This project receives funding from the Horizon 2020 European Union Research and Innovation Programme under Grant Agreement No. 695169 Questionnaire for preliminary analysis of the building stock Project Title: EmBuild - Empower public authorities to establish a long-term strategy for mobilizing investment in the energy efficient renovation of the building stock Grant Agreement No. 695169 Deliverable No. 3.1 – Questionnaire for preliminary analysis of the building stock Work package leader: eza! NOVEMBER 2016 Ref. Ares(2016)6419751 - 15/11/2016
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This project receives funding from the Horizon
2020 European Union Research and Innovation
Programme under Grant Agreement No. 695169
Questionnaire for preliminary analysis of the building stock
Project Title:
EmBuild - Empower public authorities to establish a long-term strategy for mobilizing investment in
the energy efficient renovation of the building stock
Grant Agreement No. 695169
Deliverable No. 3.1 – Questionnaire for preliminary analysis of the building stock
Work package leader: eza!
NOVEMBER 2016
Ref. Ares(2016)6419751 - 15/11/2016
Empower public authorities to establish a long-term strategy for mobilizing
investment in the energy efficient renovation of the building stock
I M P R I N T
This document is issued by the consortium formed for the implementation of the EmBuild project
under Grant Agreement N° 695169 by the following partners:
GIZ - Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH (Germany)
KSSENA - Energy Agency of Savinjska, Šaleška and Koroška Region (Slovenia)
Eza - Energie- und Umweltzentrum Allgäu gemeinnützige GmbH (Germany)
BPIE - Buildings Performance Institute Europe ASBL (Belgium)
NALAS - Network of Association of Local Authorities of South East Europe (Macedonia)
TUM - Technische Universität München (Germany)
AE3R - AGENTIA PENTRU EFICIENTA ENERGETICASI ENERGII REGENERABILE PLOIESTI-PRAHOVA ASOCIATIE
(Romania)
UB - UNIVERZITET U BEOGRADU (Serbia)
REGEA - REGIONALNA ENERGETSKA AGENCIJA SJEVEROZAPADNE HRVATSKE (Croatia)
EnEfect - DZZD ENEFFECT GRUP (Bulgaria)
Lead Partner for the compilation of this document
Energie- und Umweltzentrum Allgäu eza! Burgstraße 26 D-87435 Kempten (Allgäu)
Authors of this Report
Felix Geyer (eza!), Lidija Stvarnik, Niko Natek, Živa Vovk, Nejc Jurko (all KSSENA), Catalin Csaszar
(AE3R), Dragomir Tzanev, Kamen Simeonov (both EnEffect), Frank Mischler (GIZ), Milica Jovanovic
Popovic (UoB), Marko Vlainic (REGEA), Mariangiola Fabbri (BPIE)
Disclaimer Neither GIZ nor any other consortium member nor the authors will accept any liability at any time for any kind
of damage or loss that might occur to anybody from referring to this document. In addition neither the
European Commission nor the Agencies (or any person acting on their behalf) can be held responsible for the
use made of the information provided in this document.
This project receives funding from the German Federal Ministry for Economic Cooperation and Development
This project receives funding from the Horizon 2020
European Union Research and Innovation Programme
under Grant Agreement No 695169
Empower public authorities to establish a long-term strategy for mobilizing
investment in the energy efficient renovation of the building stock
26 Feuerwehrhaus Unterauerbach Feuerwehrhaus electric energy
27 Friedhof Landsberger Str. Leichenhalle und Gerätehaus electric energy
28 Frundsbergstr. 2 Friseursalon und eine Wohnung oil
29 Homannstr. 4 Kindergarten Frühförderung natural gas
30 Hopitalstiftung Wohn- und Geschäftsanlage natural gas
31 Imhofgasse 1 mit Gefängnisturm Büro und kl. Versammlungsraum natural gas
32 Landsberger Str. 7 Blumenladen electric energy
33 Lautenstr. 7 Verwaltungsgebäude natural gas
34 Memminger Str. 2 Laden und 2 Wohnungen oil
35 Mindelau "Alte Schule" Feuerwehrhaus, Gymnastikraum und 1 Wohnung liquefied gas
36 Mindelau Bürgerhaus Vereinsheim und Feuerwehrhaus wood pellets
37 Mindelburg - Hauptburg Druckerei oil
38 Mindelburg - Gesindehaus Bürogebäude oil
39 Mindelburg - Benefiziatenhaus Bürogebäude oil
40 Mindelmähderweg 17 Betriebleiterwohnung Klärwerk natural gas
41 Musikerheim, Tiergartenstr. 8 Vereinsheim natural gas
42 Peter-Dörfler-Str. 35 Wohngebäde oil
43 Silvesterkirche Uhrenmuseum, Silvestersaal natural gas
44 Sportheim, Mühlweg 7 Vereinsheim oil
45 Steinstr. 20 Soziale Einrichtungen natural gas
46 Tennisheim, Tiergartenstr.2 Vereinsheim natural gas
47 Tiergartenstr. 4 - Altes Wasserwerk Wohngebäde und Technikkeller natural gas
48 Tiergartenstr. 9a Gaststätte
49 Wertstoffhof natural gas
50 WC - Anlagen electric energy
Basic Data Pre refurbishment data
connected to
district heating
wih 2 CHP und
2 boilers NG for
peak load1360m²
natural gas
Empower public authorities to establish a long-term strategy for mobilizing
investment in the energy efficient renovation of the building stock
Metatable Example Pilot Municipality Mindelheim Part 2
The pictures show the example of the Metatable from the Pilot Municipality of Mindelheim. At the present stage of the work with the municipality, there
is no additional information about documentation & costs, financing and post refurbishment data available, so the table is left blank in this section.
