Mercedes-Benz said on Thursday it had signed a power purchase agreement (PPA) with Spain's Iberdrola for 140 megawatts of wind energy from a Baltic Sea wind park as the automaker looks to make production costs more predictable.
Production chief Joerg Burzer told Reuters that Mercedes was focusing on securing wind capacity in northern Germany and installing solar capacity in the south of the country, where it is less blowy.
The Iberdrola deal, in which Mercedes will invest a three-digit million euro figure, means the carmaker now has solar, onshore, and offshore wind PPAs for capacity equivalent to half of its electricity demand in Germany by the middle of the decade, Burzer said in an interview.
PPAs are long-term contracts to buy electricity directly from a generator at a pre-negotiated price, providing producers with guaranteed financing. Big companies, including carmakers, are increasingly signing such deals to make production costs more predictable and cut CO2 emissions.
Iberdrola's website says the Baltic Sea Windanker project will have 300 megawatts of capacity and operate from 2026.
Mercedes aims for 70% of its energy demand from vehicle production to be covered by renewable sources by 2030. It said on Thursday it has reached its target of a 50% reduction in carbon dioxide emissions from 2020 levels by 2030 early, and so is raising that target to 80%.
Burzer said he was confident that battery storage would develop to the point of enabling a consistent renewable power supply, and that hydrogen would play a role in providing baseload energy.
"Of course there are periods where the sun doesn't shine and the wind doesn't blow, but these are not so common in Europe. Hydrogen can secure the remaining part," he said.
"It is the last few percentage points that are the hardest... there is still a lot to do on the technology side," Burzer added.
Renewable energy accounted for 46.9% of German power consumption in 2022, with the rest coming from coal, nuclear, and natural gas. In Europe, the latest available figures from 2021 show around 22% of renewable energy consumption.
Plans to fuel industry via hydrogen in Germany are still in their infancy, with the construction of the first hydrogen pipeline network approved last December.
(Reporting by Victoria Waldersee, Ilona Wissenbach;Editing by Miranda Murray and Alexander Smith)