General Motors (GM) said it has secured the renewable energy it needs to power all of its U.S. facilities by 2025—there is a “but!”

General Motors (GM) announced it had secured all of the renewable energy required to power all its facilities in the U.S. by 2025.

This means GM will be on schedule to reach its most current goal for renewable energy—that it set for itself in late 2017. The automaker had previously intended to run all its U.S. sites on renewable energy by 2030.

“We believe it is critical — to ourselves, to our customers and to the future of the planet — to step up our efforts and reach ambitious targets that move us closer to a more sustainable world,” said Kristen Siemen, the company’s chief sustainability officer. “Securing the renewable energy we need to achieve our goal demonstrates tangible progress in reducing our emissions in all aspects of our business, ultimately moving us closer to our vision of a future with zero emissions.”

Between 2025 and 2030, according to GM, it will be possible to avoid manufacturing an estimated 1 million metric tonnes of carbon emissions thanks to its expedited transition.

Here’s that “but!”

It should be important to note that GM’s plants don’t emit a staggering 98 percent of the company’s emissions.

Instead, they originate from the customers who purchase the company’s automobiles and supply chains.