These are some things that organized groups of people can (and must) do together. No individual can solve the climate crisis on their own. But together, a well-informed citizenry can.
Our Episcopal Church has made a statement on Climate change.
Another such group is St James church congregation, which owns buildings.
At our recent parish annual meeting the Treasurer announced that one furnace had failed and the (seven) others are at end of life. This appeared to me as an opportunity to replace gas furnaces with heat pumps, and to power these heat pumps with solar panels. The parish also announced that they are investigating a capital fund-raising campaign, which will include a large new building to support our outreach ministries of a food pantry and rummage sale. This building will be another opportunity for heat pumps and solar panels.
One thing we might do is install a charging station for electric vehicles, powered off solar panels. Episcopal News Service, Feb 27, 2023. "The charging station serves as a small revenue generator for the church, which charges $0.15 per kilowatt hour, averaging a $40 profit a month. But ... its real purpose is as a physical representation of the church’s commitment to environmental stewardship."
How big banks can make real progress against climate change, Popular Science, APR 10, 2023. 'The financial sector should be the engine of the transformation.'