Google Research team makes available models to help assess impacts needed to decarbonise. The technical details of the model are in this paper. The web UI is available for you to try.
You will need to bring yourself up to speed on energy modelling. See my overview here on Vaclav Smil's work, his work offers a good introduction (although advocates argue he is too pessimistic, his history of energy is a great place to start). But, it shouldn't take long for an interested reader to be able to make reasonable models and assumptions themselves.
From Google team: "we created a tool that allows us to quickly see how different assumptions—wind, solar, coal, nuclear, for example—affect the future cost to generate electricity and the amount of carbon dioxide emitted.
We created a simplified model of the electrical grid, where demand is always fulfilled at least cost. By “least cost,” we mean the cost of constructing and maintaining power plants, and generating electricity (with fuel, if required). For a given set of assumptions, the model determines the amount of generation capacity to build and when to turn on which type of generator. Our model is similar to others proposed in other research, but we’ve simplified the model to make it run fast...
... One interesting conclusion of the paper: if we can find a zero-carbon, 24x7 electricity source that costs about $2200/kW to build, it can displace carbon emission from the electricity grid in less than 27 years. We hope that the tool and the paper help people understand their assumptions about the future of electricity, and stimulate research into climate and energy."
"Anyone —from students to energy policy wonks—can try different assumptions and see how those assumptions will affect the cost and CO2. The web UI is available for you to try: you can explore the how utilities decide to dispatch their generation capacity, then can test different assumptions. Finally, you can compare different assumptions and share them with others."