The initiative has been conducted within Alterenergy, a Strategic Project funded within the cross-border Cooperation Programme IPA-Adriatic 2007-2013.
It regards Agnone, a municipality in Molise Region ( population: 5,028 inhabitants, altitude: 830 m a.s.l ). Eight municipal buildings in town have been selected (town hall, schools and historical buildings) together with a reference meteorological station.
The aim was to test a methodology to obtain, in short time and at low cost, a preliminary package of interventions for the energy efficiency improvement of buildings; the municipal real estate has been considered as whole and on the base of empirical data evidence.
Once the building stock and a preliminary package of interventions have been identified, professionals and ESCOs can be involved for detailed design and implementation according to standard procedures at national and regional level.
The initiative has been split into three phases.
Phase 1: Building Modelling and Configuration Buildings Site Survey.
Collection of building drawings, dimensions, equipment characteristics, space utilization. Installation and start-up of Planergy™ Information System. Set up of a data base on buildings qualitative and quantitative characteristics focused on operational usage and on energy behavior.
Phase 2: Energy operational assessment
Data metering collection from invoices (period 2011-2013). Energy consumption metering (i.e. weekly measurements from energy meters in buildings and from meteo station). Data recording, analysis and processing. Usage and energy performance indicators have been computed based on building characteristics (e.g. volumes, dimensions, envelope surfaces, usage, energy flows behaviour) and on measured energy consumption.
Phase 3: Definition of a portfolio of energy efficiency Improvement measures on real estate
Adoption of a catalogue of feasible solutions to be considered for the building stock under investigation. Interventions not compatible with existing zoning ordinances have been discarded. Assessment of expected impacts of each measure on each building and estimation of their related costs. Selection of those measures which are convenient in terms of cost benefit ratio.
The selected investment package regards 32 energy efficiency measures on eight buildings. Expected results from the initiative:
- Expected reduction on annual energy expense: -18,7%;
- Investment Pay Back Time: 11 years.