What is the Definition of Fossil Fuel and Fossil Fuel-Free

Oil, gas, coal, and other fossil fuels are some of the world’s main energy sources, yet the environmental impact of extracting, burning, and transporting these fuels cannot be ignored. The fossil fuel free movement grew as people saw how using fossil fuels causes climate change and wanted to demonstrate their concern. 

Green Century Funds exclude fossil fuel companies and offer people a way to save for their futures while investing sustainably.  

What is Fossil-Fuel Investments?

Many individuals and institutions have divested from unclean fossil fuel energy over the last decade in an effort to reduce society’s consumption of fossil fuels. How does Green Century Funds invest sustainably? We do not invest in corporations that explore, extract, process, refine, and transmit coal, oil, or gas. Investing sustainably also means excluding companies that burn fossil fuels to make electricity or those that possess carbon reserves. You can invest sustainably by divesting from fossil fuel companies and transition to a clean-energy economy as quickly as possible. Our Fossil Fuel Free guide explains the history of the fossil fuel free movement, how to assess your portfolio, tips for excluding fossil fuel companies and how to invest sustainably. 


An investment strategy that incorporates environmental, social and governance criteria may result in lower or higher returns than an investment strategy that does not include such criteria.

Invest Sustainably with Green Century Funds

Sustainable investing is growing as individuals and institutions choose investments that reflect concerns about the environment and climate change. Green Century Funds, which has been investing sustainably since 1991, excludes fossil fuels, tobacco, defense and other industries we deem as environmentally harmful.  We would enjoy hearing from you and helping you select investments that align with your values.


About Green Century

°Green Century Capital Management, Inc. (Green Century) is the investment advisor to the Green Century Funds (The Funds). The Green Century Funds are one of the first families of fossil fuel free mutual funds in the United States. Green Century Capital Management hosts an award-winning and in-house shareholder advocacy program and is the only mutual fund company in the U.S. wholly owned by environmental and public health nonprofit organizations.

You should carefully consider the Fund’s investment objectives, risks, charges, and expenses before investing. To obtain a Prospectus that contains this and other information about the Funds please click here, email info@greencentury.com, or call 1-800-934-7336. Please read the Prospectus carefully before investing.

Stocks will fluctuate in response to factors that may affect a single company, industry, sector, country, region or the market as a whole and may perform worse than the market. Foreign securities are subject to additional risks such as currency fluctuations, regional economic and political conditions, differences in accounting methods, and other unique risks compared to investing in securities of U.S. issuers. Bonds are subject to a variety of risks including interest rate, credit, and inflation risk.

This information has been prepared from sources believed reliable. The views expressed are as the date of this writing and are those of the Advisor to the Funds.

The Green Century Funds are distributed by UMB Distribution Services, LLC. 235 W Galena Street, Milwaukee, WI 53212. 4/23. UMB and Green Century are unaffiliated.