A system comprising: a transceiver (90, 370) in a first device (18, 306) and configured to receive wirelessly or over a first powerline and from a second device (16, 17, 22, 23, 44, 302, 318) (i) a voltage value of a first voltage detected between two of a plurality of bus bars, wherein the plurality of bus bars are in a distributed power source, wherein the distributed power source supplies power from the two of the plurality of bus bars to a load (14, 334), and wherein the load (14, 334) is distinct from the first device (18, 306) and the second device (16, 17, 22, 23, 44, 302, 318), or (ii) a current value of a current detected by a current sensor (30, 38, 42, 336) and drawn from the two of the plurality of bus bars by the load (14, 334), wherein the current sensor (30, 38, 42, 336) is remotely located away from the distributed power source; a sensing module (84, 364) configured to one of (i) if the transceiver (90, 370) receives the current value, detect the first voltage and timestamp the voltage value with a first timestamp, and (ii) if the transceiver (90, 370) receives the voltage value, determine the current and timestamp the current value with a second timestamp; a parameter module (86, 366) configured to estimate a second voltage at the current sensor (30, 38, 42, 336) based on the voltage value, and determine at least one parameter of the load (14, 334) based on the second voltage, the current value, the first timestamp and the second timestamp, wherein the at least one parameter includes (i) power drawn by the load (14, 334), and (ii) energy used by the load (14, 334); and a metering module (88, 368) configured to report the at least one parameter. a transceiver (90, 370) in a first device (18, 306) and configured to receive wirelessly or over a first powerline and from a second device (16, 17, 22, 23, 44, 302, 318) (i) a voltage value of a first voltage detected between two of a plurality of bus bars, wherein the plurality of bus bars are in a distributed power source, wherein the distributed power source supplies power from the two of the plurality of bus bars to a load (14, 334), and wherein the load (14, 334) is distinct from the first device (18, 306) and the second device (16, 17, 22, 23, 44, 302, 318), or (ii) a current value of a current detected by a current sensor (30, 38, 42, 336) and drawn from the two of the plurality of bus bars by the load (14, 334), wherein the current sensor (30, 38, 42, 336) is remotely located away from the distributed power source; a sensing module (84, 364) configured to one of (i) if the transceiver (90, 370) receives the current value, detect the first voltage and timestamp the voltage value with a first timestamp, and (ii) if the transceiver (90, 370) receives the voltage value, determine the current and timestamp the current value with a second timestamp; a parameter module (86, 366) configured to estimate a second voltage at the current sensor (30, 38, 42, 336) based on the voltage value, and determine at least one parameter of the load (14, 334) based on the second voltage, the current value, the first timestamp and the second timestamp, wherein the at least one parameter includes (i) power drawn by the load (14, 334), and (ii) energy used by the load (14, 334); and estimate a second voltage at the current sensor (30, 38, 42, 336) based on the voltage value, and determine at least one parameter of the load (14, 334) based on the second voltage, the current value, the first timestamp and the second timestamp, wherein the at least one parameter includes (i) power drawn by the load (14, 334), and (ii) energy used by the load (14, 334); and a metering module (88, 368) configured to report the at least one parameter.