Smart plugs can help track energy use, but they also consume some power themselves. Knowing the standby draw helps you plan better.

Before you plug in every appliance in your home, know the risky ones. These common device categories can overload smart plugs or create safety issues.

Sources for the energy the world uses are changing, with a slow and steady shift from dirtier fuels to cleaner ones. Plug Power is a major player in the effort to use hydrogen for power, from the ...