DETROIT (AP) — DTE Energy announced Thursday that it hopes to reduce its carbon emissions to net zero by 2050, building on its previous pledge to cut emissions in half by 2030 and by 80% in 2040.

The Detroit-based utility said it will remove its Belle River Plant by 2030 and its Monroe Power Plant by 2040. By 2022, the company will replace the St. Clair County coal plant with natural gas, cutting carbon emissions at that facility by 70%.

“Additionally, we will work with policymakers to advocate for focused research on carbon offsets, high-volume storage and carbon capture technologies,” DTE Energy CEO Jerry Norcia said in a statement.

Skiles Boyd, the company’s vice president of environmental management and resources, said it would take technological and legal breakthroughs to achieve net zero emissions. But he said the company made the announcement because “it’s important to try to be a leader in our industry.”

“If we just did it quietly, people wouldn’t know,” Boyd said.

The estimated cost of the plan is unclear.

Nearly 10,000 customers have signed up for DTE’s MiGreenPower, which allows them, for a cost, to source more of their energy from renewables than from traditional sources. The sliding scale is between 17.5% and 100%.

Ford Motor Company, General Motors, the Detroit Zoo and the University of Michigan are among the high-profile clients who participate in the program.