In the course of time, Promelek XXI contributed to the completion of large-scale construction works by providing electrical installations solutions.
Airports and infrastructure:
Cluj-Napoca, Băneasa, Sibiu airports, the expansion of Metrorex București, the bridge from Satu Mare, passenger coaches.
Polus Center Cluj-Napoca, Polus Center Constanţa, Iulius Mall, Cotroceni Park, Park Lake Cluj.
BRD Tower București, Floreasca Business Center, Amera Tower, Vitrina Media, the IT laboratory from UBB Cluj, Fortech, Drusal.
Ramada – Oradea, Hilton – Oradea, Black Tulip, Napoca, Alex & George, Metropolis.
Wind Park, Emmerson