An electrical load grouping device (110; 210; 310; 410) for grouping electrical loads (132A, ..., 134C; 205; 430, 440) arranged at different locations in an electrical load system (100; 200; 300; 400) based on measurements of an electrical parameter at electrical load sensors (120A, 120B; S1, S2, S3, S11, ..., S36), which are arranged such that each of them can measure the electrical parameter of one or more of the electrical loads (132A, ..., 134C; 205; 430, 440), wherein the electrical load grouping device (110; 210; 310; 410) is configured for receiving a changed value of the electrical parameter from one or more of the electrical load sensors (120A, 120B; S1, S2, S3, S11, ..., S36) in reaction to a changed power consumption of a respective electrical load (132A, ..., 134C; 205; 430, 440), characterized in that the electrical load grouping device comprises a processor, a load switch (ls1, ls2, ls3) and/or a circuit breaker for connecting and disconnecting one or more groups (230A, ..., 236C) of the electrical loads with the electrical load grouping device , wherein the electrical load grouping device (110; 210; 310; 410) is configured for assigning the respective electrical load (132A, ..., 134C; 205; 430, 440) to a group (130A, 130B; 230A, ..., 236C; 310A, ..., 310D; 450) of electrical loads (132A, ..., 134C; 205; 430, 440) associated to an electrical load sensor (120A, 120B; S1, S2, S3, S11, ..., S36) or groups (130A, 130B; 230A, ..., 236C; 310A, ..., 310D; 450) of electrical loads (132A, ..., 134C; 205; 430, 440) associated to electrical load sensors (120A, 120B; S1, S2, S3, S11, ..., S36), based on which electrical load sensor (120A, 120B; S1, S2, S3, S11, ..., S36) or which electrical load sensors (120A, 120B; S1, S2, S3, S11, ..., S36) measured the changed value of the electrical parameter received in reaction to the changed power consumption of the respective electrical load (132A, ..., 134C; 205; 430, 440), and wherein the electrical load grouping device (110; 210; 310; 410) is further configured for triggering the changed power consumption of the respective electrical load (132A, ..., 134C; 205; 430, 440). wherein the electrical load grouping device (110; 210; 310; 410) is configured for receiving a changed value of the electrical parameter from one or more of the electrical load sensors (120A, 120B; S1, S2, S3, S11, ..., S36) in reaction to a changed power consumption of a respective electrical load (132A, ..., 134C; 205; 430, 440), characterized in that the electrical load grouping device comprises a processor, a load switch (ls1, ls2, ls3) and/or a circuit breaker for connecting and disconnecting one or more groups (230A, ..., 236C) of the electrical loads with the electrical load grouping device , wherein the electrical load grouping device (110; 210; 310; 410) is configured for assigning the respective electrical load (132A, ..., 134C; 205; 430, 440) to a group (130A, 130B; 230A, ..., 236C; 310A, ..., 310D; 450) of electrical loads (132A, ..., 134C; 205; 430, 440) associated to an electrical load sensor (120A, 120B; S1, S2, S3, S11, ..., S36) or groups (130A, 130B; 230A, ..., 236C; 310A, ..., 310D; 450) of electrical loads (132A, ..., 134C; 205; 430, 440) associated to electrical load sensors (120A, 120B; S1, S2, S3, S11, ..., S36), based on which electrical load sensor (120A, 120B; S1, S2, S3, S11, ..., S36) or which electrical load sensors (120A, 120B; S1, S2, S3, S11, ..., S36) measured the changed value of the electrical parameter received in reaction to the changed power consumption of the respective electrical load (132A, ..., 134C; 205; 430, 440), and wherein the electrical load grouping device (110; 210; 310; 410) is further configured for triggering the changed power consumption of the respective electrical load (132A, ..., 134C; 205; 430, 440). <EOS>