PT PLN Nusantara Power Construction, commonly referred to as PLN NPC, is a subsidiary of PT PLN Nusantara Power that specializes in engineering, procurement, and construction (EPC) services for the electricity sector. Established to support Indonesia’s growing demand for reliable and sustainable energy infrastructure, the company plays a pivotal role in executing strategic national projects, particularly in the development of substations, transmission lines, and power generation facilities. With its headquarters located in South Jakarta, PLN NPC operates under the broader mandate of PT PLN (Persero), Indonesia’s state-owned electricity company, and contributes significantly to the country’s energy transition and electrification goals.

PT Reska Multi Usaha, also known as KAI Services, is a subsidiary of PT Kereta Api Indonesia (Persero) established in 2003. The company's primary goal is to support and implement the policies and programs of PT Kereta Api Indonesia, especially in the railway restaurant business and other related services.
The company operates in three core business areas: On Board Services, Integrated Facility Management, and Commercial Services. On Board Services include sales on trains, train cleaning, and passenger amenities. Integrated Facility Management encompasses security, parking, cleaning services, and outsourcing. Commercial Services include restaurants, general services, cafes, and catering.
The origins of PT Reska Multi Usaha date back to the Dutch colonial era when the government provided railway restaurants to cater to passengers' needs during their journeys. In 1971, during the early days of PT Kereta Api Indonesia, a dedicated unit called RESTORKA was established to manage railway restaurants. Initially, RESTORKA offered simple beverages like "Es Siripit," but it expanded its menu over time, including the famous "Nasi Goreng Parahyangan" when the KA Parahyangan train was launched.

Established since 2001 with the name “PT Rekayasa Konsultan” and change in 2004 to PT Tracon Industri (TRACON) as a subsidiary of PT Rekayasa Industri, a well known Engineering, Procurement & Construction (EPC) company in Indonesia. Tracon focus on industrial plant solution and services, supported by well trained, experienced, commited technical and extraordinary team members. Throughout the years, TRACON has proved its capabilities in serving clients since project development stage, during construction and up to plant services.

PT Medco Power Indonesia was established in 2004 as an Independent Power Producer (IPP) and provider of Operation and Maintenance (O&M) services. Currently, Medco Power owns and operates more than 3,100 MW, spread across 15 locations in Indonesia.
Medco Power, through its subsidiary, PT Medco Ratch Power Riau (MRPR), was appointed as the winner of a tender for the Riau 275 MW CCPP project in Pekanbaru,Riau. The power purchase agreement was signed in April 2017, followed by the issuance of PLN’s Financing Date Declaration in September 2018. Riau CCPP has reached commercial operation in February 2022.
Medco Power is also developing Sumbawa Solar PV project with capacity of 26 MWp. Sumbawa Solar PV is planned to operate commercially starting Q2 2022. Furthermore, Medco Power will develop West and East Bali Solar PV projects with total capacity of 2×25 MWp. In addition, Medco Power has implemented electric vehicles as operational cars in its head office and subsidiaries such as in Riau, Batam and Jepara.

PT Astra International Tbk was established in 1957 in Jakarta as a general trading company under the name Astra International Inc. In 1990, for the purpose of the Company's Initial Public Offering (IPO), the name of the Company changed to PT Astra International Tbk, followed by listing its shares on the Indonesia Stock Exchange under the ticker code ASII. Market capitalization of Astra as at the end of year 2019 was Rp280.3 trillion.
Pursuant to the articles of association, the Company may engage in the following business activities: general trading, industry, mining, transportation, agriculture, construction, services and consultancy. By 2019, Astra has expanded its business by implementing a business model based on synergies and diversification within seven business segments, consisting of: Automotive; Financial Services; Heavy Equipment, Mining, Construction, & Energy; Agribusiness; Infrastructure and Logistics; Information Technology; Property.

PT Alamtri Resources Indonesia Tbk. is a prominent Indonesian public company engaged in the integrated mining and energy sector. Formerly known as PT Adaro Energy Indonesia Tbk., the company underwent a rebranding to reflect its broader strategic direction and commitment to sustainable energy development. Established on August 26, 2004, under the name PT Padang Karunia, the company has grown into one of Indonesia’s leading energy groups, with a diversified portfolio that spans across metallurgical coal mining, mineral processing, mining services, logistics, power generation, water treatment, and renewable energy initiatives.

PT Sarana Multi Infrastruktur (Persero) (PT SMI) is a state-owned enterprise in Indonesia that plays a crucial role in financing and supporting infrastructure development across the country. Established on February 26, 2009, PT SMI operates under the Ministry of Finance and serves as a Special Mission Vehicle (SMV) to accelerate infrastructure projects that contribute to Indonesia’s economic growth and sustainable development.
PT SMI provides various financial solutions, including project financing, advisory services, and project preparation assistance. Its primary focus is on infrastructure sectors such as transportation, energy, water supply, telecommunications, and social infrastructure. By offering innovative and flexible financing schemes, PT SMI helps bridge the gap between government funding and private sector investment, ensuring that critical infrastructure projects can be realized efficiently.

PT Pertamina Training & Consulting (PTC), a subsidiary of PT Pertamina (Persero) under the Finance and Services category, began as a paper company in 1999 under the name PT Patra Tridaya and started operations in 2002 with its first line of business: Training & Consulting. With extensive experience in human resource management and a strong focus on human capital development, we have continued to evolve in line with customer needs by offering services in Event Organizing, Training & Consulting, Manpower Supply, Security Services, and Assessment Center, all aligned with ISO 9001:2015 standards as part of our commitment to deliver top-quality services to our clients, guided by the 6C values: Clean, Confident, Commercial, Competitive, Customer Focus, and Capable.