"Gas demand is expected to peak ahead of 2040. At the same time, LNG (liquefied natural gas), we see rapid growth," Raciti told an industry conference.
"So there is an important window of opportunity for investments in gas and LNG," he said.
Raciti did not provide any expansion figures.
Mubadala, which also operates gas fields in Indonesia and Thailand, is keen on further investments in southeast Asia, he told Reuters on the sidelines of the conference.
The Pegaga gas field, or Block SK320, which started producing gas in 2022, is the first development in Malaysia for Mubadala Energy, which is fully owned by Abu Dhabi-based state fund Mubadala Investment Company.
Mubadala is the operator of the block with a 55% share while Petronas Carigali holds a 25% interest and Sarawak Shell holds 20%.
Production facilities at Pegaga, which consist of an integrated central processing platform and a wellhead drilling platform, are designed to produce 550 million standard cubic feet per day of gas evacuated through a new subsea pipeline tied into an existing offshore gas pipeline network to be exported from Bintulu LNG terminal.
Mubadala has been present in Indonesia since 2004. In December it announced it had discovered a major deep sea gas reserve in Indonesia's South Andaman Block, which analysts said was the world's second-largest deep water discovery last year.
"We see this as an opportunity to monetise gas with several options, whether its piped gas for domestic or export and LNG," Raciti said.