Energy
Certificate
Detailed
energy
audit
Building
permit
Estimated
energy savings
for heat in
kWh/p.a.
Estimated
electricity
savings in
kWh/p.a.
Estimated
investment
costs in EUR
Main area of
refurbishment
Year of
refurbishment
Total cost of
refurbishment
in EUR
Financing scheme
(ESCO, own
sources, etc..)
subsidiesown
participation
Simplified
payback period
for investment
other/
comments
Use of Heat (in
Kwh/p.a)
Use of
electricity (in
kWh/p.a.)
Actual energy
savings of Heat
(in kWh/p.a.)
Actual electricity
savings (in
kWh/p.a.)
Documentation & Costs Financing Post refurbishment data
This project receives funding from the Horizon
2020 European Union Research and Innovation
Programme under Grant Agreement No. 695169
Step 2 Analysis of the energy consumption
After the collection of the basic data, an analysis of the energy consumption of the buildings should
follow. The data about energy consumption is usually available at the municipal level. While some
have elaborated data-bases about all buildings energy consumption, some municipalities have
monthly recordings of the meters and others don`t keep track of energy consumption. For the latter,
the annual energy consumption can be identified by the yearly bills that should be available at the
financial department.
For the analysis of the energy consumption of an individual building the following information should
be gathered and be compiled in the second segment of the Metatable:
Heat consumption in kWh per year
Electric energy in kWh per year
With this data about the energy consumption, specific values can be calculated and be compared
with reference values from existing building benchmarks. The specific values of energy consumption
indicate the energetic performance of a building independent from the size of the building. With the
break-down to the consumption per square-meter of conditioned surface area, buildings of different
sizes but of the same use or category can be compared.
To keep the Metatable and the first step of building analysis simple and manageable – also for non-
experts – no climate correction for the heat consumption is performed. This clearly causes
impreciseness in the analysis, but speeds up the process and keeps it manageable for persons that
are not too deep in the field of energy-management.
The specific values of the buildings will now be compared to reference values of buildings of the
same category and use. In each country, there should be certain benchmarks and reference values
from building typologies available that can be the basis for the assessment of the buildings.
Reference values are generated from a monitoring of the energy consumption of existing buildings.
There are different organizations that make surveys to generate benchmarks and reference values.
For Germany typical sources for benchmarks are:
AGES Gesellschaft für Energieplanung und Systemanalyse mbH
AGES-study from 2005; analysis of 25.000 non-residential buildings
Bekanntmachung der Regeln für Energieverbrauchswerte und der Vergleichswerte im
Nichtwohngebäudebestand; federal ministry of economics and energy
European energy award
The benchmarks usually provide an average value and a target value. For the analysis, the target
value should be used.
If there are no reference values for certain building categories available, the legislative framework
can serve as a basis: in most countries quality criteria for new buildings is defined. There the Energy
Class A, or respectively the class for new buildings should be used.
This project receives funding from the Horizon
2020 European Union Research and Innovation
Programme under Grant Agreement No. 695169
In the next step, the deviation of the specific values from the specific values of the existing benchmarks or reference values is calculated. This gives an
impression of the energetic performance of the buildings. They are compared with existing buildings of the same type and use.
