The Department of Energy has told employees to avoid using certain words including "climate change," "green," and "sustainable," according to an internal email sent to staff and obtained by NPR.

The details of the email were first reported by Politico . It was sent to employees of the Energy Department's Office of Energy Efficiency and Renewable Energy, which is the largest federal funder of clean energy technology. The office supports research about how to build homes and cars more efficiently, and helps fund research about renewable energy, including solar and wind power, hydrogen fuel cell technology and geothermal energy. It had a budget of $3.46 billion in fiscal year 2023 .

The Energy Department denies that its employees were told to avoid using specific terms. "There is no

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