EPA usually presents one Green Chemistry Challenge Award in each award category. For the 2021 nomination package, there are five award categories:

• Focus Area 1: Greener Synthetic Pathways
• Focus Area 2: Greener Reaction Conditions
• Focus Area 3: The Design of Greener Chemicals
• Small Business* (for a technology in any of the three focus areas developed by a small business)
• Academic (for a technology in any of the three focus areas developed by an academic researcher)

*A small business for purposes of this award must have annual sales of less than $96 million, including all domestic and foreign sales by the company, its subsidiaries, and its parent company.

View the 2021 nomination package.