Sustainability

The evergreen runner plants that will be used on the exterior facade of Metrodom Green are already growing in the nursery so that they can be placed in the facade planters and plant grids in a pre-grown state. The low wing roofs will be designed as intensive green roofs, mainly with shrubs, which will not only provide a pleasant view, but will also contribute to the thermal insulation and cooling of the building in summer by evaporation from the soil and plants. The larger part of the inner garden is also technically an intensive green roof, under which the underground parking garage is hidden. However, we have also created several areas where the garden is directly connected to the ground below by breaking through the garage, allowing the planting of large shade trees. The watering of the front plant boxes, the interior and exterior garden and the green roofs is ensured by the irrigation system installed. It is a carefully designed system, optimized for economy and using every drop of water. Irrigation starts at the frontal planters at the highest point of the building on the 9th floor. Drip water is collected from the bottom of the crates and piped downwards to the crates on the 7th and 5th floors. From here, the runoff water is piped to the green roof irrigation system at the top of the low 3-storey wings, and the runoff water from under the green roofs is channeled to the cistern of the residential complex along with the condensation water that forms on the outdoor unit of the heat pump in summer. The cistern is used to store the drainage water collected from the upper floors and the rainwater collected by the gutters, in addition to the condensation water, and from this cistern the large internal and external gardens are irrigated. In this way, the water that has travelled a long way is recycled again and again, which not only helps sustainability but also reduces the water bill of the house.

The "AA" rating of Metrodom Green is considered outstanding among residential complexes. The Porotherm Klima bricks used as infill masonry for the façade, the thermal insulation on top, the 3-layer glazing of the windows and balcony doors, all help to keep the cold in in summer and the heat in winter. The Dual-Eco system for cooling and heating is based on heat pumps, but the solar panels on the roof also generate electricity. This is also reflected in the maintenance costs of the apartments.

In Hungary, the current two-letter system has been used for the energy classification of buildings since 2016. The system classifies apartments and residential buildings in 12 grades from the worst "JJ" to the best "AA++". Houses and apartments built in the 2010s typically already have a "CC" rating, which is still considered good enough for today's energy-efficient buildings. From 2021, in principle, only "BB" (near-zero energy) houses could be built, but this deadline has been extended again and again, so that there are still plenty of CC-rated houses being built, which not only have poorer insulation, but also use district heating instead of modern, renewable energy or rely exclusively on natural gas.

In addition to the greenery, energy efficiency is what sets the complex apart from its competitors. Metrodom Green, like Metrodom's current apartment buildings, has an energy rating of "AA", better than near-zero energy, which is a single value that shows the energy the building produces and uses, and how efficiently it does so.

The solar panels on the roof of Building B operate on a similar principle to their counterparts on the roofs of detached houses. They do not directly cover the consumption of the house, but feed the electricity produced into the electricity system, and the condominium only pays for the difference between production and consumption, the "excess consumption". The production from the solar panels roughly covers the electricity consumption of the common areas. This is mainly the consumption for lighting the corridors and the garage, for moving the garage doors and for operating the lifts. The operation of the heat pumps, i.e. cooling and heating the apartments, is not covered by the solar panels, nor is the electricity consumption of the apartments or the charging of the electric cars. In addition to sustainability, the production of electricity for the community consumption of the condominium also reduces the common costs spectacularly compared to other similar residential buildings.

In the interests of sustainability, Metrodom Green is already ready to ensure that from 2035 only new cars with zero emissions can be registered in the European Union, including Hungary. Each garage has its own electric car charger, so everyone can charge their electric car at home conveniently and economically (for more information about our electric car charger, how it works and how to use it, please visit our website here). Furthermore, the complex also has a three-station green-go point, so car-sharing is a viable alternative to owning your own vehicle. In addition to cars, there are other sustainable transport options, with bike storage facilities inside the building and a MOL Bubi station in front of the complex.