It is the largest power generation company in Singapore, accounting for approximately 20% of the nation's electricity supply.

[9] In April 2004, the company began a $50-million (SGD) power plant upgrade, which eventually made it the largest electricity producer in Singapore.

[10][11] In September 2008, a consortium led by Japanese trading company, Marubeni, acquired Senoko Power from Temasek Holdings for $3.65 billion (SGD).

[13] The $1-billion (SGD) repowering project was completed in 2013 and resulted in a 1-million ton reduction in carbon dioxide emissions annually.

[1] Senoko Energy Supply is the company's retail arm that sells electricity and other services to consumers in Singapore.