You can invest in renewable quite easily by purchasing your power from a company that supplies it. It doesn't even require capital or much risk. Often they also

You can invest in renewable quite easily by purchasing your power from a company that supplies it. It doesn't even require capital or much risk. Often they also provide cheaper power than the big players. The one I use is cheaper, and they also donate money to planting trees, and protecting old growth forests. Secondly you can invest your pension in ethical, and eco companies. Again, they often outperform others (mine has anyway). Thirdly, you can live in a place which does not waste power. Or you can at least do quite a bit to reduce energy usage yourself. Get a bike. You'll live longer, look better, and you'll not kill people with your pollution. Ya! for not being a murderer. Share a cargo bike so you can carry heavy things. All things which normal people not wanting to take on utility scale investments and risks. Look at your outgoing expenses and see how you can select the providers. When millions of people do it, it has a very powerful effect. Convince your city to also purchase renewable power. As an example, in Melbourne they used the purchasing power of their electric trams. They tendered out for a new renewable power plant to provide the power. With many urban people often voting 'Green', this is not a really hard thing to do or get support for. Good luck!