The 1.2-gigawatt Baltic Power project, being developed by Polish energy giant Orlen and Canada's Northland Power, began supplying electricity to the national grid in July, according to an announcement at the time.
Prime Minister Donald Tusk has described the project as a key element of Poland's energy security and independence.
"In these very uncertain times, having multiple sources of energy that are independent of geopolitical turbulence means a great deal," he said, pointing to Russia's war in Ukraine and the conflict in the Middle East as reminders of the importance of secure domestic energy supplies.
All 76 turbines at the offshore wind farm have now been installed, representatives of the investors said.
The wind farm is scheduled to begin operating at full capacity before the end of the year.
Once fully operational, Baltic Power will have enough capacity to supply electricity to more than 1.5 million households, according to its developers, making it one of Poland's largest renewable energy projects.
Poland has accelerated investment in offshore wind as it seeks to diversify its energy mix, which has traditionally relied heavily on coal, and strengthen its energy independence following Russia's full-scale invasion of Ukraine in 2022.
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