Earlier today, Puerto Rico's Electric Power Authority announced that the entire island was without power.

It's expected that it could take up to 36 hours to restore power, but in the meantime, some 662 Tesla batteries (a combination or Powerwall and Powerpack units) are up and running, supplying essential juice.

Related - Tesla Sends Powerwalls To Puerto Rico To Aid In Relief Effort

Tesla CEO Elon Musk says Tesla Energy is working 24/7 to get more battery energy installations activated to assist with the island nation's struggle to get essential services back on line.

Tesla's efforts to provide reliable power in Puerto Rico have been ongoing for quite some time now. Here are just a few examples of Tesla's contributions to support the island's power grid:

Tesla Releases Photos Of Solar/Battery Project At Puerto Rico Hospital

Musk Says Tesla Could Scale Up Powerpack/Solar To Untie Puerto Rico From Grid

A Look At The Scale Of Tesla’s Puerto Rico Electricity Solution