Cilacap Phase III Project Overview
Location
The Cilacap Phase III project is located in Cilacap City, Central Java Province, on the island of Java, Indonesia, facing the Indian Ocean to the south. It is arranged in a triangular formation with the existing Phase I and Phase II units.
Construction Scale
This phase involves the installation of one domestically produced 1,000 MW ultra-supercritical coal-fired power unit, along with a flue gas desulfurization (FGD) system.
Construction Objectives
Guided by the principles of "cost-effectiveness, system simplicity, reduced redundancy, safety and reliability, high efficiency and environmental protection, and people-oriented design," the project emphasizes economic feasibility, rationality, and technological advancement. It aims to minimize resource consumption and build a highly efficient, water-saving power plant that maximizes comprehensive benefits over its entire lifecycle.
Project Significance
The successful implementation of this project has significantly advanced the export of China's full industrial chain capabilities in power engineering, including technology, complete equipment supply, installation, and management expertise.
Excellence in Refined Design
China's 1,000 MW ultra-supercritical units have evolved over a decade, achieving world-class technical performance, cost efficiency, and operational reliability on par with advanced Western standards.
Southwest Electric Power Design Institute (SWEPDI) pioneered the "1,000 MW Ultra-Supercritical Single-Reheat High-Efficiency Technology Solution", integrating complete host equipment selection, auxiliary system configuration, optimized plant layout, and advanced material/process applications. By embedding refined design philosophy into system optimization, cost control, and safety/environmental measures, SWEPDI ensures meticulous attention to every detail throughout the plant's lifecycle.
Turbine Generator: The project adopts China’s latest third-generation hydrogen-cooled turbo generator, with a 0.85 power factor and 1,176 MVA rated capacity—making it the world’s most advanced and largest-capacity coal-fired turbo generator.
Customized Design: The team tailored optimized foundation and main powerhouse layouts, while architectural designs respect Indonesian culture and local aesthetics.
Cost Efficiency
Land Savings: The compact layout utilizes the reserved northern plot of Cilacap Phase II, forming a triangular arrangement with Phases I and II.
Construction Savings:
Shared water intake with Phase I for streamlined piping.
Expanded Phase II’s 500 kV substation, leveraging existing grid connections (Bali-Java network) without new transmission lines.
Investment Savings:
Open coal conveyor system reduces costs.
Reused Phase II’s marine/land/air transport infrastructure for coal, oil, ash, chemicals, and heavy equipment.
Safety
Seismic Resilience: Java’s high seismic risk demanded rigorous site studies. The design incorporates optimized ground motion parameters for earthquake resistance.
Foundation Stability: The coastal swamp required 50-meter-long prestressed high-strength concrete piles to anchor critical structures.
Structural Support:
Steel-based seismic systems with rigid + braced frames (lateral) and hinged + braced frames (longitudinal).
Ash Pond Flood Protection: Designed to exceed 100-year high-tide levels, ensuring resistance to waves and storm surges.
Environmental Protection
Strict compliance with Indonesian emission standards for flue gas, wastewater, and noise.
Zero wastewater discharge: Treated water is fully recycled.
On-Site Services
With deep EPC expertise, SWEPDI segmented construction into:
Underground/above-ground civil works
Mechanical & electrical procurement/installation
Commissioning support
Dedicated field engineers were dispatched at each phase to ensure seamless coordination among stakeholders.
Legacy & Impact
"Build a plant, leave a legacy, forge lasting friendships."
The trust of the owner, collaboration among partners, and smiles of local communities stand as the highest accolades. Today, this cutting-edge 1,000 MW plant rises as a beacon of China’s BRI-driven design prowess, delivering stable power to Java and fueling sustainable socio-economic growth.
