Solar is being added to the Romanian system faster than the network can absorb it. For an investor, the binding constraint is no longer the price of panels or the level of the CfD strike — it is whether a project can secure a grid connection at all. The grid is the real asset, and it is scarce.
The number that frames everything
As of March 2026, Romania had on the order of 1,431 renewable projects holding valid grid-connection agreements, totalling roughly 81 GW of capacity. To put that in proportion: the country installed about 1.7 GW of solar in 2024 and 2.2 GW in 2025. The connection queue is, in other words, more than an order of magnitude larger than the system's recent annual build rate — and far larger than the network can physically integrate this decade.
Why the queue is the problem
A connection queue of this size is not a sign of 81 GW of real projects. It is a sign of congestion: speculative and under-developed requests occupy capacity studies and transmission headroom, slowing — and raising the cost of — the genuine projects behind them. Recognising this, a new framework came into force in June 2025 requiring connection “solution studies” to be processed in chronological order, with only fully-documented projects allowed to hold a place in the queue. Clearing out the speculative requests could, on official estimates, release around 3.5 GW of capacity for real projects.
| Indicator (2026) | Figure |
|---|---|
| RES projects with valid connection agreements | ~1,431 / ~81 GW |
| Advanced projects expected online in 2026 | 107 / ~3.84 GW |
| Transelectrica approved transmission capacity, 2026–2035 | ~18.4 GW |
| Capacity potentially freed by queue clean-up | ~3.5 GW |
Why storage is the fast answer
Reinforcing a transmission network takes a decade and acts of public procurement. Storage takes months and acts of private capital. That asymmetry is the core of the investment case: a battery absorbs midday solar that the grid cannot otherwise take, and releases it into hours when the network has headroom and prices are higher. Storage does not replace grid investment — but it is the fastest available way to extract more usable energy from a constrained network, which is why Romania is subsidising it (a ~€150m Modernisation Fund battery scheme) in parallel with the connection reform.
In a grid-constrained market, the scarce asset is not a megawatt of panels — it is a secured connection point. A ready-to-build project with a clean, firm grid position is worth more than a larger project still stuck in the queue.
What this means
For an investor, the Romanian thesis inverts the usual order of diligence. Generation economics — capex, the CfD strike — are necessary but no longer sufficient. The first question is grid: is the connection agreement firm, fully-documented, and high in a queue now being administered chronologically? Projects that clear that test command a premium precisely because the constraint is real. Storage, and co-location of storage with constrained solar, is the most direct way to turn the bottleneck into yield rather than a stranded asset.
Sources: Transelectrica and ANRE grid-connection data (March 2026); Strategic Energy Europe and Balkan Green Energy News reporting on the connection queue; pv magazine, Romania grid-connection rule changes (June 2025) and 2024–2025 solar installation figures; Romanian Ministry of Energy, Modernisation Fund battery scheme.
This note is general market commentary, not investment advice. Capacity and queue figures are as reported by Romanian authorities and trade press and change over time; no project outcome is guaranteed. SolarPlants is the commercial brand of VERDEVOLT PROIECT S.R.L.