First gas from BP’s ground breaking Greater Tortue Ahmeyim (GTA) liquefied natural gas project offshore Senegal and Mauritania has been delayed, with the cost of the development increasing by 15% to about $4.6 billion.

The project was due online in the first half of 2023, but start-up has now slipped into the third quarter, according to Andy Inglis, chief executive of asset partner Kosmos Energy.

“We are seeing cost inflation and supplier delays in the current environment together with some scope growth and, as a result, we are updating our estimates, with first gas now expected in the third quarter of 2023,” he said today.