Energy Agency for Southeast Sweden

Energy Efficiency in buildings in Sweden

Riga 20061025, Hans Gulliksson

Energy Agency for Southeast Sweden

Main Tasks:• Energy efficiency

• Conversion to Renewable Energy Sources (RES)

(since 1999)

Energy Agency for Southeast Sweden

450 km to Stockholm

240 km to Copenhagen

Energy Agency for Southeast Sweden

Responsible Authority:• SSKL, Södra Smålands Kommuner och

Landsting

Financiers:• Municipalities in the Counties of Kalmar and

Kronoberg• SSKL, Södra Smålands Kommuner och

Landsting• Regional Council for Kalmar County• Swedish Energy Agency

Energy Agency for Southeast Sweden

Field of activities

Heating

Electricity (lighting and engines)

Transportations

Heating

Electricity (lighting and engines)

Transportations

Priorities

High environmental quality

Reliable energy supply

Cost efficiency

Regional development with increased employment

High environmental quality

Reliable energy supply

Cost efficiency

Regional development with increased employment

Core activities

• Renewable energy (bio, wind, solar)

• Energy efficiency (enterprises, housing, premeises)

• Energy Services, Third party financing

• Schools and education

• Transportations

• Energy planning and strategies

Some key-words about ESS

• Large network – public & private

• Regional information centre

• FEDARENE & FSEK

• Some 20 projects in EU IEE (SAVE, Altener, Steer), FP5, FP6, InterregIII and structural funds

Some ongoing EU-projects

• RES Market Places - IEE

• SESAC – Concerto FP6• SHARE - IEE• WasteWaterHeat - IEE• PU/Benefes – IEE• EuroContract –IEE• Interco/PPP – IEE• E-tream – IEE• MOVE – IEE• Bionet – IEE• eea,ESME,Impulse - RFO

Industry Transports

Residential and services

Energy for heating and hot water

Electricity for household purposes

Electricity for common purposes

Building etc

Total energy usein Sweden 395 TWh/year

Source:STEM

Existing buildings

New buildings

Low-energy houses

Del

iver

ed e

ner

gy p

er h

eate

d a

rea

(kW

h/m

2 ,yea

r)

Figure 3. Energy use (delivered energy) for heating and hot water per heated area in multi-dwelling blocks between 1970 and 2002. The graph of existing buildings represents total heated area during the current year and the graph of new buildings shows the energy use when work is finished. Examples of measured values from recently built low-energy houses illustrate the distance to Best Available Technology. (All data adjusted to average weather year)

Figure 2. Energy use (delivered energy) for heating and hot water per heated area in small houses between 1970 and 2002. The graph of existing buildings represents total heated area during the current year and the graph of new buildings shows the energy use when work is finished. Examples of measured values from recently built low-energy houses illustrate the distance to Best Available Technology. (All data adjusted to average weather year)

Del

iver

ed e

ner

gy p

er h

eate

d a

rea

(kW

h/m

2 ,yea

r)

Existing buildings

New buildings

Low-energy houses

Energyefficient buildings – House without heating system - Passivehouse• Strategy:

• Minimizing energy losses = effective energy management

• Measures:• Very well insulated

building envelope• Minimal air leakage• Mechanical

ventilation with very high heat recovery

• Solar energy for hot water

• Waste water recovery

Kv. Oxtorget, Värnamo

Roof window for airing/natural lighting

U-value roof = 0,08

Solar panel for hot water

Upper hall Bedroom

Store

Clothes cupboardKitchen

U-value ground =0,09

- Concrete carcass gives more even temperature- Well insulated external walls and floors

- Design for optimal solar incident radiation/solar control (winter/summer)

- Electricityefficient (A++) domestic appliancies

- Demand-controlled ventialtion

- Water.. (vattensnål armatur)

- Electricityefficient luminaire

- Individual measurement

-Hot water accumulator

-Waste water heat-exchanger

Kv. Oxtorget, Värnamo

Separating wall between flats

Plastic sheeting

Window/door

Horizontal details

Steel columnPlasterMineral woolLeaf of cavity wallMineral woolFacade sheetAirBoarding or sheet

Wall, long sidePlasterMineral wool/ studsLeaf of cavity wallMineral wool/ studsFacade sheetAirBoarding or sheet

Wall, vertical corner

Energy use in dwellings

0

50

100

150

200

En

erg

y n

eed

s (k

Wh

/m2 ,y

ear

)

Excl electricity for household purposes Incl electricity for household purposes

Shus a

vera

ge

Fhus a

vera

ge

Fhus n

ew

Shus n

ew

Lindå

s

Jöns

Ols

Land

skro

na

Oxtorg

et

Energyefficient dwellings

145

3114

15 30

10

9

36 2527

44

151

0

10

20

30

40

50

60

70

80

90

Lindås Landskrona Jöns Ols Oxtorget

Con

sum

ed e

nerg

y (k

Wh/

m2 ,y

ear)

Fastighetsel

Hushållsel

Varmvatten

Uppvärmning

• Electricity for common purposes

• Household electricity

• Hot water• Heating