Communities at the intersection of climate and technology. Discover startups, investors, and professionals working on clean energy, carbon reduction, climate entrepreneurship, and sustainable solutions. This page focuses on communities hosted on Discourse, so you can compare their size, features, reviews, and access requirements in one place.
Carbon Brief Community are among the most popular climate tech discourse forums in the Hive Index directory of communities, based on visitor interest on Hive Index. This is not a universal quality score. You can also compare listings by review scores, member counts, and listing age on Hive Index.
All 1 listings in the Hive Index directory of communities are marked as free to join. Popular examples include Carbon Brief Community. Access rules can still change on the community side.
Forum is the most common feature (100% of listings).
Hive Index lists 1 climate tech discourse forums in the Hive Index directory of communities. We only have a handful of listings so far, so treat these numbers as directional.
Browse listings in the Hive Index directory of communities, open a community that fits your needs, and follow its join link to Discourse. Some communities may require an application or paid membership, which is shown on the listing when known.
Listings are submitted by community builders and researchers, reviewed for topic relevance, and updated with platform, feature, member, review, and traffic data where available. Member counts are approximate. Popular reflects visitor interest in the Hive Index directory of communities, with richer profiles breaking ties. Ratings, Largest, and Newest use review scores, reported member counts, and listing age instead. These listings in the Hive Index directory of communities were last updated 5/6/2026.
