Florida Power & Light Co. announced that service has been restored to essentially all of its 4.4 million customers who were impacted by Hurricane Irma 10 days after the massive storm exited its service territory.

Now, with limited work left to clean up in the hardest-hit areas, FPL is releasing the majority of its utility and contract workers who responded from across the country and Canada.

“I cannot thank our customers enough for their patience, support and understanding, particularly those who were without power the longest,” said Eric Silagy, president and CEO of FPL. “Hurricane Irma was unprecedented by almost every measure – including its size and scope, destructive power and slow movement. Irma’s fierce winds, strong storm surge and flooding knocked out power to more than 4.4 million FPL customers, the largest ever in our history. But, we pulled together and completed the fastest restoration of the largest amount of people by any one utility in U.S. history.”

Even before Irma exited FPL’s service territory, the energy company had restored approximately one million customers, with two million customers restored by the end of the first full day of restoration. The vast majority of customers had their power back on within a week of Irma’s passing – but as is the case in any major restoration effort of Irma’s magnitude, there are some areas where restoration was more difficult and time-consuming.

There’s no doubt Irma left her mark on Florida. The powerful storm spawned tornadoes, uprooted large trees, transformed roads into rivers, flooded isolated areas, tore roofs off homes and businesses, created salt contamination that damaged electrical equipment and left millions of Floridians in the dark. FPL assembled and pre-positioned the largest restoration workforce in U.S. history – and then continued to amass an army that at its peak numbered more than 28,000 hardworking men and women from 30 states and Canada who worked around the clock to get Florida communities back to normal.

Crews found extensive vegetation challenges in the hardest-hit areas, including fallen trees pulling down power lines and dense debris blocking roadways. In some cases, crews spent hours and days removing debris before it was safe for restoration workers to access equipment and begin making repairs. In anticipation of the massive vegetation challenges, FPL brought in twice as many tree trimming crews to support the Irma restoration effort compared with Hurricane Wilma in 2005.

Over the last 11 years, FPL has invested nearly $3 billion to make the energy grid smarter, stronger and more storm-resilient, and those investments are paying off for customers. No hardened transmission structures – the backbone of the system – were lost. All of FPL’s substations were up and running within a day following Irma. Hardening helped make the system more resilient and provided for a much faster restoration. In fact, FPL lost only a fraction of its poles, which today numbers 1.2 million, as compared with Wilma – with early estimates of approximately 2,500 downed (0.2 percent) during Irma as compared with roughly 12,000 during Wilma. And, FPL’s smart grid positioned the company to restore hundreds of thousands of customers during the storm without the need to roll trucks.

With limited work left to clean up in the hardest-hit areas, FPL is releasing most its utility and contract workers who responded from across the country and Canada. Customers may experience outages over the coming weeks and months due to weakened trees and branches that could fall, impacting power lines and electric equipment. In addition, salt contamination along the coastline and significant wind gusts, which may loosen some electrical connections, may lead to increased outages following the storm. FPL crews will continue to respond as these outages are identified.