Public Procurement of Innovation As A Tool for Municipalities Energy Transition: A Case Study in Carcaixent, Spain

This article explores the pivotal role of Public Procurement of Innovation (PPI) in driving energy, sustainability and transition in municipalities, with a particular focus on Nearly Zero-Energy Buildings (NZEBs). As local authorities seek to reduce greenhouse gas emissions and meet the 40% reduction target by 2030, they must assume an exemplary role in promoting energy-efficient practices. The public procurement process offers a strategic opportunity of innovation to achieve this goal. By redefining procurement needs in terms of functionality, municipalities can ensure that public buildings and facilities meet high energy efficiency standards. This approach involves incorporating performancebased criteria into tender processes, such as energy consumption targets and functional requirements. The article presents a case study in Carcaixent, Valencia, Spain, where this innovative approach was applied to the renovation of a historic public building built in 1955, featuring a preserved façade and common areas due to its architectural heritage. The objective of the PPI in the Carcaixent case is the transformation of this building into a sustainable energy hub characterized by reduction on thermal demand (space cooling and heating), consumption reduction and CO2 equivalent emissions savings (on heating, cooling, DHW and lighting), reduced economic costs (considering both initial investment and operation costs over its life cycle), on-site PV generation, achieving a NZEB model. A baseline energy model and scores calculated data sheet were provided to the bidders enabling the proposals assessment in a uniform and standardized way. This strategic approach to procurement empowers local authorities to take a proactive role in shaping a sustainable future, ultimately paving the way for a low-carbon economy.