Following an analysis commissioned by EDF, below is a world ranking of zero direct CO2 emissions power producers (2024, TWh)

Glossary

“CO2-free emissions”, i.e. leveraging nuclear and renewables technologies, as defined by the IPCC Assessment Report N°5, WG III (mitigation), annex III -Technology-specific Cost and Performance Parameters.
“CO2-free emissions (Dispatchable)”: nuclear, hydropower, and geothermal (if available) capacities.
“CO2-free emissions (Non-Dispatchable)”: solar, wind, and other renewable capacities.