Since 2007 there has been a national Energy Performance Certificates database system in Portugal which is managed by the Portuguese Energy Agency (ADENE). 19% of the EPCs of the buildings, about 780,000, have been collected so far. The EPC data is uploaded by qualified energy experts.
ADENE has direct access to the raw data and provides monthly technical, generic and specific data for different Portuguese entities on statistics, benchmarking and financial reports. The database also provides data to assist development of the EPC such as the evaluation of the impact of energy saving measures, identification and analysis of potential financial and energy savings from the recommendations stated in the EPC.
The data is used to verify the effectiveness of some of the National Energy Efficiency Action Plans measures and has had impact on the new building regulations and energy performance improvement requirements for both residential and non-residential buildings, including public and service buildings. EPC information provided real values of building elements, technical systems or even adjustments on the scope of the work, establishing cost-optimal approaches.
Database evaluation and improvement possibilities have been made available for market actors such as trades people including large communication campaigns, with key stakeholders involved. The statistics institutes have used the data to verify the impact of the energy label and its impact on the sales/rent market prices. The real estate sector promotes the value of the buildings’ energy class in the selling or renting market and monitors market activities by counting the issued EPCs.
There is also information sharing with municipalities on building permits and market value in terms of energy label and the size of the property.
The municipalities are able to base their retrofit strategies and prioritize intervention areas on evidence obtained by having access to the EPC database.
The tax offices validate the retrofit works associated with tax deduction and collects information to validate the energy class of houses with higher tax deduction incentives.
The real estate market association produces a market study catalogue and a Web service for label advertising with credible data.
The universities and research institutes use the database for their studies and characterization of the Building Park, by typology and/or region (for master/PhD thesis, papers).