Alliances for Climate Action

Together we will build a net zero carbon future.



What is ACA?

As the climate crisis deepens, we find ourselves in a race against time. We need to build inclusive societies that provide well being for all, powered by renewable energy and sustained by nature. And we need to do this at an unprecedented pace to avoid catastrophic climate impacts. The transition to a decarbonized economy has begun, but it is not happening at the speed and scale needed to keep global average temperatures from rising above 1.5°C—beyond which we will experience increasingly devastating impacts on our economies, livelihoods, health, ecosystems, and physical infrastructure.

To realize the transformation to a zero carbon future, we need everyone - across all walks of life and in every country around the world - to advance climate solutions together.

Alliances for Climate Action (ACA) is a network of national alliances dedicated to driving ambitious climate action, increasing public support for addressing the climate crisis, and engaging national governments to decarbonize faster. These national alliances are unique because they include a diversity of voices representing leaders from nearly every sector of society—state, local, and regional governments; companies and investors; academic and cultural institutions; tribal organizations and faith communities; healthcare institutions, and civil society.

There is no question that national governments are needed to steer the transition to decarbonized economies in their respective countries, but the groups that make up these alliances are equally critical. They provide jobs, drive innovation, and collaborate to develop creative and inclusive solutions to the climate crisis.

Everyone must act and, together, we are stronger.

Where can you find these alliances?


Alianza para la Acción Climática Argentina (ACAA)

Argentina's alliance brings together 20 local and provincial governments, states, companies, banks, universities, farmers and civil society organizations committed to delivering and enhancing their country's climate goals. Together, they represent more than 13 million citizens and over 30% of the nation's economy.


Japan Climate Initiative (JCI)

The Japan Climate Initiative includes more than 478 leaders from companies, banks, local governments,universities, faith institutions, and civil society organizations. All are committed to realizing a decarbonized society in Japan. Together, they represent over 30% of the country's population, emissions and power consumption.



Alianza para la Acción Climática de México (ACA-MX)

From city halls, to companies, banks, universities and civil society, the alliance of over 130 Mexican entities from the three largest metropolitan areas in the country (Mexico City, Guadalajara, and Monterrey) have pledged to take bold climate actions to reduce their own emissions and increase their adaptation to climate change. These actors also pledge to partner with the national government to enhance Mexico's national climate targets for a 1.5°C-aligned future for all Mexicans.

South Africa

Alliances for Climate Action South Africa (ACA SA)

Alliances for Climate Action South Africa includes 25 local governments, investors, and companies across South Africa that have come together to pursue net-zero emissions in their country by 2050.


United States

We Are Still In (WASI)

The U.S. alliance joins more than 3,900 signatories committed to supporting climate action to meet the Paris Agreement. Together, they represent 155 million Americans, across 50 states, and $9.46 trillion in U.S. GDP.

Viet Nam

Viet Nam Coalition for Climate Action (VCCA)

The Viet Nam Coalition for Climate Action brings together over 40 signatories across companies, banks, investors, universities, and civil society organizations committed to delivering Viet Nam's climate goals.

ACA News & Events

ACA in the News

Climate Expert Hopes for Bold Action from Biden

16 November 2020 - NHK WORLD-JAPAN

In Madrid, Two Different US Climate Messages

11 December 2019 - VOA News

A New Hope for US Climate Action

10 December 2019 - Project Syndicate


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