WALDEVAR Begins Romania Solar-Plus-Storage for SANY

• WALDEVAR Holding breaks ground on a co-located solar-plus-storage plant for SANY in Dobrești: 95 MWp PV with 220 MWh batteries, strengthening grid stability for Romania’s 2030 climate goals.

WALDEVAR Holding has begun building a co-located solar-plus-storage project for China’s SANY Group in Dobrești, Dolj County, Romania. The site will feature 95 MWp of photovoltaic generation paired with a 220 MWh battery energy storage system.

Under the EPC contract, WALDEVAR will handle design, procurement, construction, installation, testing and commissioning, including the high-voltage works to connect the plant to the grid. Grid facilities will include a 20/110-kV transformer substation and a 110-kV underground transmission line. The batteries are intended to shift daytime power to after sunset or before sunrise, improving grid stability and helping Romania integrate variable renewables, supporting national and European 2030 climate goals.

WALDEVAR’s 95 MWp solar-plus-storage EPC for SANY in Romania—how will it help grid stability?

• Co-located design enables “peak shaving” and smoother delivery: battery discharge can cap sudden PV output spikes and reduce rapid net-load swings that stress dispatch schedules.
  
• Time-shifting reduces evening ramping needs: by moving some solar generation to after sunset/before sunrise, the project can lessen the steep ramp that typically occurs when PV output drops.
• Faster frequency and reserve support potential: battery systems can respond in milliseconds, helping stabilize frequency and providing quicker balancing capability than conventional generation.
  
• Improved voltage management at the connection point: the added substation equipment and the ability to control inverter output can support local voltage profiles, reducing the risk of voltage excursions during high PV production.
• Curtailment reduction and better renewable utilization: if the grid would otherwise require PV curtailment at certain times, storage can absorb excess energy and make more of the available solar generation usable.
• Enhanced resilience to intermittency: co-located energy shifting and dispatchability help reduce reliance on forecasts and operating margins when weather-driven PV variability increases.
• Smoother system operator scheduling: paired generation that can be dispatched like a more controllable resource makes it easier for grid operators to plan day-ahead and intraday.
• Lower stress on transmission constraints: using underground transmission and coordinated grid works, the plant can help manage power flows during periods of high renewable penetration, improving overall system stability.
• Contribution to Romania’s integration of variable renewables: storage-backed PV supports higher shares of renewables by providing firming services—helping the grid maintain reliability as more solar and wind come online.
• EPC scope accelerates safe, reliable commissioning: delivering design through commissioning—including high-voltage works—supports proper grid-interface testing, which is critical for stable operation and protection coordination.
• Operational flexibility for SANY’s supply chain: besides grid services, the ability to shift and smooth power can improve electricity availability for industrial operations, indirectly supporting more predictable load patterns on the grid.