NEZE Sp. z o.o. executes power engineering projects throughout Poland. We design and construct power networks and grid connections – from initial concept through to final commissioning.
We specialize in connecting renewable energy sources, with a strong emphasis on photovoltaic (PV) farms. We construct substations and electrical networks for RES projects and other facilities requiring stable and secure power supply.
Combining our team’s experience with modern technical facilities and specialized testing and measurement equipment, we deliver projects efficiently and in strict adherence to the highest technical standards.
We provide end-to-end service – design, construction, and maintenance offering comprehensive support at every phase of investment.
We combine engineering expertise with hands-on implementation experience, enabling us to deliver projects efficiently and without unnecessary complications. We provide comprehensive support at every stage – from the initial concept and administrative procedures to the commissioning of the installation.

Experienced engineering staff
Comprehensive power engineering execution
RES & BESS Expertise
Technical & energy consulting
Timely delivery & high quality
Investment cost optimization

In-house service teams

Remote diagnostics & repairs
MV/LV Substations and Power Infrastructure
NEZE Sp. z o.o. delivers comprehensive projects for connecting generation sources and industrial facilities to the power grid. We design and build MV/LV substations and power infrastructure, including both new grid connections and the modernization of existing electrical networks.


Precise and Compliant
We specialize in the design of grid connections and power infrastructure for photovoltaic farms, biogas plants, wind farms, and cogeneration facilities (natural gas, biomass, landfill gas, and wastewater treatment plants). We deliver projects from the initial concept through detailed design documentation, in compliance with DSO requirements and applicable standards.
Reliable and proven in practice
We provide comprehensive construction services for grid connections for generation sources, MV/LV transformer substations, MV and LV power lines, electrical installations for industrial facilities, and telecontrol cabinets (R_GEN – generation switchboards), as well as network upgrades and utility conflict relocation. We also provide design supervision, technical acceptance support, and turnkey assistance throughout the commissioning and handover process. For General Contractors, we offer flexible cooperation tailored to the required scope of work for generation source and BESS grid connections.


Efficient from concept to commissioning
We manage the entire DSO grid connection process, from the initial concept to the commissioning of the installation. We coordinate every stage of the project – from obtaining Grid Connection Conditions (GCC), preparing and securing approval of the design documentation, commissioning activities (including telecontrol, protection systems, and testing), assisting with DSO agreements, reviewing electricity supplier contracts, through to the final documentation and energization. Acting under a Power of Attorney, we represent the investor throughout the entire grid connection procedure.
We ensure technically optimized solutions, full compliance with DSO requirements, and the efficient delivery of projects through to successful commissioning and final acceptance.
Safe and compliant with standards
We prepare transformer substations for safe and reliable operation by performing testing and measurements, verifying compliance with the design documentation, and providing support during the DSO acceptance process.
This is a critical stage that ensures the reliability, safety, and long-term performance of the installation.
In addition, we offer remote monitoring, remote control, diagnostics, and maintenance services through our MyEn platform. We also provide regular inspections and servicing of transformer substations, and in the event of a failure, our rapid-response service team helps minimize downtime in power generation or industrial operations.


Reliable and tailored to your project
We provide expert consulting on grid connections, power supply upgrades, and the optimization of technical solutions. By combining engineering expertise with practical implementation experience, we deliver solutions that are reliable, safe, and economically viable.
We work with General Contractors, investors, companies, and public institutions across Poland, providing comprehensive support at every stage of the investment process.