LONGi, a global leader in solar technology and energy storage solutions, and Enexus, a premier Romanian developer and EPC contractor, have signed a landmark agreement for 50 MWh of liquid-cooled battery energy storage systems (BESS) in Titu, Dâmbovița county, Romania.
Building on more than 200 MW of LONGi solar PV modules deployed across Enexus projects since 2025, the agreement marks Enexus’s first deployment of LONGi’s advanced BESS technology. It represents one of LONGi’s largest BESS orders in Romania to date and one of its most significant deployments in Europe, further strengthening the companies’ relationship as they expand from a solar-module supply partnership into a broader utility-scale technology collaboration.
Romania is entering a decisive phase in its energy transition, with its updated National Energy and Climate Plan targeting approximately 5.8 GW of ground-mounted solar capacity and at least 2.5 GW of rooftop solar capacity by 2030. As renewable generation expands, utility-scale storage will be essential to manage solar variability, reduce curtailment, and maintain grid stability.
By combining PV generation with battery energy storage systems, projects can shift surplus daytime electricity to periods of higher demand, improve the predictability of renewable output, and provide fast-response balancing and ancillary grid services.
The hybrid infrastructure directly supports these needs by combining renewable generation with flexible storage capacity for a more reliable and grid-responsive Romanian power system.
The deployment comprises two distinct PV-plus-storage projects in Dâmbovița county, designed to support energy shifting, capacity firming, and broader grid-support functions:
Speaking on LONGi’s integrated solar-plus-storage vision, Dennis She, Vice President of LONGi and President of LONGi Energy Storage, emphasized: “The next phase of the global energy transition demands a total departure from fragmented, multi-vendor systems. Energy storage is no longer just an add-on; it is an essential stabilizer of the modern power network. Historically, developers were forced to piece together PV panels, batteries, and conversion units from disparate suppliers, creating integration bottlenecks and blurred accountability. By combining our generation technology with fully integrated BESS architectures, we offer one coordinated, grid-ready ecosystem. Our milestone project with Enexus in Titu demonstrates how turnkey solar-plus-storage solutions maximize plant economics, streamline execution, and deliver true grid resilience.”
The two Titu projects demonstrate the benefits of combining high-efficiency solar generation with utility-scale storage within an integrated equipment ecosystem. The 50 MWh deployment comprises 10 units of LONGi’s liquid-cooled utility-scale BESS solution, paired with integrated medium-voltage (MV) skid systems.
The PV-plus-storage systems are designed to support energy shifting, capacity firming, and other grid-support services while simplifying system integration and operations. Uniform cell-temperature liquid cooling is designed to help extend system operating life, while pre-assembled, factory-integrated MV skid containers can reduce balance-of-plant (BOP) costs, accelerate field commissioning, and support rapid response.
Detailing the strategic choice behind the technology selection, Mesut Güler, Founder and CEO of Enexus, stated: “Our partnership with LONGi reflects a strategic choice as much as a technical one. Integrated equipment means easier planning, faster delivery, and more predictable payment structures for our investors, while giving our clients access to Tier 1 PV technology. Integrating BESS in PV project design is a strategic direction we outlined since last year, and we are living up to this commitment – with LONGi entrusting us with one of its largest BESS projects in Romania so far. For us it is a clear signal of the trust and technical alignment behind this partnership.”
Reinforcing the regional significance of the transaction, Leon Zhang, President of LONGi Europe, added: “Enexus has been a key partner for LONGi in South-Eastern Europe, having successfully deployed 200 MW of our high-efficiency PV modules. Expanding our collaboration into utility-scale energy storage with this 50 MWh deal in Titu demonstrates the immense value of a unified hardware and software ecosystem. By pairing our PV modules with our energy storage solutions, we are delivering a turnkey, grid-ready solution that maximizes yield, support local grid stability, and accelerates Romania’s transition to a decarbonized power system.”
About LONGi
As a global leader in green energy technology, LONGi drives innovation across solar, energy storage, and hydrogen—three core pillars of a fully integrated clean energy system. LONGi delivers safe, affordable, and sustainable energy solutions to customers worldwide. Committed to sustainable development, LONGi works to make clean energy accessible and affordable for all. By seamlessly connecting green power generation, energy storage, and hydrogen production, LONGi enables end-to-end clean energy coverage—from generation and storage to consumption—building a truly inclusive and accessible clean energy ecosystem.
www.longi.com
About Enexus
Founded in 2014, Enexus is an international renewable energy company specialized in EPC services, asset management, and investment facilitation for solar and energy storage projects. Active across Romania, Türkiye, Italy, and Ukraine, the company supports the development of clean energy through local execution capabilities and long-term partnerships.
www.enexus.ro
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