The expansion of the Trans Mountain pipeline was 25% complete in the first quarter of this year, but more than half of the estimated capital cost of the expansion has been spent, according to Trans Mountain’s first quarter financials.

“As of March 31, 2021, construction is approximately 25% complete, with $7.1 billion in capital spending incurred since the inception of the project,” Trans Mountain Corporation says in its first quarter management report.

The total cost of the pipeline twinning project was last estimated at $12.6 billion, so more than half of the estimated capital budget has been spent to date to get the project one-quarter of the way built.

In 2017, the project was estimated to cost $7.4 billion. It was revised to $12.6 billion in 2020, after the federal government bought the existing pipeline from Kinder Morgan (NYSE:KMI) and assumed responsibility for completing the twinning project, which had been troubled by endless legal, political and regulatory delays.

Spending to date has been on “upfront costs of permitting, regulatory processes, legal, materials such as pipe, valves, buildings, motors, and financing costs in addition to direct construction related activities,” the company says in its first quarter report.

The company spent $997 million in the first quarter of this year on the expansion project, which is now in its peak construction phase.

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