A method for producing bio-methanol, comprising: supplying biomass to an anaerobic digester for producing biogas comprising methane and carbon dioxide; supplying the biogas and oxygen sourced from water using renewable and/or nuclear-sourced electricity to a partial oxidation unit to produce non fossil fuel-sourced syngas; supplying the syngas with hydrogen sourced from water using renewable and/or nuclear-sourced electricity to a synthesis unit for producing bio-methanol; during electricity demand below a base threshold: supplying at least a portion of the bio-methanol to storage; and during electricity demand over a base threshold: supplying at least a portion of the bio-methanol to a generator for intermittently producing bio-sourced electricity; supplying distilled water to a water electrolysis unit to produce electrolysis oxygen and electrolysis hydrogen; supplying at least a portion of the electrolysis hydrogen as at least part of the hydrogen used in the synthesis unit; and supplying at least a portion of the electrolysis oxygen as at least part of the oxygen used in the partial oxidation unit; and wherein: during electricity demand over an upper value: powering the water electrolysis unit using electricity obtained from a generator fuelled with a portion of the stored bio-methanol; and during electricity demand below a lower value: powering the water electrolysis unit, and optionally hydrogen and oxygen compressors, using electricity obtained from a source supplied by renewable and/or nuclear energy sources and/or from independent renewable electricity generators. supplying biomass to an anaerobic digester for producing biogas comprising methane and carbon dioxide; supplying the biogas and oxygen sourced from water using renewable and/or nuclear-sourced electricity to a partial oxidation unit to produce non fossil fuel-sourced syngas; supplying the syngas with hydrogen sourced from water using renewable and/or nuclear-sourced electricity to a synthesis unit for producing bio-methanol; during electricity demand below a base threshold: supplying at least a portion of the bio-methanol to storage; and during electricity demand over a base threshold: supplying at least a portion of the bio-methanol to a generator for intermittently producing bio-sourced electricity; supplying distilled water to a water electrolysis unit to produce electrolysis oxygen and electrolysis hydrogen; supplying at least a portion of the electrolysis hydrogen as at least part of the hydrogen used in the synthesis unit; and supplying at least a portion of the electrolysis oxygen as at least part of the oxygen used in the partial oxidation unit; and wherein: during electricity demand over an upper value: powering the water electrolysis unit using electricity obtained from a generator fuelled with a portion of the stored bio-methanol; and during electricity demand over an upper value: powering the water electrolysis unit using electricity obtained from a generator fuelled with a portion of the stored bio-methanol; and during electricity demand below a lower value: powering the water electrolysis unit, and optionally hydrogen and oxygen compressors, using electricity obtained from a source supplied by renewable and/or nuclear energy sources and/or from independent renewable electricity generators.