What we do
Everything an energy investment needs — in one place.
Design, substations of all voltage classes, overhead and cable lines, battery parks and photovoltaic plants, industrial construction, district heating networks, water and sewer works, maintenance and construction-waste recycling.
Design
Full investment design of substations, overhead and underground lines and battery parks; structural design and our own foundation systems; permitting — from concept design to building permit; projects under foreign legislation (Romania).
Substations — all voltage classes
Step-up substations 20 / 33 / 110 / 220 / 400 kV; switching (interconnection) stations for connecting energy projects to the grid; reconstruction and extension of outdoor switchyards; 20 kV metal-clad switchgear.
Power lines
Overhead lines 20 / 33 / 110 / 220 / 400 kV, including interconnectors; underground cable lines 20 / 33 / 110 / 220 / 400 kV; cable ducts in substations; fibre-optic links (OPGW / OPUG).
Battery parks and photovoltaic plants
Design and construction of battery parks (BESS) in single, double and quad configurations; our own foundation systems and oil-containment basins for BESS and PCS; PV plants and rooftop systems; integration of storage with operating hydro and wind plants.
Maintenance of energy facilities
Service maintenance of substations and switchgear; maintenance of battery parks and their supporting infrastructure; maintenance of PV plants and rooftop systems.
High-rise and industrial construction
High-rise buildings and associated infrastructure; production, warehouse and office buildings; rope-access repairs of structures; fabrication of structures from profile and sheet steel.
Installation, reconstruction and repair
Lifting and process equipment, pipelines and gas lines; site district-heating networks, substations and internal heating systems; boiler houses, energy facilities, diesel and fuel-oil farms; installation of power conversion systems (PCS) together with BESS.
Site works and hydraulic engineering
Design and construction of site infrastructure; water supply and sewer networks and facilities; reconstruction, rehabilitation and restoration of cultural-heritage sites; construction categories I – V.
Construction-waste transport and recycling
Transport and processing of construction waste (concrete, bricks, tiles, mixed); our own crushing and screening equipment; permits for 14 regions of the country.
400 kV power lines
Foundations, towers, conductors, OPGW.
We build overhead lines up to 400 kV from route to energisation — foundations, assembly and erection of tension and suspension towers, stringing and sagging of conductors, and earth wire with embedded optical fibres (OPGW).
- New 400 kV line — Lot 3, towers No. 288 – 427
- “Gabare” — a new 23.6 km 400 kV line to “Mizia” substation
- “Tenevo Solar” — reconstruction of the “San Stefano” 400 kV line
Our own crews for tower erection and conductor stringing, our own machinery and qualification for work on installations above 1000 V.
How we work
One contractor for the whole chain.
The investor has one accountable partner — for design, permits, supply, construction and commissioning.
Design and permits
Concept and technical design, agreements with the grid operator, building permit.
Supply
Transformers, HV equipment, cables, battery modules, PCS — or to the client’s specification.
Construction and installation
Foundations from our own production, steel structures, equipment installation, cable routes, protection relays.
Commissioning and maintenance
Testing, commissioning, connection to ESO / the DSO and service maintenance after the warranty period.
Grid connection
Specialists in the link between a renewable project and the transmission grid.
33/110 kV and 33/400 kV step-up substations, 110 kV cable lines, new bays in ESO substations, 400 kV switching stations — we build the external connection of power plants and battery parks across the country.
- “Tenevo Solar” — MV/400 kV substation, 400 kV switching station and reconstruction of the “San Stefano” 400 kV line
- Burgas — 110/20 kV substation and a 110 kV cable line to the “Burgas” 400/110 kV substation
- “Kameno” and “Brusartsi” — two new 33/110 kV substations with line bays in ESO substations
- “Gabare” — 33/400 kV substation with a 350 MVA transformer, 23.6 km 400 kV line and a new 400 kV bay at “Mizia” substation
