(EnergyAsia, May 20, Tuesday) — US-based AEI said Singapore’s GIC Special Investments (GICSI) Pte Ltd has paid US$400 million for a 11% stake in the company. GICSI is the private equity investment arm of state GIC, a global investment management company established in 1981 to manage Singapore’s foreign reserves. AEI said a nominee of GICSI…