## 3 Results. How is GPP Implemented in Spain?
### Application of Environmental Measures in the GPPRB: Examples  
As mentioned above, the tenders incorporating environmental measures with relevance in award criteria are still insufficient [14]. However, both in the EU and Spain, there are many success cases in which these measures are defined and valued. Below, three examples of good practice in Spanish regions are described:  
* Refurbishment of the facade in a warehouse converted into a youth center in Alzira, Comunitat Valenciana [108]: in the tender, the adoption of comprehensive solutions was established as a priority criterion, as well as a demonstration of energy efficiency and LCC, by using common verification tools for all participants. Based on a theoretical starting solution, each bidder was asked to prove the energy performance improved on the solution proposed. Compared with the baseline model, the solution contracted for this refurbishment showed a 15% reduction in heating demand (from 63 to 54.6 kWh/m2 per year) and a 19% reduction in cooling demand (from 34.1 to 27.5 kWh/m2 per year). Furthermore, the determination to sustainably renovate an existing building rather than undertake a new construction also reduced CDW and raw material extraction. The tender emphasized the ease and low-energy intensity of maintenance as well as material guarantees, therefore minimizing future costs.
* Energy self-sufficient hospital in Ourense, Galicia [109]: the main challenge for the contracting body was to optimize energy consumption in the extension of the existing hospital. For this, two complementary tenders were called, focused on both improving the energy facilities and the software monitoring energy management system. The main award criteria used were based on the performance of the energy equipment proposed (electrical and thermal), CO2 emissions produced by facilities, electrical efficiency of the cogeneration engine, thermal efficiency of the biomass boiler, as well as chiller absorption.
* Refurbishment of the town hall building in Amorebieta-Etxano, Pais Vasco [110]: prior to the tender, the City Council commissioned a preliminary study to analyze three possible scenarios: complete refurbishment, partial reform or new construction. It was concluded that the best option was the first one but maintaining the original two-story structure and adding a third one. The criterion for this choice was the saving of 20% of resources, compared to the new construction. Based on these results, the City Council launched the tender, taking into account \"sustainability criteria, thermal and light comfort and a building integration in urban landscape\", among others. The successful tenderer designed and built a building with a high environmental sustainability rating, according to the building rating system in the Pais Vasco. Some of the environmental measures to favor this rating were: maintenance of the main facade; reuse of materials from the building itself according to the concept \"cradle to cradle\" or \"the best product is the one that is already there\". For this, a selective demolition of the building was carried out for material recovery, such as stone.  
In the three examples, the valuation of environmental measures on other criteria was much higher than 10% of the current EU average, as mentioned in the introduction.