Sun Day in DC: Solar Curious? Get Solar Serious!

Join us on September 21 for Sun Day in DC, a community event to empower homeowners and renters to make their own power through the sun. Whether you’re solar curious or ready to take the next step, this is your chance to connect with fellow residents and trusted experts and learn about all the economic, health, and social benefits of going solar!

What is Sun Day in DC?

Part of a nation-wide event, Sun Day in DC is a District-wide day of education about the power of clean energy. Get all your questions about solar, batteries and EVs answered by homeowners, renters and building managers who will share their firsthand experiences at up to 80 solar sites throughout the District. Solar Hubs across the city will host vetted installers and and experts to educate DC residents about the installation choices and economic advantages of solar, batteries and EVs even as the federal incentives are winding down.

How It Works

Explore our Sun Day interactive map (coming soon) – Filter homes by roof type, installer, battery backup, EV chargers and other features to plan your visits or learn more from the comfort of your home.

Visit Sun Day solar-powered homes and buildings – Homeowners who have installed solar and renters who participate in solar cooperatives will be available to answer questions and share their journey.

Rest, hydrate and learn at our Sun Day hubs – Selected libraries, community centers, and places of worship, will host trusted solar experts, information booths, sermons and talks.

Chesapeake Climate Action Network
Third Act
District of Columbia
09/21/2025 at 09:00AM

Sun Day

Sun Day is a day of action on September 21, 2025, celebrating solar and wind power, and the movement to leave fossil fuels behind. Solar energy is now the cheapest source of power on the planet – and gives us a chance to actually do something about the climate crisis. But fossil fuel billionaires are doing everything they can to shut it down. We will build, rally, sing, and come together in the communities that we need to get laws changed and work done.

There are Sun Day events nationwide.

Third Act
09/21/2025 at 08:00AM

Keep Your Cool in a Warming World–Build Resilience to Extreme Weather

In the past few years, the District has seen record-breaking extreme weather, higher tides caused by rising sea level, heavy rains and flooding, warmer average temperatures, and a rapidly increasing number of dangerously hot days.

As a prelude to Sun Day, meet with resilience experts from DC’s Department of Energy and Environment to learn more about how climate change is impacting DC and how the District government is supporting residents to keep cool, stay dry, and keep the lights on. Bring your questions and concerns. Take part in the discussion and become part of the solution as we work together for a safer future.

Speakers:

  • Andrea Limauro, Flood Resilience Planner, Natural Resources Administration, DOEE
  • Erin Garnaas-Holmes, Lead Resilience Planner, Urban Sustainability Administration, DOEE

At the Martin Luther King Jr. Library, Conference Room 401E
901 G Street NW, Washington, DC

RSVP

Third Act
District of Columbia
09/20/2025 at 01:00PM

Make Billionaires Pay: Mass March

Trump and the billionaires are setting the world on fire.

They’re dismantling our democracy, attacking immigrants, feeding the war profiteers, and fueling the climate crisis. Our communities face attack after attack– floods and fires fueled by Big Oil, ICE agenda kidnapping our neighbors, congress revoking our healthcare.

Trump and the billionaires are at the heart of it all and we’re fighting back.

On September 20th world leaders will be gathering in New York City for the UN General Assembly and Climate Week. This is a critical moment for us to show the world we are revolting against Trump and the Billionaire Class. Make Billionaires Pay is part of a series of international mobilizations for climate justice happening 9/19–9/21 entitled Draw the Line. Authoritarian regimes are on the rise but people are fighting back. We are uniting across the world to demand a better future for our communities and for all living beings.

We’re calling for non-violent protests across the US and a mass march in New York City. The Make Billionaires Pay march is one inflection point in an ever growing rebellion against fascist billionaires trying to take control of our government and extract as much profit for our communities as possible. We believe these protests need to be happening at an ever increasing rate and that these mass mobilizations should be the starting point for community organizing.

350.org
New York
09/20/2025 at 10:00AM

The Petrostate Tour

The tour will begin with a rally in the park, then visit the shadowy petrostate lobby shops that have made the United States into a petrostate–a country where oil, gas, and coal use every trick in the book to delay the inevitable transition to cheap, clean, abundant solar energy. The Petrostate Tour will visit the five dirtiest tools of the petrostate:

  • American Gas Association
  • Interstate Natural Gas Association of America
  • American Petroleum Institute
  • Venture Global LNG, Inc.
  • The Maritime Administration of the Department of Transportation

Lower Senate Park, 200 New Jersey Ave NW

Following a brief kick-off rally, we will march less than a mile to the first three stops. For stops #4 and #5, we will board a double-decker Sun Bus. We will end with a pizza lunch and an open discussion about how to continue our campaign against the Petrostate.

RSVP

Third Act
District of Columbia
09/19/2025 at 10:30AM

Fusion Power

Subcommittee hearing entitled “Igniting America’s Energy Future: The Promise and Progress of Fusion Power”.

Witnesses:

  • Dr. Stephanie Diem, Assistant Professor, University of Wisconsin-Madison
  • Dr. Will Regan, Co-Founder & President, Pacific Fusion
  • Dr. Troy Carter, Director of Fusion Energy Division, Oak Ridge National Laboratory
  • Dr. Bob Mumgaard, Co-Founder and CEO, Commonwealth Fusion Systems
House Science, Space, and Technology Committee
   Energy Subcommittee
2318 Rayburn

09/18/2025 at 10:00AM

Bipartisan Federal Lands Legislation

On Thursday, September 18, 2025, at 10:00 a.m., in room 1324 Longworth House Office Building, the Committee on Natural Resources, Subcommittee on Federal Lands will hold a legislative hearing on the following bills:

  • H.R. 309 (Rep. Nehls), “National Law Enforcement Officers Remembrance, Support and Community Outreach Act”
  • H. R. 2196 (Rep. Hudson), To provide for an extension of the legislative authority of the National Emergency Medical Services Memorial Foundation to establish a commemorative work in the District of Columbia and its environs.
  • H. R. 4284 (Rep. Leger Fernandez), “Small Cemetery Conveyance Act”
  • H. R. 4386 (Rep. Walberg), To amend the Federal Lands Recreation Enhancement Act to allow two motorcycles to entrance with one America the Beautiful interagency pass.
  • H. R. 4467 (Rep. Thompson of MS), “Vicksburg National Military Park Boundary Modification Act”, to transfer the welcome center to the State of Mississippi and the Friends of Vicksburg National Park
  • H. R. 5131 (Rep. Begich), “Public Lands Military Readiness Act of 2025”.

These bills are bipartisan in nature.

House Natural Resources Committee
   Federal Lands Subcommittee
1324 Longworth

09/18/2025 at 10:00AM

Moneyball for Climate: The 2026 Playbook

Downballot races hold the key to outsized climate impact. Join Climate Cabinet Political Director Jared DeLoof and New Mexico Land Commissioner candidate Juan Sanchez for an inside look at the strategy, data, and opportunities shaping our 2026 Moneyball playbook.

Climate Cabinet
09/17/2025 at 12:00PM