AlertMe, maker of a system that allows homeowners to measure and control the energy used by their appliances, has raised $13 million in a second round of funding. By hooking into a household’s broadband connection, the Energy Kit transmits power consumption data recorded from individual appliances to a centralized web interface where customers can view the information and actually control use. For example, they can flip switches, alter settings during peak energy periods, and adjust their thermostats from a remote location.

The recent round of funding came from Good Energies, Index Ventures, SET Venture Partners and VantagePoint Venture Partners (a firm that’s on a roll with the cleantech investments and just backed similar company Tendril). In the past, U.K.-based AlertMe raised $8.3 million.