SAN ANTONIO – UPDATE: CPS Energy crews have been feverishly working to try to restore power to residents since Thursday's storm.
There are currently 200 local workers in the field.
CPS Energy said it has called in crews from the Rio Grande Valley, who expect to arrive at midnight.
The city has opened cooling centers all over the city in response to the power outages.
VIA is offering free rides to anyone who needs to get to a cooling center.
With all hands on deck Friday, CPS Energy crews worked to restore power to thousands of homes and businesses on the hottest day of the year.
Wind, hail and rain battered San Antonio Thursday, leaving more than 57,000 customers without power. By 10:45 a.m. Friday, an online map still showed more than 17,000 customers without power or, by extension, air conditioning.
With temperatures reaching the mid to upper 90s, that was inconvenient and uncomfortable for those affected.
"Can you imagine what it's like in there without air, without electricity? No lights, no air. There's nothing in that apartment," said Roy Roper, sitting outside his apartment building Friday morning.
CPS Energy spokesman Daniel Segura said the utility had brought in everyone possible to help with clean up and repair.
"Any available crew that we have, contractors, getting them out here, hundreds and hundreds of crew members out here getting the job done," Segura said.
A little after 6:30 p.m., the outage map showed fewer than 12,000 customers still affected, and Segura said outages were expected to extend through Saturday.