A method for regulating an installation (10, 110, 210) for the geological sequestration of carbon dioxide, said installation comprising: - a structure, preferentially a floating structure; - a liquid carbon dioxide storage compartment, received in said structure; - an injection device, able to inject carbon dioxide into a submarine geological reservoir, from said storage compartment; - an energy production member (26, 126, 226), able to power said injection device; and - an energy storage member (28, 128, 228), received in said structure, said storage member also being able to power the injection device; the method being characterized in that: - the energy production member supplies a time-variable power, said power supplied being associated with a first and a second defined power threshold, the second threshold being greater than or equal to the first threshold; the power supplied varying between a first weak state, below the first threshold; a second intermediate state, between the first and second thresholds; and a third high state, greater than the second threshold; - when the power supplied is in the first low state, the injection device is powered by the energy storage member (28, 128, 228); and when said power supplied is in the third high state, the injection device is powered by the energy production member (26, 126, 226) and said energy production device powers the storage member (28, 128, 228) in parallel; so as to ensure a continuous injection of carbon dioxide into the submarine geological reservoir from the storage compartment. - a structure, preferentially a floating structure; - a liquid carbon dioxide storage compartment, received in said structure; - an injection device, able to inject carbon dioxide into a submarine geological reservoir, from said storage compartment; - an energy production member (26, 126, 226), able to power said injection device; and - an energy storage member (28, 128, 228), received in said structure, said storage member also being able to power the injection device; the method being characterized in that: - the energy production member supplies a time-variable power, said power supplied being associated with a first and a second defined power threshold, the second threshold being greater than or equal to the first threshold; the power supplied varying between a first weak state, below the first threshold; a second intermediate state, between the first and second thresholds; and a third high state, greater than the second threshold; - when the power supplied is in the first low state, the injection device is powered by the energy storage member (28, 128, 228); and when said power supplied is in the third high state, the injection device is powered by the energy production member (26, 126, 226) and said energy production device powers the storage member (28, 128, 228) in parallel; so as to ensure a continuous injection of carbon dioxide into the submarine geological reservoir from the storage compartment. the method being characterized in that: - the energy production member supplies a time-variable power, said power supplied being associated with a first and a second defined power threshold, the second threshold being greater than or equal to the first threshold; the power supplied varying between a first weak state, below the first threshold; a second intermediate state, between the first and second thresholds; and a third high state, greater than the second threshold; - when the power supplied is in the first low state, the injection device is powered by the energy storage member (28, 128, 228); and when said power supplied is in the third high state, the injection device is powered by the energy production member (26, 126, 226) and said energy production device powers the storage member (28, 128, 228) in parallel; - the energy production member supplies a time-variable power, said power supplied being associated with a first and a second defined power threshold, the second threshold being greater than or equal to the first threshold; the power supplied varying between a first weak state, below the first threshold; a second intermediate state, between the first and second thresholds; and a third high state, greater than the second threshold; - when the power supplied is in the first low state, the injection device is powered by the energy storage member (28, 128, 228); and when said power supplied is in the third high state, the injection device is powered by the energy production member (26, 126, 226) and said energy production device powers the storage member (28, 128, 228) in parallel; so as to ensure a continuous injection of carbon dioxide into the submarine geological reservoir from the storage compartment.