Aldoga Solar Farm

The Aldoga Solar Farm is a 380 MW utility‑scale renewable energy project located near Gladstone, Queensland, and developed by Acciona Energía. Initiated in early 2024, the US$320 million project was completed seven months ahead of schedule in April 2025 and has already begun exporting power to Australia’s National Electricity Market as part of its commissioning phase. The project forms part of a broader clean energy precinct alongside the Bulli Creek Clean Energy Park, which is planned to reach 2 GW of total capacity. To support reliable high‑voltage operation and grid connection at this scale, Insulect supplied critical 275 kV substation equipment.

Challenge

Connecting a solar project of this size to the transmission network requires highly reliable switching, protection, and measurement equipment. The Aldoga Solar Farm needed infrastructure capable of handling large power flows while meeting strict grid compliance and safety requirements. With an accelerated construction schedule and early power export targets, there was little tolerance for delays, commissioning issues, or equipment underperformance. Protecting assets from overvoltage events and minimising electrical stress during switching were also key considerations for long‑term reliability.

Solution

Insulect delivered a coordinated package of 275 kV high‑voltage equipment tailored to the project’s requirements. This included 275 kV disconnectors to enable safe isolation, a 275 kV dead tank circuit breaker with point‑on‑wave control to manage switching events precisely, capacitive voltage transformers to support accurate measurement and protection, and 275 kV surge arresters to protect critical assets from transient overvoltages. By supplying proven, compatible equipment, Insulect supported smooth integration into the substation design and efficient commissioning.

Benefits

The supplied infrastructure provides dependable high‑voltage switching, accurate voltage measurement, and strong protection against electrical transients. Point‑on‑wave control helps reduce stress on equipment during switching operations, supporting longer asset life and improved system stability. Using high‑quality, purpose‑built components reduced operational risk and helped the project meet its ambitious delivery and commissioning milestones.

Results

With Insulect’s high‑voltage equipment in place, the Aldoga Solar Farm successfully achieved early power export and progressed through commissioning ahead of schedule. The project now contributes clean, utility‑scale generation to the National Electricity Market and supports Queensland’s renewable energy transition. This case study highlights Insulect’s ability to support large, time‑critical renewable projects with reliable infrastructure solutions that perform at scale and enable confident grid connection.