
Milestones
Milestones we’ve shared on the path to a greener future.
Cleaner air to breathe and cleaner water to drink. Cleaner energy to power our lives and a more livable climate for our children and their children. A greater abundance of open spaces and wildlife. These are among the milestones that our staff, members and supporters have achieved on the path to a greener, healthier future.
Featured Resources


Milestones: America’s streams regain protection

Milestones: A race to protect Mass. rivers is won

Milestones: NJ’s ‘polluters’ playground’ exposed
The Latest

Global solar capacity on cusp of producing enough electricity to power 100 million average US households
Global solar capacity has more than tripled in the last five years, hitting 2 TW for the first time ever.
Renewables on the rise in Arizona: Solar and wind generation grew by 187% over past decade
Interactive dashboard allows users to explore dramatic clean energy growth in Arizona and nation

Renewable energy provides more than 30% of nation’s electricity
Wind and solar energy grew in first 4 months of 2024, while dirty energy sources declined

Energy Conservation & Efficiency
Energy Department announces national definition of a zero emissions building
Guideline will help contractors build quality, energy-efficient buildings for millions of Americans

U.S. surpasses five million solar installations
Residential solar systems make up 97 percent of solar installations in the United States.