A method of matching sources to loads includes affecting load activity at a load with a pattern, receiving source activity data representing source activity at a plurality of sources, and matching the load to at least one source based on the source activity data. A system for matching sources to loads includes a load activity manipulator operably connected to a load and configured to affect load activity of the load with a pattern. The system for matching sources to loads further includes an activity monitor configured to receive source activity data representing source activity at the sources. The system for matching sources to loads also includes a matching engine operably connected to the activity monitor and configured to match the load to at least one source based on the source activity data.