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Assessment of the Incentive Rate to Favor the Energy Retrofit of Public Buildings: A Comprehensive Approach for an Italian University Facility

Author

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  • Giuseppe Aruta

    (Department of Industrial Engineering, Università Degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy)

  • Fabrizio Ascione

    (Department of Industrial Engineering, Università Degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy)

  • Nicola Bianco

    (Department of Industrial Engineering, Università Degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy)

  • Teresa Iovane

    (Department of Industrial Engineering, Università Degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy)

  • Margherita Mastellone

    (Department of Architecture, Università Degli Studi di Napoli Federico II, Via Forno Vecchio 36, 80134 Napoli, Italy)

Abstract

The Renovation Wave for Europe highlighted the role of the public building stock for which Directive 2012/27/EU has set an annual renewal rate of 3%, which should rise to reach the goal of decarbonization by 2050. In this paper, the energy retrofit of an educational building—at the academic level—in Southern Italy was investigated. The aim was to evaluate the incentive share, which could accelerate the energy efficiency process, to achieve a cost-effective nZEB. The results show that the highest incentive rate is required for interventions on the opaque building envelope, which are also those that allow the least energy savings. An incentive rate of about 45% for the energy efficiency of the transparent envelope is necessary to reduce the payback time by about 7 years. The efficiency of the plants and the installation of a PV system are energetically and economically convenient even without forms of economic incentive. Finally, if the building is brought to high energy standards—a primary energy saving of 46% and energy class A3—an incentive rate of 40% is required to repay the intervention in about 10 years.

Suggested Citation

  • Giuseppe Aruta & Fabrizio Ascione & Nicola Bianco & Teresa Iovane & Margherita Mastellone, 2023. "Assessment of the Incentive Rate to Favor the Energy Retrofit of Public Buildings: A Comprehensive Approach for an Italian University Facility," Energies, MDPI, vol. 16(11), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:11:p:4483-:d:1162116
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    References listed on IDEAS

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