Support candidates who have climate change mitigation as part of their top priorities. Local, state, federal, whatever. You will have no greater leverage than through public policy. Until an election cycle occurs, aggressively engage with your representatives or pay an org to do so.
The US military is one of the largest CO2 emitters in the world. No non profit or startup can fix something like that, but public policy can. At the local level, you can form a muni electric coop and buy only renewable energy in bulk. You can change zoning to phase out gas stations, disincentive internal combustion use, and acquire electric buses for mass transit (both cheaper and faster to deploy than light rail). Similar changes can be made at the state level. But these changes are then impactful act scale.
Find a political point of leverage and exert maximum force. I understand the squeamish feeling, but these are not tech problems; these are people problems. The tech is already mostly solved.
The US military is one of the largest CO2 emitters in the world. No non profit or startup can fix something like that, but public policy can. At the local level, you can form a muni electric coop and buy only renewable energy in bulk. You can change zoning to phase out gas stations, disincentive internal combustion use, and acquire electric buses for mass transit (both cheaper and faster to deploy than light rail). Similar changes can be made at the state level. But these changes are then impactful act scale.
Find a political point of leverage and exert maximum force. I understand the squeamish feeling, but these are not tech problems; these are people problems. The tech is already mostly solved.