A number of apparel firms, including Nike and Levi Strauss & Co, have joined the White House pledge to address climate change and reduce their carbon footprints.

The new signatories to the American Business Act on Climate Pledge brings the total number to 81, demonstrating their support for the conclusion of a climate change agreement in Paris this December.

Denim giant Levi Strauss has pledged to reduce greenhouse gas emissions 25% by 2020 in its office, retail and distribution locations, and by 5% annually per shipped product at its owned and operated manufacturing plants. It is also looking to purchase a minimum of 20% of its energy from renewable sources by 2020, and commit to no forest-based materials from endangered forests entering into its supply chain by 2020.

Sportwear firm Nike has pledged to reach 100% renewable energy in its owned or operated facilities by 2025, and participate in the Better Buildings Challenge, run by the US Department of Energy.

The company also recently launched a challenge with MIT Climate CoLab to find new ideas for engaging industries, designers and consumers in valuing, demanding and adopting low-impact materials.

“We believe there are significant innovation opportunities ahead in this area and we are working to unlock the barriers to developing and scaling a new palette of more sustainable materials,” Nike said.

Wal-Mart has also joined the coalition, pledging to procure 7bn kWh of renewable energy by 2020, to double the number of its on-site solar projects in the US, reduce energy usage by 20% by 2020, establish partnerships with 17 suppliers, cooperatives and service providers on 23m acres of land in the US and Canada, and achieve zero net deforestation in product sourcing by 2020.

The Climate Action Plan, when fully implemented, is expected to cut nearly 6bn tons of carbon pollution through 2030.