Daqo Supplies 209 Oil-Immersed Transformers for APP OKI Project in Indonesia

Asia Pulp & Paper (APP), one of the world’s largest integrated pulp and paper manufacturers, launched construction in 2022 of the world’s largest pulp production base on OKI Island, Indonesia. As a flagship project under the Belt and Road Initiative, the facility represents a major milestone in global pulp manufacturing capacity expansion.

The OKI pulp mill spans approximately 178,000 square meters, with an impressive daily pulp production capacity of 19,000 tons. Designed with advanced automation systems, high-efficiency power distribution, and strict environmental compliance standards, the project sets a new benchmark for large-scale pulp production facilities in Southeast Asia.

Daqo Secures Major Transformer Supply Contract

In September 2023, Daqo signed a contract with APP to supply 209 oil-immersed power transformers, with a total contract value of USD 12.93 million. This agreement further strengthened Daqo’s position as a reliable transformer manufacturer for large-scale industrial infrastructure projects.

All transformer units were delivered under CFR (Cost and Freight) terms by June 2024, ensuring timely shipment and logistics coordination. Installation, commissioning, and full operational integration were completed by December 2024, meeting the project’s strict construction schedule.

Oil-Immersed Transformers for Large-Scale Industrial Power Distribution

Daqo Supplies 209 Oil-Immersed Transformers for APP OKI Project in Indonesia

The supplied oil-immersed transformers play a critical role in the OKI pulp mill’s electrical distribution system. Designed for heavy industrial loads, these transformers ensure:

  • Stable voltage transformation across multiple voltage levels

  • High efficiency and low energy loss

  • Reliable continuous operation in high-demand environments

  • Compliance with international safety and performance standards

Their deployment supports stable power transmission across production lines, auxiliary systems, and high-capacity processing equipment.

Supplied Transformer Models and Technical Specifications

Below is a partial list of transformer models delivered for the project:

  • 720 V / 400 V — 0.250 MVA

  • 11 kV / 720 V — 2.5–4.0 MVA

  • 33 kV / 400–720 V — 1.25–4.0 MVA

  • 33 kV / 6.3 kV — 8–20 MVA

Total supply volume: 200+ units

These transformer configurations cover low, medium, and high voltage conversion requirements, ensuring comprehensive support for the pulp mill’s diverse electrical infrastructure.

Supporting Indonesia’s Industrial Infrastructure Development

The successful delivery and commissioning of over 200 oil-immersed transformers demonstrates Daqo’s capability in executing large-scale overseas industrial projects. By contributing to APP’s OKI Island pulp production base, Daqo supports Indonesia’s industrial modernization and global pulp supply chain stability.

This project highlights expertise in:

As global demand for pulp and paper products continues to grow, reliable power distribution systems remain a cornerstone of efficient and sustainable manufacturing operations.

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