back to the grid.
How to register as a prosumer
Three actors are involved, in order:
| Actor | Role |
|---|---|
| Installer | Prepares the technical project, files the grid-connection application with the DSO |
| DSO (distribution operator) | Issues the technical connection approval (ATR), swaps your meter for a bidirectional one, signs the connection contract |
| Supplier | Adds the prosumer clause to your existing supply contract (Hidroelectrica, PPC, Premier Energy, ENGIE, Electrica Furnizare etc.) |
End-to-end timeline from project filing to first prosumer bill: 30–60 days. Steps are sequential — installer first, then DSO (~30 days for ATR + meter swap), then supplier (~7 days for the contract addendum).
For the concrete steps of the prosumer contract — supplier addendum and DSO connection contract — see the dedicated article. This page covers the big picture only.
In practice the installer handles all the paperwork as part of the project. Doing it yourself adds noticeable time.
How compensation works (net metering)
The current Romanian model is quantitative kWh-for-kWh offsetting over a settlement period:
- For residential systems under 27 kWp, the settlement period is 24 months (extended from 12 months in 2024).
- Excess production in any month rolls over to the next month automatically.
- You pay only the net difference — kWh consumed minus kWh injected, at your usual tariff.
What this is NOT: it's not a "sale at €0.10/kWh to the grid" and you don't get monthly cash payouts. There's no recurring cash flow from the supplier for the excess.
At the end of the settlement period, leftover surplus (if any) is monetised at the supplier's buy-back rate, which is usually lower than your consumption tariff. So: don't oversize the system expecting cash returns — well-sized residential systems target annual consumption, not large excess production.
To estimate the right capacity for your consumption, use the capacity calculator.
Casa Verde and what to verify
Any system funded through the Casa Verde subsidy is required to register as a prosumer — there's no AFM application without a commitment to bidirectional grid connection.
Regulations shift occasionally — the 2024 extension of the settlement period from 12 to 24 months is the latest example. Before signing the supplier addendum, check the current offer for:
- the buy-back rate for end-of-period surplus,
- whether any grid-injection fee applies,
- whether the settlement period has been updated again (check the ANRE schedule).
When ready, request a personalised quote — the installer handles the prosumer paperwork as part of the project.
How to buy panels as a prosumer
A common question: "do I need to be a prosumer before I buy panels?" Short answer: no. You buy the panels (or request a quote) first, then you become a prosumer because you installed the system. The process doesn't run in reverse — you can't register as a prosumer without a physical, technically verified installation.
Three steps in order:
- Pick panel type and capacity. See the solar panel brands guide for tiers (premium / mid / budget) and use the calculator for sizing against your consumption.
- Request a quote from an AFM-verified installer (request a quote or browse the installer directory). The quote covers both the equipment and the paperwork (connection request, DSO contract, supplier addendum).
- Prosumer status is activated automatically once the installer finishes filing — you don't request it separately. See prosumer contract for the steps the installer runs on your behalf.
Prosumer rights (what OUG 163 gives you)
As a prosumer, you're legally guaranteed:
- 1:1 kWh-for-kWh compensation over a 24-month settlement period — no less than that. If your supplier offers less, they're legally obliged to provide at least the OUG 163 minimum.
- Free bidirectional meter swap, borne by the distribution operator.
- Unjustified ATR refusal is illegal — if the DSO refuses your request without clear technical grounds, you can file a complaint with ANRE.
- Non-discriminatory grid access — the DSO can't charge extra fees for injection above the standard transport tariff.
- The right to keep your current tariff — becoming a prosumer doesn't kick you off a fixed-price contract if you have one.
- Final surplus payout at the supplier's buy-back price — even if lower than your supply tariff, it's a legal guarantee that surplus isn't lost.
Prosumer obligations
On the other side, the status comes with concrete obligations:
- Maintenance of the installation stays your responsibility. The DSO doesn't intervene on panels/inverter/batteries — only on the meter and service line.
- Liability insurance (recommended, not always mandatory) — damages caused to the grid or neighbours by a fault in your installation are your responsibility.
- Notifying the DSO of changes — if you swap the inverter, add panels, or add batteries, you must notify the DSO at least 30 days in advance.
- Paying the fixed bill components (subscription, transport, VAT on residual net consumption) — net-metering only covers active energy, not the fixed grid-usage costs.
- Document retention: ATR, connection contract, and supplier addendum — minimum 5 years; needed when selling the house or during an ANRE audit.
Realistic numeric example — one month in a prosumer's life
House with 5 kWp facing south-east, average consumption 400 kWh/month, supply tariff 1.20 RON/kWh, June (summer production):
| Indicator | kWh |
|---|---|
| Panel production | 700 |
| House consumption (in parallel with production) | 220 (direct self-consumption) |
| Surplus injected to grid | 480 |
| Consumption from grid (nights, cloudy days) | 180 |
Bill calculation:
- Energy consumed from grid: 180 kWh
- Energy injected into grid: 480 kWh (exceeds consumption → entire consumption is 1:1 compensated, 300 kWh surplus rolls over to next month)
- Active energy component on the bill: 0 RON (1:1 compensation covers all consumption from grid)
- Fixed component (subscription + transport + excise + VAT on residual consumption): roughly 35–50 RON/month, paid regardless of production.
In winter, the situation reverses — 600 kWh/month consumption, 200 kWh/month production. You use the surplus rolled over from summer to cover the difference. At the end of the 24-month settlement period, whatever remains (if anything) is monetised at the supplier's buy-back price (~0.30–0.50 RON/kWh).
What changes on your bill when you become a prosumer
Practically, your bill gains two new columns:
- "Active energy injected" — kWh you sent to the grid in that month.
- "Compensation balance" — surplus rolled over from previous months, in kWh.
The consumed-energy component shows up reduced by the injected value. Fixed components (subscription, transport, excise, VAT on residual value) stay — net-metering strictly covers active energy, not the grid-usage costs.
If you see on the bill that injection isn't compensated 1:1 (e.g., "injected: 480 kWh, compensation applied: 240 kWh"), it means the supplier is applying a model below the OUG 163 minimum — call them and request a written clarification. Your prosumer contract is at stake.
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