As Puerto Rico reeled from its worst power outage in months, one that left virtually all of the island’s 1.5 million customers without electricity for days, the town of Adjuntas was an oasis.On a Thursday morning in early April, with school closed, children filled seats in an air-conditioned cinema at a community center, a pizzeria prepped its kitchen for the lunch rush, and the local barbershop welcomed customers looking for a quick trim.The contrast shows why Adjuntas, a community of about 18,000 in central Puerto Rico’s densely forested mountains, has become a showcase for how solar power could address one of the island’s most vexing problems — an ene …
