Solar Thermal in Sweden Visiting group from Bulgaria Stockholm Arne Andersson Swedish Energy Agency

What will be spoken Possibilities in Sweden The swedish situation Environmental advantages Technics Examples Economy

Main issues for solar thermal What kind of energy is replaced by solar thermal ? What kind of environmental benefit is connected Is there any reduction on green-house- gases ?

Who gains the most ? Solar heating is more interesting for the endconsumer than the energydelivering company It is more a way of saving energy than producing energy The value for the endconsumer is 1.00 Sek/ kWh or more, but for the energy producer it is about 0.30 Sek /kWh.

Sweden  9 million inhabitants  Large bioenergy sources  ~ sqm of solar collectors, i.e. ~ 25 sqm per 1000 capita  Small but developing solar energy association …  Small but positive development for solar heating ….

Main applications  Pioneering solar district heating  Pioneering roof module collectors on multifamily buildings  Majority of solar systems are combined with wood chips, briquettes and pellet boilers …  Preheating hot water in single and multifamily buildings...

Market introduction Misc. R&D programs Misc. investment subsidies Quality label introduced in 1990 Performance based investment subsidy from … ( at present until 2010), Initiated and evealuated by Energimyn- digheten, Boverket and Svensk solenergi Adoption of Solar Keymark

Solar district heating Kungälv sqm ~ 7 MWth

Swedish technology !?  There are ~120 systems with >500 sqm solar collectors in Europe... (>350 kW thermal power)  >20% are in Sweden.. !  ~40% of the collector area with modules developed in Sweden.. !  ~60% of the collector area with Swedish absorbers.. !

Solar heating plants > 350 kW th > kW th

Systems Combisystems for single family houses – Boiler – liter tank + 10 sqm collectors Solar hot water for single family houses - 5 sqm colectors liter (Electric heater) Solar hot water and/or combisystems for multifamily buildings sqm per apartment; 100 liter/sqm - 1 sqm per person

Vallda, 150 m², Since 1978

EKSTA/Onsala ~ 220 m²

Lunden Onsala 1995

Mounted directly on the roof trusses

Gårdsten 2000

LESOL AB – 2006/2007 The most installed Collector in Sweden

”Houses without heating system” – Lindås

Solar thermal in Sweden

Solar 3% in relation to use of pellet!

Sweden

Sample in Austria Spa

Camping

Solar heat Glazed collectors Flat plate collectors Vacuum tube collectors

Support for installation Subsidies Investment grant 2.50 SEK/ inst. kWh/ Year Only energy verified collectors Investment grant since the year 2000 Will last until under the same terms (as far as we know today) 2.50 SEK~ 0,40 USD-cents or 0.35 Euro-cents Carried out by The National Board of Housing and Planning

Principle of solar thermal system Solar collector Hot water tank with heat exchanger spiral Auxiliary energy Hot water Cold water

Principles for solar thermal system

Solar heating plant principle Forbrugere Solfangerfelt Consumers District heating boiler plant Solar collector field

Solar heating for swimmingpools