Plug-in solar has long been popular in Europe, but rising energy costs and a raft of new state laws are boosting its popularity in the U.S.

The sudden emergence of plug-in solar is timely, given the high concern about energy affordability. It offers renters and apartment dwellers – more than one-third of US households – a way to cut their ...

After eight months of living with DIY solar, I've become obsessed. I've spent countless hours staring at energy data, ...

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As electricity prices soar and rooftop solar subsidies vanish, some U.S. renters and homeowners are surreptitiously installing solar panels on balconies and in backyards without their utility’s ...