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Welcome to the Hackers Against Climate Change Wiki!

"Hackers against Climate Change" is a preliminary name for a variety of people & working groups/action groups that gathered for the first time during the "Hackers against Climate Change" session at the 35th Chaos Communication Congress in Leipzig. A lot of info was compiled in a variety in pads, (also partially archived here). Three local groups organized under the HACC name: Munich, Siegen, and Canarias. There has been HACC related activity at 36C3 (documented on pads). Since COVID19 hit, we've had sessions at DiVOC, about them on

Please join!

Please feel free to create an account, and start contributing to this Wiki, so that we can gather information in an ordered and searchable form! All relevant content is welcome, whether you consider yourself a hacker or not, as long as it's about combatting the end of a lot of life on this planet.


If you tell people about this project/multitude of projects, please remember that you can reach this wiki via or, too.

Communication Channels


HACC Matrix-Group at Start chatting at

For c3sus, see c3sus#Chats


The majority of pads at CCC events has been co-created, and is maintained at

You can also find HedgeDoc-based pads at

Mailing Lists

There is a mailing list for HACC and one for c3sus: Feel free to subscribe and contribute!

Some notes for admins creating a new mailing list.

Social Media (mastodon)

@haccvoc (twitter)

c3sus#Social Media


We have an overview Website located at maintained by HACC Munich.


Upcoming Events

Similar Groups

There are independently founded groups we are in contact with or cooperate with:

Learning and staying informed

Information sources