Singapore: Second Largest Solar Cooling Installation Worldwide

The solar thermal collector field with 3,900 m2 at the United World College (UWC) in Singapore powers a 1,500 kW cooling unit, which is based on a single-effect lithium bromide absorption chiller. The United World Colleges are international schools with an emphasis on social and environmental issues. With 2,900 pupils, Singapore's UWC is the largest of the 13 colleges spread around the world. The Austrian company S.O.L.I.D. commissioned the solar cooling plant in August 2011, back then as the largest cooling installation worldwide. S.O.L.I.D. has teamed up with the Österreichische Kontrollbank and the Österreichische Raiffeisenbank, almost turning the project into an exclusively Austrian effort despite its Singapore location.
Photo: S.O.L.I.D.

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Name of Project / installation site

United World College (UWC), Singapore



Start of operations

August 2011


Solar Cooling

Gross collector field size

2.73 MWth / 3,900 m²

Storage size

Hot water storage: 60 m³

Domestic hot water storage: 6.5 m³

Number of users

Approx. 2,900 students

Predicted specific solar yield per year


Predicted solar cooling share



United World College (UWC)

Planning/Construction and Operation

Solid Asia Energy Services Pte.Ltd, Singapore

Collector manufacturer

Asgard Solarkollektoren (formerly Ökotech), Austria


More information


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