Google on Thursday joined a smart-grid trade association that promotes energy efficiency in the power grid and home-energy monitoring.
The group, called Demand Response and Smart Grid Coalition (DRSG), includes companies that manufacture networked electricity meters and software for sharing information between consumers and utilities.
Google is increasingly active in the energy business. Through its Google.org philanthropy, it has invested in a few clean-energy ventures.
In September, it announced a partnership with General Electric to lobby for clean-energy policies and to develop smart-grid software.