In December 2008, the Lisbon municipality approved the Lisbon Energy and Environmental Strategy, a document that sets very clear targets regarding energy, water and materials consumption in the city of Lisbon. In line with the National Action Plan for Energy Efficiency, the Lisbon targets are to achieve by 2013 an energy consumption reduction of 8.9%, achievable through energy management in buildings and transports. Conscious of its role in the City the Lisbon Municipality took upon itself more ambitious targets regarding the Municipality’s patrimony total energy consumption, establishing a reduction of 9.4% of the Municipality’s total energy consumption until 2013. These objectives are to be meet through the intervention in Lisbon’s Municipality built patrimony, Municipal fleet and through the active awareness and cooperation of its technicians.
The Lisbon Pilot takes place at the Lisbon Municipality Main Office Building
The Lisbon Municipality Main Office Building is located in the Lisbon city centre, Entrecampos and started to function in 1998, serving both as administrative office and public attending services where presently receives 1800 employees and approximately 200 daily visits.
The building was completed in the nineties and it is a concrete frame, multi-storey building, with high proportion of glazing in the building envelope, very much like most office buildings in Lisbon. It is constituted by 6 building volumes, all interconnected with a total area above the ground of 28.000 sqm; total area under the ground: 17.000 sqm and useful area for working places: 18.000 sqm.
Building exterior view – main entry
Being one of the most important Municipal buildings, Lisboa E-Nova and the Municipality started in 2008 an integrated approach to Lisbon Municipality Main Office Building aiming to analyse the energy consumption associated with the building use and management.
The approach considers three pillars: the building energy performance, the energy fluxes associated with the building technicians’ mobility and the technicians’ behaviour regarding energy use.
During 2008 Lisboa E-Nova and the Lisbon Municipality initiated the building’s energy performance analysis, carried out within the context of the Energy and Indoor Air Quality Certification process. This study aimed not only at identifying the building energy performance class but also the intervention opportunities that promote the building upgrade in terms of energy efficiency. The results revealed a very well managed building, which already integrates several energy efficiency measures like reflecting glass and external thermal insulation.
Some measures are being looked at very closely – such as daylight control systems and substitution of the existing underground car parking lighting with more efficient lighting.
The analysis of energy fluxes associated with the building technicians’ mobility regards the development and implementation of the Building Mobility Plan. This study includes identifying the mobility matrix for the building users and assessing sustainable mobility strategies that foster the reduction of energy consumption in transport use. The identified measures were teleworking, meaning working from home and/or creating smart work centres, teleconference between users, carpooling and online information regarding public transports.
All of measures identified in the Building Mobility Plan already consider users behavioural change, what comes in line with the third project, the SAVE ENERGY Lisbon pilot.
The SAVE ENERGY Lisbon pilot involves the building’s users and promotes a dissemination campaign on good practices regarding energy use in office buildings, influencing their energy consumption pattern.
1st year of SAVE ENERGY
The Lisbon Pilot consists of two separate open space areas, one that serves the Pilot itself and actively communicates with the users and another area that serves as a constant baseline assessment in order to perceive behaviour changes derivate from the actions undertaken within the SAVE ENERGY project.
During the project 1st year the objective was to identify the areas to monitor in the building as well as the technical solution to implement.
In the Lisbon Pilot the measurements will consider the block’s overall electricity consumption, a separate desegregation regarding the electricity consumption in each electrical circuit, plugs, lights, etc and nine measurement points in the office space. Measures will not only focus on energy consumption and two additional parameters regarding energy efficiency and energy consumption will also be monitored, namely the temperature in and outside the room, the room’s humidity and the CO2 contents in the air indoors.
Lisbon Pilot Monitoring System – Technical Solution Design
The pilot will officially start from May 2010 and run to May 2011 and periodically updates will be presented in at the SAVE ENERGY Lisbon Pilot website.
