PT Elnusa Tbk. was founded as PT Electronika Nusantara based on Indonesia Corporate Establishment Act No.18, dated 25th January 1969, Indonesia Corporate Capital Change No.10, dated 13th February 1969 as witnessed by notary Tan Thong Kie. Such establishment data was recorded at Republic of Indonesia Hall of Record No.35, Annex No.58, dated 2nd May 1969. PT Elnusa named by 9th September 1969.

Elnusa started as a state-owned oil and gas PT Pertamina’s operations support services company. Its services include maintenance and reparation of Pertamina’s vessel shipboard electronic communications equipment, navigational equipment and radar system. Oil tankers owned by other companies working under contract with Indonesia state-owned oil and gas companies were also part of Elnusa clientele.

PT Elnusa Tbk. was officially listed at the Indonesia Stock Exchange (Stock Code: ELSA) on 6th February 2008. With its own brand of professionalism, transparency, management and clean & trustworthy business ethics, PT Elnusa Tbk. was ready then to take on challenges, nationally, regionally and internationally. Today, PT Elnusa Tbk. is an Energy Services Company, which not only serves oil & gas industry, but also the other energy sectors.

1969 The Company was established as PT Electronika Nusantara based on the Deed of Establishment No. 18 dated 25 January 1969.
1971-1974 The Company started to explore the possibilities of doing business in the oil & gas industry by forming the Seismic Data Processing Division. The Company also launched the Scientific Data Center,  Integrated  Oil Communication System (IOCS), seismic data acquisition, reservoir stimulation services, and oil services especially refinery process optimization.
1980-1987 The Company continued its business expansion to the oil & gas data storage and management, oilfield services, and domestic fuel distribution, through the establishment of PT Sigma Cipta Utama, PT Elnusa Workover Hydraulic, and PT  Elnusa  Petrofin.  In  1984  the  Company’s  name
PT  Electronika Nusantara changed to PT Elnusa.
2003-2005 The Company reinforced its position in the oil & gas industry by establishing PT Elnusa  Drilling  Services, engaged in integrated drilling services,  and acquired PT Purna Bina Nusa, subsequently named as PT Elnusa Fabrikasi Konstruksi based in Batam.
2007 In order to be more focused as an integrated upstream oil & gas services provider, the Company merged four of its subsidiaries, namely: PT Elnusa Geosains, PT Elnusa Drilling Services, PT Sinar Riau Drillindo, and PT Elnusa Workover Services.
2009-2010 The Company divested its shares in various companies that were not directly related to the Company’s core business to strengthen its footing in the oil & gas services industry.
2011-2012 The  Company carried out the turnaround program to improve its overall performance as regards business aspect, operations, and corporate culture implementation.
2013 The Company proclaimed this year to be the “Year of Human Resources” and established PT Elnusa Trans Samudera (ETSA). The Company also redefined its vision & mission and reinforced its position as an Energy Services provider followed by a change of the Company’s logo.
2014 The Company strengthened operational level, organization, and internal control functions as well as evaluated and redefined all product/ services of the Company. In addition, the Company established PT Elnusa Geosains Indonesia and PT Elnusa Oilfield Services as part of a company’s risk mitigation