I have a plan B too, but it’s not so gentle.
The goal is to become the number one energy producer and stomp out all opposition and competition before it has a chance to grow. There are no laws against cartels and monopolies, so you exploit the hell out of it. You file extremely broad patents to prevent fossil fuels and combustion based motors from ever becoming a thing. You play super dirty, no mercy, no remorse. It’s going to be basically like the East-India Company, but with renewable energy.
You lobby governments to adopt renewable energy and electrical devices you provide. You influence the public opinion on fossil fuels by spreading information about climate change, pollution and negative health effects. If the global energy company becomes big enough, you should make your own private army and conquer all the places where large oil deposits exist, and establish massive natural reserve parks in those areas. Lobby the governments to make other similar areas legally protected from all industrial development for the next 1000 years.
You would become the supervillain billionaire of the 1800s, but you put the whole world on a renewable trajectory.