• Tesla's German Gigafactory, according to Elon Musk, should begin production in November or December.
• The factory was initially due to open July 1, but it was postponed partly over  environmental concerns.
• Tesla plans to manufacture up to 10,000 Model Y vehicles per week by the end of 2022, Musk said.

Elon Musk said on Saturday that Tesla's future Gigafactory in Germany should start producing electric vehicles by the end of 2021, six months later than initially planned, Bloomberg first reported.

Musk said during the "Giga-Fest" county fair in Berlin that the facility will start producing Tesla's Model Y automobiles in November or December. According to Bloomberg, Musk stated that volume production was "the hard part" and would take longer.

The facility was supposed to start on July 1, but it was postponed due to regulatory issues and environmental concerns that surfaced last year, including concerns about hurting the local lizard species. Local environmental groups also claimed that the Gigafactory would contaminate the water supply in the area.

Tesla has yet to receive final authorisation to begin production at the facility. Germany's Environment Ministry will make a judgement after a public comment on Tesla's Gigafactory closes on October 14.

Musk stated that the Gigafactory would produce between 5,000 and 10,000 automobiles per week by the end of 2022.

"It will take longer to reach volume production than it did to establish the factory," Musk said.

Until Tesla builds a separate plant in Germany, the factory will most likely use Tesla batteries made in China, Musk said.

Musk gave his German team six extra months to start production at the factory in May, according to Automobilwoche, citing company sources. A month before, Tesla had previously stated that production will begin by the end of 2021.

Elon Musk, Tesla's CEO, remarked at the festival that he was "worried" about staffing at the factory, according to Reuters. He continued, "We truly need tremendous talent to come here from all across Europe."