Method for collecting information by a data concentrator from electricity meters (200, 301, 400) in a powerline communication network, implemented by the data concentrator and comprising: - obtaining a distribution of the electricity meters (200, 301, 400) into a plurality of classes, a first class comprising electricity meters (200, 301, 400) for which no information has been collected during a previous implementation of the method, and at least second and third classes wherein the rest of the electricity meters (200, 301, 400) are distributed according to a level of response to information requests transmitted by the data concentrator, the classes following a sequencing as from the second class by decreasing values of said response levels; - establishing a sequencing of the electricity meters (200, 301, 400), in each class, according to an overall risk of collision incurred in the powerline communication network by each electricity meter (200, 301, 400); - forming a list L of a maximum number M of electricity meters addressed in parallel by the data concentrator for collecting information; - sending an information request, for said collection, to each electricity meter in the list L; - for each electricity meter in the list L, on reception of a response to an information request coming from said electricity meter for said collection or on the expiry of a predefined maximum waiting time since the sending of said information request to said electricity meter, removing the electricity meter from the list L and seeking another electricity meter to be addressed in parallel from the remaining electricity meters in the list L; the method being such that the data concentrator seeks to maximise the number of electricity meters in the list L by prioritising the electricity meters (200, 301, 400) according to the sequencing of the classes, and then according to the sequencing of the electricity meters (200, 301, 400) according to the overall risk of collision, and such that the data concentrator adds a new electricity meter to the list L only if a score representing a risk of collision between said new electricity meter and specifically each of the electricity meters present in the list L is below a predefined threshold STH. - obtaining a distribution of the electricity meters (200, 301, 400) into a plurality of classes, a first class comprising electricity meters (200, 301, 400) for which no information has been collected during a previous implementation of the method, and at least second and third classes wherein the rest of the electricity meters (200, 301, 400) are distributed according to a level of response to information requests transmitted by the data concentrator, the classes following a sequencing as from the second class by decreasing values of said response levels; - establishing a sequencing of the electricity meters (200, 301, 400), in each class, according to an overall risk of collision incurred in the powerline communication network by each electricity meter (200, 301, 400); - forming a list L of a maximum number M of electricity meters addressed in parallel by the data concentrator for collecting information; - sending an information request, for said collection, to each electricity meter in the list L; - for each electricity meter in the list L, on reception of a response to an information request coming from said electricity meter for said collection or on the expiry of a predefined maximum waiting time since the sending of said information request to said electricity meter, removing the electricity meter from the list L and seeking another electricity meter to be addressed in parallel from the remaining electricity meters in the list L; the method being such that the data concentrator seeks to maximise the number of electricity meters in the list L by prioritising the electricity meters (200, 301, 400) according to the sequencing of the classes, and then according to the sequencing of the electricity meters (200, 301, 400) according to the overall risk of collision, and such that the data concentrator adds a new electricity meter to the list L only if a score representing a risk of collision between said new electricity meter and specifically each of the electricity meters present in the list L is below a predefined threshold STH.