A thermographic inspection of the complex reported near-zero heat losses.

• Masonry - Wienerberger, Porotherm Clay Block Walling System
• HT-coated facades - Agrob Buchtal, Hydrophilic Tile ceramic coating with self-washing effect
• Alucobond non-combustible aluminum composite panels Class A
• Limestone

• Gypsum and lime-cement plaster Knauf-MPI25 for machine application

• Facade thermal insulation - Rockwool mineral wool, thickness 15 cm
• Roof thermal insulation - FIBRANxps extruded polystyrene panels, thickness 20 cm
• Soundproofing – Copersound, Italy
• Waterproofing - SBS waterproofing Polyelast Extra, Czech Republic

The technical characteristics of the windows and frames are determined based on a 3D model, taking into account the actual location of the complex to avoid reflective glare on nearby buildings.

• Shopping Centre - facade system: aluminum frames Schuco FW 50+, cable-stayed structure "spider" system
• Shopping Centre - “Sky Light” roof glazing produced by Schuco
• Residential and office areas - aluminum system Schuco series AWS / ADS 70.HI with the highest degree of thermal insulation

• Residential section and offices - insulated glazing units consisting of three-sheet float glass with a thickness of 48 mm
• Shopping Centre - insulated glazing units consisting of two-sheet float glass
• External sunscreen blinds WAREMA managed centrally via using weather data from two stations on the roof

• Apartment security doors (armoured, custom-made as per individual project by Solid 55)
• Aluminum doors for apartments and offices produced by Schuco
• Fire-resistant steel doors produced by Novoferm

• Shopping Centre and stairs - granite from Brazil
• Offices – fine stoneware tiles from Italy

• Shopping Centre and stairs - limestone
• Offices - fine stoneware tiles from Italy

• Pitched roofs covered with copper sheathing
• Flat roofs lined with clinker tiles produced by Agrob Buchtal

• Installed solar panels Eco Focus produced by Innotech Solar

This technology is up to 50% more energy efficient than conventional elevators and escalators. Regenerative drives ReGen™ increase efficiency, reducing energy consumption by up to 75% through energy conservation and returning it back into the grid - circuit of the building.

Sewerage system – cast iron pipes, Wilo pumps, Geberit structures, etc.; resistant to microorganisms, mold and atmospheric influences. The pipes are fire resistant and 100% recyclable.

• Soundproof installation shafts
• Reservoir for domestic water supply and split systems for discharging domestic, rain and condensation waters.

The water supply system has two additional filters:

• UV - FILTER which serves for disinfecting water flowing through it by means of UV lamps.
• MECHANICAL FILTER (100 microns) which purifies all water facilities and prevents them from clogging.

Individual measurement of water consumption for each of the premises is provided.

The water pipes are coated with aluminum layers.

• Air conditioning - DAIKIN air-to-water heat pumps for the residential area and TOSHIBA three-pipe VRF freon systems for offices, shops and restaurants
• Hot water for the public sector is provided by high-temperature heat pumps Carrier. Domestic hot water for the residential section is produced by boilers which are integrated into the indoor units of the heat pumps.
• Ventilation is filled with highly efficient air conditioning cameras DamVent with a first step - recuperative heat exchangers and secondary recovery by heat pumps in the channels of the treated air.

The complex has an installed electric capacity of 4 MW, the power supply is ensured by two substations. Reservation of power is carried out with two diesel engines with a capacity of 900 KW.

• trays with overcurrent protection.

• Philips LED lighting fixtures

• Central battery and lighting system for testing the preparedness of each lighting fixture
• Emergency lighting on the evacuation route, hydrants and exits provided to enable swift and safe evacuation of the building
• LED evacuation lighting - RP-Technik

• Provides reliable performance of all systems, unimpeded use of stairs and ramps, thawing gutters, siphons, culverts and terraces, satellite box.

Schneider Electric Bulgaria delivered and implemented a new platform for building automation - StruxureWare Building Operations (SBO) providing centralized monitoring, control and management of the HVAC system, electrical installations and fire safety of the complex. Furthermore, an energy management system was integrated in all parts of the building.

• Bosch fire alarm system for accurate, reliable fire detection and notification

• Bosch equipment, all security systems are integrated into a common system for visualizing events
• Access control

During the design and construction of San Stefano Plaza - the first complex in Bulgaria that has obtained Energy Efficiency Class A, the principles of sustainable construction were applied. It was achieved using leading-edge technological solutions, high-quality natural materials and innovative energy saving installations.