Electricity Provider
Operating up to 120 MW of generation capacity through advanced CCPP technology, integrated with a 150 kV transmission & distribution system.
Combined Cycler Power Plant (CCPP) Technology
PT Krakatau Chandra Energi (KCE) operates a 120 MW Combined Cycle Power Plant (CCPP) to deliver reliable and efficient energy for industrial customers. The facility is equipped with two Gas Turbine Generators (GTG), two Heat Recovery Steam Generators (HRSG), and one Steam Turbine Generator (STG), forming an optimized multi-stage system that maximizes fuel efficiency and power output.
Electricity generation takes place in two integrated stages. In the Simple Cycle, natural gas is combusted with compressed air to drive gas turbines connected to generators, producing electricity. The hot exhaust gases are then utilized in the Combined Cycle stage, where they generate steam through the HRSG to power a steam turbine and produce additional electricity, significantly improving overall plant efficiency.
To support steam production, the plant uses treated water from the Water Treatment Plant (WTP), which is converted into steam and later condensed and recycled using a seawater-based cooling system. While natural gas remains the primary fuel, KCE is also expanding its renewable energy initiatives, including solar power development, to support a more sustainable energy future for industry.
Power Network Distribution System
PT Krakatau Chandra Energi (KCE) operates a robust transmission and distribution system designed to ensure the reliable and secure delivery of electrical energy. The company’s transmission and distribution network is predominantly implemented as an underground electricity network, which offers higher operational reliability and enhanced safety compared to conventional overhead systems. Approximately 95 percent of KCE’s distribution network is configured using a ring system cable channel, allowing for improved redundancy, load flexibility, and continuity of supply.
The electricity distribution process begins with power generation at each generator operating at 10.5 kilovolts (kV). To facilitate efficient long-distance transmission and system stability, the generated voltage is stepped up to 150 kV and distributed through the main busbar system. From the busbar, electricity is delivered to KCE’s customers at various voltage levels tailored to their specific requirements, including 30 kV, 20 kV, 6 kV, and 400 volts.
KCE is committed to delivering electrical energy that meets applicable industry quality and reliability standards. To maintain voltage stability and power quality across the network, KCE has implemented a comprehensive compensator system. As the largest electricity consumer, PT Krakatau Steel (Persero) Tbk is equipped with compensator systems installed across its production facilities, ensuring stable voltage levels and optimal operational performance.
Interconnection with PT Perusahaan Listrik Negara (PLN)
PT Krakatau Chandra Energi (KCE) was initially designed to operate as an isolated power system, supplying electricity independently to customers within the Krakatau Industrial Estate. However, as industrial activity expanded and new factories were established in the area, overall electricity demand increased significantly. To ensure system reliability and accommodate this growth, KCE’s power generation facilities were subsequently interconnected with the national electricity grid operated by PLN.
The interconnection is established through KCE’s transmission network, which is linked to PLN’s 150 kV transmission system via a High Voltage Overhead Transmission Line (HUTT). This configuration enables coordinated power exchange between the two systems, enhancing supply flexibility and grid stability.
Currently, the contracted electricity supply capacity from PLN is 200 MVA. Since August 2003, this arrangement has been further strengthened through a tripartite agreement to synergize electricity delivery among PLN, PT Krakatau Steel (Persero) Tbk, and KCE. This collaboration was established to mitigate power supply constraints during Peak Load Time (WBP) and to improve overall system resilience. During an emergency, this interconnection network will work hand in hand in the power plant start-up process.
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