To illustrate how this simple comparison with a reference value works, take the example of a school. In Mindelheim, three schools were part of the
preliminary analysis (Number 3, 4 and 5 in the table above). For primary schools in Germany, the reference value for heat is 87 kWh/m2/a and for
electricity its 8 kWh/m2/a (for secondary schools the reference values are 92 kWh/m²a and 6 kWh/m²a). We now simply compare how the current heat
and electricity consumption of the buildings differ from this reference value. As for heat, we see that schools number 3 and 5 use much less than the
reference, while school No4 (Knabenschule or boy’s school) is slightly above the value. For electricity, all three schools consume more than the reference
building, with schools number 3 and 4 even using double the aspired value.
new tiles, improve insulation 96.000 € 20% 25.500 kWh
option: ventilation 20.000 €
2030 - 2040 Kiga Luxenhofer Str. replace heat transfer station 5.000 € 3% 3.150 kWh
new heating circuit pumps 2.400 € 5% 500 kWh
2040-2050 Rathaus deep renovation: walls and roof 745.000 € 60% 90.000 kWh
option: ventilation 50.000 €
total savings 242.730 kWh
savings % 73%
Empower public authorities to establish a long-term strategy for mobilizing
investment in the energy efficient renovation of the building stock
ANNEX: Questionnaire for preliminary analysis
Building:
year of construction: building / technical infrastructure
building type: e.g. administration building, school
energy carrier for heat: oil / natural gas / electric energy …
type of heat supply:
☐ single stoves
☐ constant temp.
boiler
☐ low temp. boiler ☐ condensing boiler
☐ heat pump
☐ CHP
☐ district heating
age: ☐ > 20 years ☐ 10 – 20 years ☐ < 10 years
heating system: radiators, floor heating, ventilation with heating etc.
heating circuit pumps: ☐ unregulated
multi-level
☐ with electronic
control
☐ high-efficient pumps
insulation of heating pipes : ☐ none
with voids
☐ sufficient ☐ good
control and regulation
system:
☐ faulty broken
☐ hard to operate
☐ ok, but no
documentation
(available)
☐ central control
☐ single room control
☐ building control system
heating times adapted to
building use
☐ no ☐ unknown ☐ yes
heating curve adapted to
the standard of the
building:
☐ no ☐ unknown ☐ yes
hydraulic balanced system: ☐ no ☐ unknown ☐ yes
ventilation: with windows, mechanical etc.
Mechanical ventilation:
□ no heat recovery □ no maintenance □ no automatic control
□ heat recovery
< 60% efficiency
□ cleaning or
changing filters
□ simple automatic
control
□ heat recovery
> 60% efficiency
□ periodical professional
maintenance
□ automatic frequency control
Cooling
□ SEER<2.5 □ automatic controled by temperature
□ 2.5<SEER<3.5
□ automatic control by
temperature and
occupancy schedule
□ SEER>3.5
□ automatic control by
temperature – limited range,
occupancy schedule and open
windows
domestic hot water: ☐ none ☐ decentral ☐ central ☐ circulation
Empower public authorities to establish a long-term strategy for mobilizing
investment in the energy efficient renovation of the building stock
exterior walls: type of construction, masonry, concrete, wood…
☐ without insulation ☐ with insulation
windows: ☐ single glazing ☐ twin pane
glazing
☐ heat protection
glas
☐ triple glazing
top floor ceiling / roof: ☐ without insulation ☐ with insulation
cellar ceiling: ☐ without insulation ☐ with insulation
lighting system: ☐ filament lamps ☐ energy saving
lamps
☐ fluorescent lamps
☐ LED
responsible person: ☐ no ☐ yes ☐ expert, energy manager
energy monitoring: ☐ no ☐ yes ☐ monthly
energy passport issued: ☐ no ☐ yes
potential for low- and no-cost
measures: ☐ high potential ☐ fair ☐ low potential
Noticable Problems / reccommendation:
The noticeable problems / recommendation can be written down in free text as the following example:
Check heating parameters
“starting point”: When the building is not used, the room temperature can be reduced. The reduction of the room temperature is the “night setback”. It must be adapted to the use and the standard of the building.
“what`s the problem here? The night setback from 24°C to 14°C is relatively high with 10°K. If the setback ist too high, the re-heating needs more energy than the reduction of the temperature saves.
recommendation: We recommend to reduce he night setback to 6°K as well as the day temperature We suggest a range from 22°C – 16°C
Empower public authorities to establish a long-term strategy for mobilizing
investment in the energy efficient renovation of the building stock