Triple Space

6675 Last modified by the author on 22/03/2021 - 10:36
  • Building Type : Office building < 28m
  • Construction Year : 2019
  • Delivery year : 2020
  • Address 1 - street : Calle Ferraz 56, bajo dcha. 28008 MADRID, España
  • Climate zone : [Csa] Interior Mediterranean - Mild with dry, hot summer.

  • Net Floor Area : 422 m2
  • Construction/refurbishment cost : 522 480 €
  • Number of Work station : 50 Work station
  • Cost/m2 : 1238.1 €/m2
  • Primary energy need
    78.8 kWhpe/m2.year
    (Calculation method : RD: 47/2007 )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

This building was awarded the Sustainable Renovation Grand Prize of the Green Solutions Awards 2020-21 at the national level; and a mention for the same category at the international level.

Triple is a coworking and events space located in the heart of Madrid that represents the concept of Triple Balance. Inside of it, organizations and activities whose vocation is to generate a positive environmental, social, as well as economic impact converge. 

It was born from the rehabilitation of an old industrial building located in a courtyard. It has 538 m² distributed over three floors and the geometry of the building gives it a special character: its sloping roof-facade provides a powerful source of natural light that is distributed throughout the interior.

A series of ecological principles and design tools are applied to achieve the least possible impact on the environment where it is located and make Triple a healthy space. A space that respects the environment, offers maximum comfort and well-being to its users, and improves their productivity.

All this together with the use of ecological and proximity materials, the use of available resources to save energy, and an air monitoring system that maintains good air quality in the space, which is especially important in the context of COVID-19.

It is the first coworking building that received zero CO2 certification from the Spanish association Ecómetro

The use of Ecómetro's LCA tool during the design and construction phase allowed us to make data-driven decisions to reduce the environmental impact from the beginning of the project. The emissions emitted have been offset through a reforestation program. The building is 100% electrified and the utility company provides renewable energies.

Data reliability

3rd part certified

Photo credit

Living Eye


    Anomalia Business Design

    Raquel Traba Galisteo, raquel[a], Calle Ferraz 56, 28008 Madrid.

Construction Manager

    sAtt Triple Balance

    Iñaki Alonso Echeverría/Paloma Domínguez Liñán, Calle Ferraz 56, 28008 Madrid. Tel 914094633


    Thermal consultancy agency

    Alter Technica Ingenieros

    Jesús Soto, jesus.soto[a]

    Energy consulting and design of HVAC and Ventilation facilities


    María Gil de Montes

    María Gil de Montes-Lighting designer, gildemontes[a]

    Illumination design

    Construction Manager

    sAtt Triple Balance

    Iñaki Alonso Echeverría/Paloma Domínguez Liñán, Calle Ferraz 56, 28008 Madrid. Tel 914094633

    Work execution

    Environmental consultancy

    Fundación para la Salud Geoambiental

    Fernando Pérez, fernando.perez[a]

    Geoenvironmental study

Contracting method

Other methods

Owner approach of sustainability

Triple was born with the aim of bringing together triple balance companies, companies with a positive impact or in transition, under the same roof. The space also reflects these principles, which is why it is a healthy space that takes care of people and the environment.

Triple is the first space, but more are planned.

Architectural description

An architecture that respects the environment and people's health has been developed based on these measures:

  • Building CO2 null

  • Air quality and technology

  • Energy efficiency and passive measures

  • Healthy and proximity materials

  • Vegetation

  • Geoenvironmental analysis

Energy consumption

  • 78,80 kWhpe/m2.year
  • 161,88 kWhpe/m2.year
  • RD: 47/2007

  • 37,60 kWhfe/m2.year
  • Heating = 14.7 kWh / m2 year Cooling = 5.7 kWh / m2 year DHW = 2.4 kWh / m2 year Lighting = 14.6 kWh / m2 year

  • 1,00 kWhpe/m2.year

Envelope performance

  • 0,30 W.m-2.K-1
  • U enclosure: 0.30 W / m²KU covered: 0.25 W / m²K


    • Heat pump
    • Fan coil
    • Individual electric boiler
    • Others
    • Fan coil
    • Double flow heat exchanger
    • Heat pump

    The air conditioning (cooling and heating) is carried out through an air-to-air heat pump system. The system is zoned and has both cassette and wall-mounted indoor units. All these units are associated with outdoor units located on the roof.

    The ventilation is controlled by a mechanical double flow with heat recovery. Controlled mechanical ventilation is the most effective way to combat the buildup of biological, chemical and radioactive contaminants, and dual flow with heat recovery avoids the energy losses of traditional systems. Emission through duct networks that will use central ventilation with heat recovery, dimensioned for the projected occupation.

    These systems improve air quality and therefore people's HEALTH and COMFORT.

    - Passive strategies: insulation of the envelope and solar protection. - Internal loads: people, equipment - Heat recovery through ventilation

GHG emissions

  • 2,00 KgCO2/m2/year
  • The Life Cycle Analysis methodology of the LCA ECOMETER tool has been used.

  • 303,00 KgCO2 /m2
  • 30,00 year(s)
  • 363,00 KgCO2 /m2
  • The emissions from the construction phases are offset by a carbon footprint offset program. The use phase does not generate impact since the energy comes from renewable sources.

Life Cycle Analysis

Water management

    We use a ceramic filter to obtain water free of odors, pathogens and other substances and thus obtain a good quality of drinking water. Aerators are installed in taps to reduce the flow to 0.6 l / s.

Indoor Air quality


    The double-flow controlled mechanical ventilation system (with heat recovery unit) has filtration units that clean the air of particles, guaranteeing indoor air quality.

