- Energy Foundation - awards grants in several areas including clean and renewable energy, utilities, and transportation.
- Charles A. and Anne Morrow Lindbergh Foundation - dedicated to furthering a balance between technological advancement and environmental preservation.
- Surdna Foundation - promotes efficient, economically sound, environmentally beneficial, and equitable use of land and natural resources.
- Morris K. Udall Foundation - committed to educating a new generation of Americans to preserve and protect their national heritage through studies in the environment, Native American health and tribal policy, and effective public policy conflict resolution.
- Alaska Conservation Foundation - community foundation for the environment that receives and awards grants throughout the state to protect ecosystems and promote sustainable livelihoods for communities and people.
- Great Lakes Protection Fund - supports collaborative actions to improve the health of the Great Lakes ecosystem.
- Cottonwood Foundation - foundation that gives grants to organizations that work to protect the environment, promote cultural diversity, empower people and encourage volunteerism.
- Jessie Smith Noyes Foundation - committed to protecting and restoring Earth's natural systems and promoting a sustainable society by strengthening individuals, institutions, and communities.
- Rudolf Steiner Foundation - supporting social and environmental change by connecting philanthropists and investors to worthy projects in need of grants or loans.
- Oak Foundation - funding organizations which address issues of global social and environmental concern.
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