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

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...

Full description

Saved in:
Bibliographic Details
Published in:Energies (Basel) 2023-06, Vol.16 (11), p.4483
Main Authors: Aruta, Giuseppe, Ascione, Fabrizio, Bianco, Nicola, Iovane, Teresa, Mastellone, Margherita
Format: Article
Language:English
Subjects:
Alternative energy sources
Analysis
building energy efficiency
Building envelopes
Buildings
Cost control
Decarbonization
Economic incentives
Emissions
Energy conservation
Energy consumption
Energy efficiency
Energy industry
Energy resources
Investigations
Investments
nearly zero energy building
Payback periods
public building
Public buildings
Renewable resources
Retrofitting
School buildings
simple payback time
Useful life
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16114483