Solar panels. Batteries. Emergency fossil fuel-fired generators. They have all been deployed across Puerto Rico to help get the lights back on in the months following devastating hurricanes Irma and Maria.

Now it is blockchain’s turn.

Australian blockchain technology provider Power Ledger has its eyes set on the island, where power was wiped out by Irma and Maria last year. The company hired Dante Disparte, a grid resiliency and security expert from Puerto Rico, to lead its...