IN Brief:
- El Professional’s PLN111m net contract covers a further approximately 55MW of photovoltaic capacity at Mysłowice-Dziećkowice.
- The electrical scope includes medium-voltage cables, power equipment and expansion of a 110/20kV grid substation.
- The second phase is scheduled for completion in the second quarter of 2028, increasing the complex to approximately 92MW.
Tauron has appointed Polish contractor El Professional to deliver the next construction phase at its Mysłowice-Dziećkowice photovoltaic development, adding approximately 55MW of capacity to a reclaimed industrial site in Silesia. The PLN111 million net contract covers solar panel mounting structures, electrical installation, medium-voltage cable connections and expansion of a 110/20kV substation. Work is planned to finish in the second quarter of 2028.
El Professional confirmed that Tauron Zielona Energia signed the PLN111 million net contract on 30 October 2026; the appointment received further Polish trade coverage on 10 November. The current package follows a first phase of approximately 37MW, commissioned in 2023. Tauron expects the additional 55MW to bring the combined installation to approximately 92MW, subject to completion of the second construction phase.
The farm occupies a reclaimed combustion-residue storage area associated with the Jaworzno III power station, close to Mysłowice-Dziećkowice. Existing industrial land and a nearby high-voltage connection are advantages for a generation project of this scale, although foundations, cable routes and site access must still be designed for the actual ground conditions. No new remediation specification or foundation design was disclosed in the latest contract details.
The commissioned first phase contains 82,528 photovoltaic panels rated at 450Wp each, according to Tauron’s project record. The developer has also previously described its inverter and transformer arrangements, which collect the panels’ direct-current output and convert it into alternating current suitable for export. Those existing-plant quantities describe work already delivered in 2023; they must not be read as a list of equipment newly purchased under the 2026 contract.
Tauron records an existing 110/20kV electrical interface for the Mysłowice development. The new contract expressly includes its expansion, alongside installation of power equipment and medium-voltage cable connections. The electrical additions must be coordinated with the equipment already serving the operating solar phase, including the limits of the shared transformation and switching infrastructure.
The new panels will connect through inverters and local collection circuits before their output reaches medium-voltage distribution within the site. Cable selection, switching and protection have to accommodate the additional currents and the way multiple inverter groups respond to faults and grid disturbances. The design must also account for access to the existing plant during construction and for the electrical separation of working areas from energised circuits. The awarded scope confirms medium-voltage connections and substation work, but does not specify the final number of transformers, kilometres of new cable or inverter supplier. Nor does it establish whether the existing collection infrastructure will remain unchanged throughout the works.
Tauron has previously detailed the substantial cabling involved in the first phase, including hundreds of kilometres of direct-current conductors, approximately 14.4km of medium-voltage cable and a separate 110kV connection towards Jaworzno III. Those quantities describe the earlier construction and provide context for the complexity of the additional works. They are not specifications for the PLN111 million contract.
An additional 55MW of solar capacity changes the electrical duty of the collection and export systems, even where the original substation was built with expansion in mind. Engineers will need to verify protection settings, equipment ratings and isolation procedures before connecting the new feeders to circuits already carrying generation. The timetable therefore covers more than panel installation: substation works and controlled energisation are part of the delivery sequence.
Construction will also need to take account of an existing power-producing site. The first 37MW was completed in 2023 and its expected annual generation was approximately 39GWh under the company’s published project assumptions. Any future production estimate for the combined installation would depend on the final capacity, module configuration, irradiance and plant availability. No revised annual output forecast for the enlarged 92MW site was supplied with the latest contract details.
Tauron had identified the additional phase in its development programme before announcing the contractor. The PLN111 million figure is the net value of the awarded work, not necessarily the total capital cost of completing and financing the 92MW complex. Earlier first-phase investment figures and loan arrangements refer to a different stage of the project and should not be added to the new contract without a consistent cost breakdown.
El Professional’s immediate tasks now concern installation of the new photovoltaic field, collection network and associated substation equipment. Testing will need to demonstrate the operation of the protection and switching systems before energisation. Tauron’s stated completion target remains the second quarter of 2028, while the original 37MW installation continues as a separate operating phase.
