status quo of buildings: data status and first indicator results julian stengel karlsruhe institute...

Status quo of buildings:Data status and first indicator results

Julian StengelKarlsruhe Institute of Technology (KIT)

23.10.2012 - Brussels

1

Outline

Data status for buildings Clusters of retrofit measures Calculated CONCERTO indicators

(focus on refurbishments) Environmental indicators Economic indicators Eco-environmental indicators

Result tables Refurbished buildings New buildings

Up-scaling to building stock Challenges Summary & outlook

2

Data status for buildings

3

Clusters of retrofit measures

4

Cluster ID

Share of

buildings

Applied building features in case of refurbishments

Thermal insulation of outside

walls

Replacement of

windows

Thermal insulation of roof or

upper slab

Replacement of

heating system

Insulation

Measures aiming at reducing

electricity use

Modifications in the

layout and size

of the flat

Optimized

lighting / daylight system

Mechanical

ventilation with heat

recovery

Thermal insulation

of basement

1 43% 100% 100% 100% 100% - - 13% 2% -

2 5% 100% 100% 100% 79% 92% 100% 13% 8% 13% -

3 8% 11% 5% 5% - 100% 73% - 22% -

4 24% 100% 100% 100% - - 2% 13% 3% 4% 2%

5 5% 100% 91% 100% 78% 96% 22% 30% 22% 39% 100%

6 5% - 4% - - - 11% - - 4% -

7 10% 98% 100% 86% 47% 100% - 4% 16% 12% -

Calculated indicators

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• Enviromental indicators– Final energy demand/consumption

– Primary energy demand/consumption

– Emissions (CO2, CO2-equ. SO2-equ., SO2, NOx, PM10, PM2.5)

• Economic indicators– Investments

– Grants

– Internal interest rate

– Net present value

– Dynamic payback period

• Eco-environmental indicators– Triggered investment per grant provided

– Abatement per grant (Final energy, primary energy, emissions)

– Abatement costs (Final energy, primary energy, emissions)

Environmental indicators - required data

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(A) Floor area(B) Energy flows – demand

(C) Energy flows– consumption

(F) Emission factors(G) Primary energy factorsFinal energy demand/consumption

[RB: 79%, 26%; NB: 73%, 21%]

Emissions[RB: 79%; NB: 56-69 %]

Primary energy demand/consumption [RB: 79% NB: 69%]

Demo object

Reference object(A-G)…

Reduction

Final energy demand/consumption [RB: 77%, 19%; NB: 67%, 21% ]

Emissions [RB: 77%; NB: 54-65 %])

Primary energy demand/consumption [RB: 77%; NB: 66%]

Final energy [RB: 78%, 41%; NB: 69%]

Emissions [RB: 78%; NB: 61-67%]

Primary energy [RB: 78%; NB: 67%]

RB: Refurbished Buildings, NB: New Buildings

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Environmental indicators – first results

7

no im

prov

emen

t50%

impro

vement

80% improvement


8

demand = consu

mption

demand = consumption/2

demand = 2*consumption


9


10


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Refurbished

buildings

Average reduction of total primary energy demand for space heating

Average reduction of CO2 emissions for space heating Number of buildings

Residential Municip

al Tertiary

Residential Municip

al Tertiary

Residential Municip

al Tertiary <180m² >=180m² <180m² >=180m² <180m² >=180m²

Austria - 69% 61% 81% - 75% 59% 80% - 5 5 19

Germany 81% 50% - - 80% 41% - - 1 21 - -

Ireland 62% 56% 57% 48% 63% 57% 57% 47% 258 96 4 7

Switzerland - 23% 12% 44% - 70% 66% 44% - 1 1 3

United Kindom - 44% - - - 46% - - - 1 - -

Environmental indicators – transparency

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Indicator metadataName Total primary energy demand reductionUnit kWh/(m² a)Value 65.3M1 – Floor area type Total gross floor area (external)M2 - Energy flow type Energy demand

M3 – Application areas Before: Electricity for space heating, Light oil for space heating - After: Electricity for space heating, Light oil for space heating

M5 – Emissions and renewable energy carriers considered

Solar, wind and geothermal final energy demand/consumption are excluded; in the up-stream chain each renewable energy carrier is included

M6 - System boundaries Building and energy carrier supply chainM7 - Electricity & district heating & cooling mix Before: National electricity mix. - After: National electricity mix. M8 – Reference object Building before refurbishment

Building metadataCountry GermanyCity/Municipality HannoverBuilding status Refurbished buildingBuilding name NA, HannoverCompletion date of building 01.06.1965Building type ResidentialHorizontal building Surfaces 1302 m² total gross floor area (external), 1106 m² total heated net room area (internal)

Applied energy servicesbefore: (1) boiler using Light oil for space heating, domestic hot water - after: (1) boiler using Light oil for space heating, domestic hot water

Applied building featuresbefore: other 1 (energy saving measures), after: thermal insulation of outside walls, thermal insulation of roof or upper slab, replacement of windows

