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National Renewable Energy Day

An environmental advocacy day on March 21 promoting awareness of renewable energy sources such as solar, wind, and hydropower to combat fossil fuel overuse and support a sustainable future.

Sunday

March 2027

Last updated February 26, 2026 · by the Holiday Calendar Team

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YEARLY DATEMarch 21

OBSERVED INUnited States

CATEGORYNature

SUBCATEGORYConservation

ORIGIN

Community Origin

FOUNDING ENTITY

Not documented

FIRST OBSERVED

2004

HOW THE HOLIDAY CAME TO BE

The observance began in 2004 as an initiative by environmental advocates to spotlight the need for clean energy and encourage adoption of sustainable energy practices.

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INTRO

Introduction

PHOTO

Get ready to embrace clean and sustainable energy sources on National Renewable Energy Day, which falls on March 21! This day is all about promoting and celebrating the use of renewable energy such as solar, wind, hydro, and geothermal power. It was first observed in 2005 by the American Solar Energy Society as a way to raise awareness about the importance of transitioning to renewable energy sources for a greener future. On this day, we can all take small steps towards reducing our carbon footprint and supporting the growth of renewable energy industries. Let's celebrate Mother Nature and her endless supply of clean energy!

TIMELINE

National Renewable Energy Day Timeline

Discovery of Solar Energy

Scientist Willoughby Smith discovered the photoconductivity of selenium, an essential element in modern solar cells.

First Solar Heater

Inventor Clarence Kemp patented the first solar water heater.

First Solar Power Plant

The first commercial photovoltaic power plant was set up in Saudi Arabia, UAE, and Jordan to power telephone repeaters.

First Wind Farm

The first major wind farm in the U.S. was installed in the San Gorgonio Pass in California.

U.S. Energy Policy Act

The U.S. government introduced the Energy Policy Act, providing extensive incentives for the production of renewable energy.

National Renewable Energy Day Initiated

National Renewable Energy Day was first celebrated, aiming to raise awareness of renewable energy sources.

GET INVOLVED

How to Celebrate National Renewable Energy Day

Go on a renewable energy tour

Visit local renewable energy sites such as wind farms, solar panel installations, or hydroelectric plants. Not only will you learn about renewable energy, but you'll also get to see it in action.

SWITCH

Switch to renewable energy sources

Make a commitment to switch to renewable energy sources for your home or business. This could include installing solar panels, using a geothermal system, or purchasing renewable energy credits from your utility company.

ATTEND

Attend a renewable energy conference

Check out local conferences or events focused on renewable energy. You can learn more about the latest innovations and network with others who are passionate about renewable energy.

HOST

Host a movie night featuring documentaries about renewable energy

Invite friends over for a movie night and watch documentaries about renewable energy. This is a great way to educate and inspire others about the importance of using clean, renewable energy sources.

VOLUNTEER

Volunteer for a local environmental organization

Spend the day volunteering for a local environmental organization that promotes renewable energy. This could include helping with clean-up efforts or participating in outreach events to educate the community about renewable energy.

WHY THIS DAY MATTERS

Why National Renewable Energy Day is Important

It showcases the benefits of renewable energy

From reducing air pollution to creating a more resilient energy system, there are many benefits to using renewable energy. National Renewable Energy Day highlights these advantages and inspires individuals and businesses to make the switch.

It promotes the use of sustainable energy sources

National Renewable Energy Day raises awareness about the importance of transitioning to sustainable energy sources like solar, wind, and geothermal power. This helps reduce our dependence on fossil fuels and minimize our impact on the environment.

It supports the growth of green jobs

By shifting towards renewable energy sources, we create new job opportunities in clean energy industries. National Renewable Energy Day raises awareness about these potential careers and encourages individuals to consider pursuing them.

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