Weary of Power Outages, Puerto Ricans Find Solace in Solar

SAN JUAN, Puerto Rico—Rafael Guzmán and Leinaí Romero spent more than four months without power after Hurricane Maria struck last September, relying on a generator to run a refrigerator, two fans and cellphone chargers. When the married couple learned in April they were having a baby, they made a pledge: “We aren’t going through that again.”

They installed 16 solar panels on the roof of their home in Caguas, south of San Juan, and a battery that charges during the day and allows them to run appliances and a TV at night, said…