Economic indicators – required data

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(D) Investment

(G) Energy prices

Internal interest rate

Reference object (A-G)…

Investment [RB: 66%; NB: 23%]

Grants[RB: 66%; NB: 24%]

(E) Grants

Net present value [RB: 64%; NB: 3%]

Dynamic payback period [RB: 51%; NB: 2%]

Final energydemand/consumption

(A) Floor area

Demo object

Investment [RB: NA; NB: 10%]

Grants[RB: NA; NB: NA]

Economic indicators – first results

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(invoiced; incl. VAT)


15


16


17

Eco-environmental indicators – required data

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Abatement per grant

Internal interest rate

Net present value

Dynamic payback period

(E) Grants(D) Investment Reduction

Final energy demand/consumption

Emissions

Primary energy demand/consumptionTriggered investment per grant [RB: 65%; NB: 9%]

Final energy [RB: 63%; NB: 21%]

Emissions [RB: 63%; NB: 19-21%]


Abatement costs

Final energy [RB: 64%; NB: 3%]

Emissions [RB: 58-63%; NB: 2-3%]


Eco-environmental indicators – first results

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Eco-environmental indicators – transparency

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Indicator metadataName Mitigation costs of emissions (economy)Unit €/tValue -69M2 - Energy flow type Energy demand

M3 – Application areas Before: Light oil for space heating [0,11 €/kWh], Electricity for space heating [0,22 €/kWh] - After: Light oil for space heating [0,11 €/kWh], Electricity for space heating [0,22 €/kWh]

M5 – Emissions and renewable energy carriers considered Direct & indirect: CO2

M6 – System boundaries Energy: Building and energy carrier supply chainM7 – Electricity & district heating & cooling mix Before: National electricity mix. - After: National electricity mix.

M8 – Reference object Building before refurbishment

M10 – Investments and grants considered Before: No investments considered. No grants are considered. - After: Investments: Full costs for measures - Price level: . Is invoiced. Incl. VAT. No grants are considered.

M11 – Energy carrier prices and external costs

Before: Energy prices for houeseholds incl. VAT and other taxes. - After: Energy prices for houeseholds incl. VAT and other taxes.

M12 – Economic key parameters Interest rate: 5%, planning horizon: 20 yearsM13 – Costs and revenues considered Before: requirement-related costs - After: capital-related costs, requirement-related costs

Building metadataCountry IrelandCity/Municipality North TipperaryBuilding status Refurbished buildingBuilding name Refurbished building 122Completion date of building Unknown

Building type ResidentialHorizontal building Surfaces 290,08 m² total gross floor area (external), 259 m² total heated net room area (internal)

Applied energy services before: (1) boiler using Light oil for space heating, domestic hot water(2) stove using Other 1 for space heating - after: (1) boiler using Light oil for space heating, domestic hot water(2) stove using Other 1 for space heating

Applied building featuresbefore: other 1 (energy saving measures), after: thermal insulation of outside walls, thermal insulation of roof or upper slab, replacement of windows, other 1 (energy saving measures), thermal insulation of outside walls, thermal insulation of roof or upper slab, replacement of windows

Residential buildings <180 m² >=180 m²

Non-residential buildings Municipal Tertiary (non municipal)

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Result tables – refurbished buildings

1excl. wind, solar, geothermal; 2incl. biomass; 3incl. capital-related cost, energy cost*, grants; *applies only to space heating.

1excl. wind, solar, geothermal; 2incl. biomass; 3incl. capital-related cost, energy cost*, grants; *applies only to space heating; #all >180 m²

Residential buildings <180 m² >=180 m²

Non-residential buildings Municipal Tertiary (non municipal)

26

Result tables – new buildings

1excl. wind, solar, geothermal; 2incl. biomass; 3incl. capital-related cost, energy cost*, grants; *applies only to space heating.

Up-scaling to building stock

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- Energy price increase- RES share increase

Energy costNational trends until 2050

CO2-emissions

CONCERTOdata

CO2 abatement cost

National data:-building stock-residential energy consumption

General data

Investment

Primary energy consumption

- Refurbishment rate- Demolition rate- New construction rate

Scenario-dependent data

Up-scaling - example results

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Challenges

Data quality Inhomogeneous data

Floor areas Energy flows

Decreasing data availability from environmental to economic indicators

Comparability between countries

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Summary & outlook

First results Transparency via meta-information for each value

Building metadata Indicator metadata

CONCERTO provides good basis for indicator representation in indicator-country-matrices for each building-type

These matrices enable up-scaling

Data bottlenecks (Refurbishments & New construction) Investments Energy consumption

Outlook Ongoing quality control for data Ongoing data collection Ongoing indicator calculation & assessment 34

Thank you

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Distribution of EU-floor area

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Challenges - comparability

Floor areas Application areas Final energy demand Investments Indication of data quality

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status quo of buildings: data status and first indicator results julian stengel karlsruhe institute...

Documents

primary energy rb

final energy rb

grant final energy

emissions rb

electricity usemodifications

outlinedata status

light oil

grant providedabatement