The paper presents the concept of using petroleum coke to produce methanol in the process of co-gasification with steam coal. Petroleum coke is a final carbon-rich solid material that is derived from oil refining in delayed coking installations and can be used either for energy generation purposes or after calcination in electrode industry. Existing technologies and installations for converting petroleum coke into synthesis gas for the production of methanol and electricity have been discussed. Opportunities for the development of the methanol market in Poland for the production of chemicals, fuel, fuel additives, olefins and gasoline were presented. The concept of the installation for the production of methanol from petroleum coke was evaluated and the calculation model was built enabling the input-output parameters of such an installation to be obtained. Using the obtained results, an economic model has been built and the economic feasibility was assessed in order to determine the profitability of methanol production from petroleum coke for different coal supply scenarios as well as the costs of CO2 emissions. It has been found that the profitability of the methanol production through petroleum coke gasification is only possible with free CO2 emission allowances and a reduction in investment costs compared to current forecasts. However, it still does not guarantee the success of the project in the case of significant falls in methanol prices below those forecasted in price variability scenarios.