Page 42 - European Energy Innovation - spring 2019 publication
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42 Spring 2019 European Energy Innovation
COMMUNICATION
The IMPULSE project
Practical guide and tools for public-buildings’ energy efficiency plans
By G.M. Stavrakakis and M. Damasiotis, Division of Development Programmes, Centre for
Renewable Energy Sources and Saving (CRES), Greece
Energy transition to a low carbon economy in the horizon weighted investment cost), thus facilitating bankability
of 2030 goals starts indeed at local level. According to the assessment of projects for entire groups of buildings.
directive 2012/27/EE, public buildings should be exemplary
in terms of energy upgrading projects. To that direction • Gradual renovation planning: Finally, an excel-based
Regions and Municipalities are expected to conduct decision-making tool is developed which allows the
reliable and affordable energy efficiency plans for their user to select and bias decision criteria by means of
public buildings. While the regulatory framework is already which KPIs to optimize as well as to impose the % of
in place, the development and implementation of such floor area of the building stock to be renovated each
plans is still in its infancy especially in the Mediterranean. year. The tool processes the KPIs’ database from the
Indeed, in most Countries there is no common previous step and returns which buildings and what
methodology or guide specifically dedicated for local projects to take place each year, accompanied with
authorities to conduct such plans. Combining the latter the duration of the plan (in years), the expected energy
with other technical, financial and administrative barriers saved, the avoided CO2 emissions and energy-related
(lack of technical data, absent energy management, cost savings.
pending property issues, lack of funding, etc.), delays are
observed in conducting the required plans and eventually The methodology has been successfully applied in six
implementing projects. Mediterranean Cities, namely Heraklion-Greece, Elche-
Spain, Cannes-France, Ravenna-Italy, Osijek-Croatia
The IMPULSE project introduces a practical methodology and Mostar-Bosnia & Herzegovina. Through the pilot
accompanied with user-friendly computational tools to applications the following major conclusions were drawn:
generate realistic and affordable energy renovation plans
for public buildings. The methodology is consisted of the • The introduced protocols and platforms facilitate
following steps and tools: significantly energy renovation planning for large public-
buildings’ stocks at local level.
• Classification of building stock: A practical guide has
been developed for clustering the initial building stock • Detailed energy audits are triggered, thus formulating a
into representative Typologies, based on classification reliable energy baseline for public buildings which is a
criteria affecting energy performance such as prerequisite for attracting innovative financing schemes.
construction year, building use, construction type,
systems, etc. From each Typology a representative • Bundling of buildings and of intervention scenarios
building can be selected as the “Ambassador” building increases the bankability of the foreseen projects.
with available technical information for further energy
analysis. • Energy managers and other technicians of public
administrations are trained through a learn-by-doing
• Energy analysis: Based on the assumption that process in planning, implementation and management
similar buildings present the same energy-related of energy upgrading projects of public buildings. l
Key Performance Indicators (KPIs) per sq.m., an
excel-based platform has been developed which For further information please contact:
automatically extrapolates KPIs for various retrofitting Email: gstavr@cres.gr
scenarios from the “Ambassador” buildings to all Web: https://impulse.interreg-med.eu/
buildings of each Typology. The approach presumes
the availability of KPIs for the “Ambassadors” e.g.
obtained by energy simulations. The approach is
very cost-effective, at least for planning purposes,
as it skips time-consuming calculations for each
building separately. The platform estimates also
economic indicators (such as payback period,
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