Energy Agency for Southeast Sweden Energy Efficiency in

Energy Agency for Southeast Sweden Energy Efficiency in buildings in Sweden Riga 20061025, Hans Gulliksson

Energy Agency for Southeast Sweden (since 1999) Main Tasks: • Energy efficiency • Conversion to Renewable Energy Sources (RES)

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 ü Heating ü Electricity Priorities ü High environmental quality (lighting and engines) ü Transportations ü Reliable energy supply ü Cost efficiency ü Regional development with increased employment

Core activities • Renewable energy • Energy efficiency (bio, wind, solar) (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), FP 5, FP 6, Interreg. III and structural funds

Some ongoing EU-projects • RES Market Places - IEE • • • SESAC – Concerto FP 6 SHARE - IEE Waste. Water. Heat - IEE PU/Benefes – IEE Euro. Contract –IEE Interco/PPP – IEE E-tream – IEE MOVE – IEE Bionet – IEE eea, ESME, Impulse - RFO

Total energy use in Sweden 395 TWh/year Industry Transports Residential and services Building etc Electricity for household purposes Energy for heating and hot water Electricity for common purposes Source: STEM

Existing buildings Delivered energy per heated area (k. Wh/m 2, year) New buildings Low-energy houses 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)

Existing buildings Delivered energy per heated area (k. Wh/m 2, year) New buildings Low-energy houses 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)

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

Roof window for airing/natural lighting Solar panel for hot water U-value roof = 0, 08 Bedroom Upper hall Kitchen U-value ground =0, 09 - Concrete carcass gives more even temperature - Well insulated external walls and floors -Hot water accumulator -Waste water heatexchanger Clothes cupboard Store - Design for optimal solar incident radiation/solar control (winter/summer) - Demand-controlled ventialtion - Electricityefficient (A++) domestic appliancies armatur) - Water. . (vattensnål - Electricityefficient luminaire - Individual measurement Kv. Oxtorget, Värnamo

Steel column Plaster Mineral wool Leaf of cavity wall Mineral wool Facade sheet Air Boarding or sheet Separating wall between flats Wall, long side Plaster Mineral wool/ studs Leaf of cavity wall Mineral wool/ studs Facade sheet Air Boarding or sheet Plastic sheeting Wall, vertical corner Window/door Horizontal details

t O xt o rg e O ns Jö nd s La ls kr on a Incl electricity for household purposes ås nd Li Fh us ne w us Sh av e us Fh Sh us av er a ra ge ge Excl electricity for household purposes

• • Electricity for common purposes Household electricity Hot water Heating