Big Sky Energy v. Kazakhstan Big Sky Energy Corporation v. Republic of Kazakhstan (ICSID Case No. ARB/17/22)
United States of America
Indirect shareholding through Canadian subsidiary Big Sky Energy Kazakhstan Ltd. (“Big Sky Canada”) in Kazakhstani oil and gas company Kozhan LLP, which held exploration and development rights to three oil fields in Kazakhstan.
Claims arising out of a series of alleged illegal actions by the Government and its courts, including domestic judicial proceedings through which Big Sky Canada allegedly lost its 100 per cent shareholding in Kozan to the original Kazakhstani shareholders, without being compensated for the dispossession.
Primary: B - Mining and quarrying
6 - Extraction of crude petroleum and natural gas
ICSID (International Centre for Settlement of Investment Disputes)
ICSID (International Centre for Settlement of Investment Disputes)
Cremades, B. M.
Moser, M. J. (replaced)
Alexandrov, S. A.
Tomka, P.
Knieper, R. (replaced)
Decided in favour of State
460.10 mln USD
Data not available
Fair and equitable treatment/Minimum standard of treatment, including denial of justice claims

Most-favoured nation treatment

Indirect expropriation

None - all claims dismissed at the merits stage