A longtime bakery owner in central Puerto Rico, Miriam Sierra never imagined she’d also become one of her town’s largest electricity suppliers.
But on a recent weekday, the 51 solar panels on her roof in the small town of Castañer were feeding a bank of industrial batteries and inverters inside a beauty salon across the street. From there, the electricity was flowing to the US Post Office, an ice cream parlor, a private residence and an electric vehicle charger.
