Fossil fuels dominate the global power supply because until very recently electricity from fossil fuels was far cheaper than electricity from renewables. This has dramatically changed within the last decade. In most places in the world power from new renewables is now cheaper than power from new fossil fuels.
— Read on ourworldindata.org/cheap-renewables-growth
This article has a fantastic summary of the progress we have made on improving the economics of renewable energy.
This is the type of information that gives people hope, because it shows the power of exponential growth, when applied in a positive direction.
Climate change science is full of vicious cycles and tipping points that will lead to irreversible damage. But there are also virtuous cycles that are within our control, and positive tipping points.
If we can accelerate our progress towards these tipping points, and hit them sooner, then we can accelerate our ability to achieve Net Zero in time to avoid the vicious cycles, and limit global warming to a level that is compatible with a healthy prosperous, just society. 
