Solar power has begun to transform the world’s energy system

This is basically just not true. Energy is fungible and the grid is demand driven. Every watt of solar displaces a watt of something else. In many places like the US we've basically stopped building nonrenewable energy generation as it's no longer economically competitive. China has to date still built a lot of coal powered generation even as most of the richer world shut theirs for greener sources, since China rightly and justly prioritized bringing a billion people out of severe poverty, but even in China the tides are turning, and we're seeing indications that 2025 could be their peak coal.

Things are getting better.