“Which initiatives / organizations / companies – teams / groups of people / individuals are actually working towards impactful climate change solutions?”
Personal changes work to a point. Take for instance solar power in Aus.
“The sudden rise in solar PV installations in Australia since 2018 dramatically propelled the country from being considered a relative laggard to a strong leader by mid-2019. Australia has the highest per capita solar capacity, now at more than 1kW per capita.” €
€ <https://iea-pvps.org/wp-content/uploads/2022/08/PViA-Report-...>
That’s not enough. For humanity on Earth to survive, the Petrol/Oil/Gas Industry cartels must be destroyed and dismantled.
How? by working out who & what are exploiting the energy Industry:
“How regular taxpayers are subsidizing the ultra-wealthy's use of climate-polluting private jets” ¥