The United States is offering to cut greenhouse gas emissions by up to 28 percent by 2025 as part of a global initiative to battle climate change.

The plan isn’t new, but the White House is expected to deliver it to the United Nations in the form of itsIntended Nationally Determined Contribution (INDC) ahead of the United Nations Climate Change Conference in Paris later this year.

U.N.member countries first met in Lima, Peru, this past Decemberto discuss the initial steps of a global climate deal to fight greenhouse gas emissions. One of those steps included agreeing to submit INDCs by March 31 of this year, although most countries aren’t expected to meet that deadline.

Eventually, the INDCs of U.N. member countries will form the foundation for a new global climate agreement drafted at the meeting in November.

In 2014, the U.S. and China met in Beijing and both President Obama and President Xi Jinping pledged to cut emissions over the next decade or so, the Associated Press reports. Obama reached the 28 percent figure and 2025 timeline at that meeting.

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“If the two biggest polluters and the two biggest greenhouse gas polluters can get together, and two biggest economies, then we’re going to be OK moving into Paris, and we should have momentum behind our backs,” EPA Administrator Gina McCarthy said Monday at a luncheon.

According to the Associated Press, the U.S. will implement the cuts by imposing new rules on power plants, creating stricter emissions limits for vehicles and taking aim at methane and HFCs.

As of Tuesday, four other countries have submitted their INDCs to the 2015 agreement.Latvia submitted on behalf of the entire European Union, meaning a total of 31 countries have pledged emission cuts, excluding the United States.

Unofficially China has pledged a 2030 emissions cap, a 2020 coal cap and that it would increase its use of non-fossil fuel energy.

The U.S. will use figures from 2005 to calculate the full scale of the cuts.

Other pledges:

Switzerland: 50 percent reduction in greenhouse gas emissions by 2030 (compared to 1990 levels)European Union Member States:At least 40 percent reduction in greenhouse gas emissions by 2030 (compared to 1990 levels)Norway:At least 40 percent reduction in greenhouse gas emissions by 2030 (compared to 1990 levels)Mexico: 25 percent reduction in greenhouse gas emissions by 2030 (with a conditional increase to 40 percent given a global agreement on carbon)

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The Aprapaho Glacier in Colorado in 1898. (NASA)