Contact Us

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Sustainable Energy for All Initiative

United Nations
Vienna International Centre
P.O. Box 500 F-162
A- 1400

Tel: +43 (0)1 2606083403
Please note that our Vienna office will be closed on the following UN and public holidays


25 December, Christmas Day
    (Vienna and New York offices closed)
26 December, St. Stephen’s Day


1 January, New Year’s Day
3 April, Good Friday
6 April, Easter Monday
1 May, May Day
25 May, Whit Monday
17 July, Eid al-Fitr
23 September, Eid al-Adha
26 October, Austrian National Day
25 December, Christmas Day
28 December, in lieu of 26 December
    (St. Stephen’s Day)