Energy is essential in our life and we care about it.

The Building Energy and Environment Group (BEE Group) is an autonomous department of the International Center for Numerical Methods in Engineering (CIMNE) involving over 20 researchers (Physics, Engineering, ICT, Environmental Science and Statistics specialists). It was founded in 2001 and has two main offices, one in the GAIA building of the UPC Campus in Terrassa and the other in the EUROTRADING building besides the Cappont Campus of the University of Lleida.

BEE Group meets the challenge of employing our knowledge and experience to help users to get the best possible use out of the energy that they consume.

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Research lines
Our R&D activities are focused on:

Developing better building energy management by improving precision, providing faster response, setting up adaptive and predictive control and making buildings more responsive to users’ requirements and wishes.

Making energy data more useful to professionals and companies by reducing cost and increasing applicability and reliability through Big Data Analytics, personalized energy services and adaptive visual interfaces and mobile applications.

Making energy data more friendly to building users by selecting the most relevant information, by making control more appropriate and by personalising the experience.

We scout the science world looking for knowledge and inspiration

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The BEE Group collaborates with national and international companies and institutions. As BEE Group, we understand that the goals and challenges we face could be achieved better if companies that are sensitive to the needs of society and researchers who develop cutting-edge innovations work together.

Research Centers and Universities

UPC - Universitat Politècnica de Catalunya
UdL - Universitat de Lleida
Universidad de Granada
De Monfort University - Leicester
University of Belgrade
TUWIEN - Technische Universität Wien
BSC - Barcelona Supercomputing Center
IREC - Institut de Recerca en Energia de Catalunya
JRC - Joint Research Centre
UNIMORE - Università degli Studi di Modena e Reggio Emilia
ITL - Institut Tecnològic de Lleida
NKUA - National and Kapodistrian University of Athens
Eurac Research
Universidad de Málaga
Instituto Eduardo Torroja de la Construcción
Grupo Termotecnia - Universidad de Sevilla
CDT Chile
UMSA - Facultad de Ingeniería
URV - Universitat Rovira i Virgili
Politecnico di Torino
COAC - Escola Sert
HFT - Hochschule für Technik Stuttgart
DTU - Department of Applied Mathematics and Computer Science
La Salle - Universitat Ramon Llull
UPF - Universitat Pompeu Fabra

Public Institutions

ICAEN - Institut Català d'Energia
Gencat - Departament de Territori i Sostenibilitat
Diputació de Lleida
Diputació de Girona
CILMA - Consell d'iniciatives locals per al Medi Ambient de les Comarques de Girona
ALEM - Agencia Local de Energía de Murcia
Municpality of Bar (Montenegro)
APSE - Applied Solar Energy
Regione Emilia-Romagna
Ajuntament de Manresa
La Paeria - Ajuntament de Lleida

Consultants and Architecture

Pich - Aguilera Architects
Agency 9
RSM Gassó
ALEC - Agence Locale de l'Énergie et du Climat
Power Link Ghent University

Utility companies

Iren Energia
GEG Grenoble
Linz AG
Som Energia
Factor Energia
Grup El Gas
Nexus Energía


Prefabricats Pujol
ASEFAVE - Hydrobuilding systems

Social Housing

INCASOL - Institut Català del Sòl
FORUM SA - Foment de la Rehabilitació Urbana de Manresa
HMP - Habitat Marseille Provence

International & NGOs


In Lleida we manage an experimental facility for testing of Ventilated Double Skin PV (VDSPV) façades.

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LOT (Lleida Outdoor Test)

Is an isolated booth provided by a type of VDSPV façade structure and a climatic control system and air capturing, it is used for performing VDSPV façade testing in real scale and weather conditions.

TRE-L (Test Reference Environment – Lleida)

Is composed by three elements used for performing PV module testing under different stress environmental conditions.

Main objective of the test facility

The Lleida Outdoor Test cell (LOT) is a full-scale test facility for the comprehensive study of the energy performance of ventilated double skin facades in outdoor conditions. High quality data sets from the tests may be used for evaluation and modelling purposes. The installation allows for the analysis of the effect of the air gap width, air flow regimes and materials of the façade. It is also prepared for the detailed analysis of double skin integrated PV systems and their with HVAC systems. The façade may operate under natural and forced ventilation and the effect over the building is measured in a well-controlled test cell.

Contact us
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CIMNE Building Energy and Environment Group
GAIA Building (TR14) Campus Terrassa
Rbla. Sant Nebridi, 22 – 08222 Terrassa (Barcelona)
Tel: +34 937 398 987

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CIMNE-BEE Group Lleida
Parc AgroBioTech
Turó de Gardeny, s/n, Edifici H3, Planta 1, Oficina 11 – 25003 Lleida