Construction of a substation for a photovoltaic power plant near Dobrich
As part of the project, Varaks Construction carried out a comprehensive range of construction and installation works related to the construction of the substation and its associated infrastructure.
The construction works for the substation serving the photovoltaic power plant near Dobrich included:
- Earthworks – mechanical and manual excavation, loading, transportation and disposal of excavated soil, subgrade preparation, and backfilling;
- Formwork works – formwork installation and removal for foundations, walls, and flooring;
- Reinforcement works – installation of reinforcement steel for foundations, walls, and flooring;
- Insulation works – installation of polyethylene and XPS insulation beneath floors and in cable ducts, as well as XPS insulation along the walls of cable ducts and the external walls of strip foundations;
- Concrete works – placement of blinding concrete and concrete for foundations, walls, and flooring;
- Other construction works – installation of expansion joints around columns and filling them with polyurethane sealant.
Cable pits and ducts were also constructed, with the associated works including excavation, drainage, geotextile installation, formwork, reinforcement, and concrete works.
As part of the overall project execution, we also constructed a concrete perimeter fence around the site.
Through this project, construction companyVaraks contributes to the development of reliable infrastructure for clean energy generation and to the sustainable development of the energy sector.
Project details
- Start Date:09.2026
- Location:Dobrich
- Category: Industrial building
- ID:I-147
Progress of the works - Construction of a substation for a photovoltaic power plant near Dobrich
The construction of the substation serving the photovoltaic power plant near Dobrich continues. Works are being carried out on the construction of the cable basement, including formwork, reinforcement and concrete works. The strip foundations have been completed, as well as the shuttering and reinforcement of the reinforced concrete walls and ramps up to level 0. These have been concreted, with the required curing measures implemented and proper concrete vibration carried out. The construction workers installed thermal insulation on the walls of the cable basement.
The phased construction of the backfill has commenced, including spreading and compaction. As part of the construction works, concrete cable trenches have been constructed both inside and around the substation. The base preparation has been completed by placing and compacting gravel, followed by the installation of polyethylene and XPS insulation beneath the concrete base of the cable trenches. The concrete bases and walls of the trenches have been cast.
Installation of the substation's steel structure has commenced.
At this stage, thermal insulation works on the walls are also ongoing, together with the installation of water supply and drainage pipes.
Construction company Varaks completed the gravel backfill inside the substation.
Beginning of the works - Construction of a substation for a photovoltaic power plant near Dobrich
Building company Varaks started the construction of the substation serving the photovoltaic power plant near Dobrich by setting out and surveying the site. The substation is a complex facility and its building began with mechanized excavation for the foundations using specialized heavy-duty construction equipment. Due to the presence of rock within the foundation area, additional rock breaking was required using a hydraulic breaker and excavator. The excavated soil and rocks were loaded and transported by dump truck.
After the completion of the mechanized excavation, the construction workers shaped the excavation manually and outlined the foundations. Formwork for the base concrete was then fitted and the required levels were established according to the different elevations specified in the design.
The base concrete was poured in stages to ensure precise compliance with the specified design elevations and construction phases. Then, the construction of the reinforced concrete foundations of the substation began.
Shuttering and reinforcement works are being carried out on site, including complex reinforcement detailing in accordance with the design requirements.
