TRIS gives Egat International AAA rating 

TRIS said the rating reflects the company's status as a wholly-owned subsidiary of the Electricity Generating Authority of Thailand (Egat) that invests in power and energy projects abroad. 
TRIS said the rating also reflects the company’s high degree of operational integration with Egat and its important role in supporting Egat’s electricity production. 
The rating also takes into consideration the strong support the company receives from Egat, TRIS said.