This global energy supply-demand model combines our supply outlooks for coal, oil, gas, LNG, wind and solar, nuclear and hydro, into a build-up of useful global energy balances in 2022-30. We fear chronic under-supply. This is masked by economic weakness in 2023, rises to 3% shortages in 2025, and 5% shortages in 2030. Numbers can be stress-tested in the model.