The General Services Administration is doubling down on its efforts to slash greenhouse gas emissions from federal buildings with recent announcements aimed at both procuring carbon-free energy and testing out new energy-efficient, low-carbon technologies.

With more than 300,000 buildings, the U.S. government is the nation’s largest energy consumer and “a steady customer prepared to make long-term investments,” GSA Administrator Robin Carnahan said.

The General Services Administration announced it will be spending over $2 billion in funds from the Inflation Reduction Act on low-carbon construction materials for repairs and upgrades on more than 150 federal buildings in 39 states, D.C. and Puerto Rico.

Eighteen countries joined the U.S. in signing on to cut greenhouse gas emissions from their national government operations to net zero by 2050 at COP27.

The Biden administration is looking to boost energy service performance contracts for federal buildings after a decline in their use during the Trump years.

The U.S. government issued a request for information in its first step toward ensuring all its power consumption will be from carbon-free resources by 2030.