The logo of Austrian specialty steel maker Voestalpine is seen on top of its headquarters in Linz, Austria September 7, 2016. Picture taken September 7, 2016. REUTERS/Heinz-Peter Bader

VIENNA (Reuters) - Steelmaker Voestalpine VOES.VI said on Wednesday the final cost of its direct reduction plant in the United States amounted to $1.012 billion (929 million euros), more than the $990 million estimated at the beginning of the year.

The Austrian group in 2013 announced plans to invest 550 million euros in the state-of-the-art plant in Corpus Christi, Texas, its largest foreign investment so far.

In January, it said the cost of the plant would rise to about $990 million. That prompted Austria’s Financial Market Authority (FMA) to investigate whether Voestalpine had complied with a requirement to immediately publish information relevant to its share price. The FMA found no wrongdoing.

“The increase in investment expenditure is essentially due to delays caused by a longer period of critical weather conditions during the first phase of the project, significant cost inflation as a result of the unforeseen construction boom in the Corpus Christi area starting 2014, as well as additional investments, technical optimization, and environmental measures,” the company said in a statement.