Nova Scotia Power filed an Authorization to Overspend application for the L5031 Hubbards to East Chester 69kV transmission line replacement, seeking approval for $1,659,474 in cost overruns above the approved $5,297,584 budget.

M12961 · Nova Scotia Power Inc. - CI C0061550 – L5031 Replacements and Upgrades – Hubbards to East Chester - $6,957,058 (ATO)

AI summary

Nova Scotia Power filed CI C0061550 on July 13, 2026, requesting an Capital Expenditures Authorization to Overspend (ATO) bringing the total project estimate to $6,957,058 for the replacement of deteriorated assets on approximately 78 of 146 structures along the 19.75 km, 1966-vintage L5031 69kV Power Infrastructure transmission line between Hubbards and Robinsons Corner Substations.
The primary cost driver — approximately $1M of the $1,659,474 variance — was the unplanned construction of three bypass line structures after the originally planned mobile substation was redirected to higher-priority sites elsewhere on the system, increasing both materials and contract costs significantly.
Rock-breaking costs exceeded the original $250,000 estimate by approximately $300,000 due to unexpectedly difficult granite ground conditions in the Chester area required to install new wood poles; remaining overruns of ~$350,000 reflect additional contractor, labour, and overtime costs for line restoration and mobile transformer demobilization.
The project is filed as a Class 1 estimate with construction approximately 40% complete; a 5% contingency ($293,680) has been applied to the remaining scope covering approximately 50 structures and 8 km of conductor, with risks identified as further rock-breaking delays and difficult terrain.
The filing notes a related prior CI (C0055696, 2023, $1,357,477) on the same L5031 asset and identifies the line as serving approximately 1,800 customers, underscoring System Reliability as the primary justification for the project.

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What was filed

Documents filed on this day

N-1 CI C0061550 – L5031 Replacements and Upgrades – Hubbards to East Chester - $6,957,058 exhibits