    Ventilation equipment with heat recovery supplies fresh filtered outdoor air with a sufficient and proportionally adjustable flow to the premises. At the same time, they suck in an equivalent volume of stale air, laden with CO2, and remove it as evacuated air, reducing at the same time the possibility of suspended particles containing viruses and bacteria. This also effectively removes other harmful substances, such as odors, fine dust, moisture, etc. Heat recovery takes place by means of a corrosion resistant rotary heat recovery unit with heat recovery factors of up to 90% and moisture recovery factors of up to 90%. This considerably reduces the primary energy costs of the heating installation. The SFP (Specific Fan Performance) value also reflects the high degree of energy efficiency.



    A study has been carried out aimed at the identification of the different risk factors present in the place, factors of geophysical, physical, chemical and biological origin. Geoenvironmental analysis is a tool for disease prevention. After the analysis, the corrective measures are indicated for the values that are above what is considered acceptable according to the NORMA FSG 2015 V.1 regulation.

    The main environmental exposure factors are:

    • Low frequency alternating electric fields.
    • Low frequency alternating magnetic fields.
    • Harmonics in the installation
    • High frequency artificial electromagnetic radiation.
    • Electrostatic or continuous electric fields
    • Continuous magnetic fields or magnetostatic
    • Environmental radioactivity and especially radon gas.
    • The geophysical activity of the terrain: magnetic field and terrestrial radiation.
    • Artificial lighting.
    • The levels of aldehydes and especially formaldehyde.
    • The levels of VOCs.
    • The levels of particulate matter.
    • Nitrogen dioxide gas levels
    • Sulfur dioxide levels.
    • Carbon dioxide levels.
    • Ozone levels.

    Controlamos la concentración de CO2 interior a través de un sistema de monitorización continuo, con un medidor en cada planta del edificio. Permite el control en tiempo real, así como conocer un histórico diario de distintos compuestos y sustancias (CO2,


    InBiot system


    Recycled cotton fiber insulation


    Insulation based on regenerated textile waste, which constitutes up to 85% of the composition of the product. Not only do they not consume hardly any resources, but they also contribute to eliminating waste from other industrial processes to incorporate them into architecture, promoting the circular economy.It has a low CARBON FOOTPRINT, helping to minimize global warming and reduce waste from the textile industry. WITHOUT TOXICITY throughout its useful life and non-irritating. Origin: Logroño (Spain).

    Vegetable paint


    Vegetable paint is a low-emission, solvent-free aqueous emission naturally derived from organic and mineral products. It is a 100% natural product that does not present any compound derived from petroleum. The paint cans have been recycled as flower pots for the plants. Origin: Barcelona (Spain) / Germany /

    FSC certified wood

    Furniture and carpentry made with FSC certified wood. Birch and oak wood treated with organic oil (Naturtrend Zweihorn). Origin: Madrid (Spain) / Romania.

Construction and exploitation costs

  • 580 160

Urban environment

The building is located in a central area of Madrid. Access is made directly from the street on the ground floor. It has all the necessary services and the Parque del Oeste at 5 minutes on foot.

The reform of the envelope has taken into account the integration into the interior of the block patio where it is located. For this reason, aesthetic solutions have been chosen from this perspective.

The place has a bike parking space that promotes sustainable mobility alternatives, both for the organization and for the neighborhood.

Land plot area

250,00 m2

Built-up area

535,00 %

Building Environmental Quality

  • indoor air quality and health
  • works (including waste management)
  • comfort (visual, olfactive, thermal)
  • energy efficiency
  • renewable energies
  • products and materials

Reasons for participating in the competition(s)

Edificio CO2 nulo

A través de la herramienta ECÓMETRO ACV, se desarrolló el Análisis de Ciclo de Vida para calcular, entre otros, el impacto en Huella de carbono de la obra. El resultado fue de 196 toneladas de CO2 (364 kg/m2), que ha sido compensado a través de un programa de reforestación. La compensación del CO2, unida a la completa electrificación del edificio y el uso de energías 100% renovables hacen de TRIPLE un espacio CO2 nulo.


Calidad del aire y tecnología

La ventilación es mecánica controlada de doble flujo con recuperador de calor (VMC), lo que supone un ahorro de un 40% respecto a un sistema convencional. De este modo hay una renovación continua con aire exterior filtrado a través de filtros que eliminan hasta el 80% de las partículas contaminantes (incluidos virus y bacterias) y permiten una buena calidad del aire interior. Controlamos la calidad del aire a través de un sistema de monitorización continuo que mide los parámetros del aire. Permite el control en tiempo real, así como conocer un histórico diario de distintos compuestos y sustancias (CO2, COVs, partículas en suspensión, humedad, ozono, formaldehídos...).. 


Eficiencia energética y medidas pasivas

La estrategia energética es reducir al máximo la demanda a través de medidas pasivas. Para ello se ha aislado la envolvente, se han instalado vidrios con altas prestaciones y se han puesto elementos de control solar. De esta forma conseguimos ahorrar energía y reducir el impacto.


Materiales sanos y de proximidad

Uso de materiales saludables y de proximidad: barro en el suelo, madera certificada FSC en las carpinterías, pintura vegetal en las paredes, aislamiento de textil reciclado para el interior de la envolvente.



Las plantas limpian el aire y generan espacios más sanos y productivos, además de construir una conexión con la naturaleza que nos produce bienestar.


Salud del espacio y análisis geoambiental

La salud de las personas depende de una serie de alteraciones geofísicas perfectamente medibles. Analizamos ondas, partículas, gases, campos eléctricos, luz, formas, colores y vegetación para proponer medidas y generar la mejor relación de las personas con el espacio.

Building candidate in the category

Low Carbon

Low Carbon

Health & Comfort

Health & Comfort

Green Solutions Awards 2020-2021
 architecture sustainability health co2nulo

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Paloma Suárez Pardo

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Green Solutions Awards 2020-2021