Services

PV construction Expert

Ostenweg

Ostenweg specializes in offering ‘Light’ EPC (Engineering, Procurement, and Construction) services, particularly in Romania where we are authorized in Engineering Design up to 110kV.

However, our primary focus lies in serving as the Main Contractor for photovoltaic power plant construction projects. We meticulously plan, construct, and supervise each major project on a case-by-case basis, ensuring the highest level of attention and care until the successful completion of every project.

+1.70

GWp

+10

Countries

+12.5MT

Co2 savings from our Projects

180+

Workers

Construction Phase

Ostenweg

This is mainly separated into 4 different stages: Civil works, Mechanical and Electrical Installation and Testing/ commissioning.



Civil Works

Our expertise encompasses road construction, foundations, trenching works and fencing, besides others. Our dedicated team for fence construction brings together a wealth of experience and technical know-how to ensure the highest quality in every project we undertake.



Mechanical Installation

Utilizing our state-of-the-art and our 5 ramming machines equipped with GPS technology and manned by certified drivers, we guarantee precision in piling works. From fixed tilt to tracker installations, our staff handles structure assembly and module installation with proficiency.



Electrical Installation

Our Electrical Engineers and certified electricians manage all aspects of AC/ DC cabling, earthing systems, inverter and transformer station installations, DC CBs or string inverter systems, and Scada/Monitoring installations.



Testing and Commissioning

We conduct product-specific testing and commissioning in accordance with industry standards and manufacturers’ specifications.



Desing and Engineering

Our company is authorized across Europe—through our qualified engineers and ISO-certified quality processes—to design and engineer PV plants up to 110 kV. We manage the full engineering scope from grid interface and HV/MV system design to protection studies, substation integration, and permitting support, ensuring bankable, grid-compliant solutions.



Construction of Substations

Our company delivers complete construction of substations up to 110 kV through experienced site teams and robust, ISO-aligned execution standards. We cover civil works, installation and cabling, primary and secondary equipment assembly, protection and control implementation, testing and commissioning support, and final handover to ensure safe, grid-compliant energization.

Floating System PV projects

Our specialized team ensures timely mechanical and electrical installations, including testing and delivering a fully operational system to our clients. This comprehensive approach ensures the exceptional quality and durability of our constructions.

Ensuring Safety and Excellence

Ostenweg

At Ostenweg, safety is our top priority. We take pride in our self-reliance, utilizing our in-house personnel, machinery, and a comprehensive inventory of electrical tools for communication, splicing, LV and MV works, including testing and commissioning equipment, to build every aspect of our projects.

This ensures not only the highest quality standards but also enables us to guarantee ON-TIME handover of the plant. Committed to HSE compliance as a core company policy, we rigorously adhere to the highest safety, health, and environmental standards, ensuring the well-being of our team and the communities we serve.