Concrete pole line delivers power boost to Discovery Coast

Rocla® concrete power poles helped Ergon Energy overcome site difficulties during the construction of a multi-million dollar power upgrade on Queensland’s Discovery Coast, south of Gladstone.

The towns of Agnes Water and 1770 (the site of James Cook’s first Queensland landfall) are the main beneficiaries of the upgrade, which included construction of high voltage lines from Korenan, the primary point of supply, to new substations at Granite Creek and Agnes Water.

Rocla’s Rockhampton poles plant supplied almost 200 spun concrete poles for a 66kV high reliability line linking the new substations. Poles for the 48km line included 170 single-circuit poles and 22 double-circuit poles, all 20 to 26 metres in length and 60 to 80kN strength.

Rocla also supplied 132kV poles for a 1200m stretch of the high voltage line between Korenan and Granite Creek. Because the line route ran through environmentally sensitive areas, Ergon Energy and Electrix, who was engaged by Ergon as design and construct contractor, consulted extensively with landowners and authorities and exceeded statutory requirements to minimise the impact on the community and the environment. Adverse weather experienced during the construction period created even greater challenges in successfully managing these issues.

During construction of the line, slight changes in direction of the line were necessary to avoid sensitive sites. Rocla responded by altering pole details such as angled fittings and by working around the clock to ensure delivery and construction deadlines were met.