Daily Dot technology reporter Phillip Tracy was on site at the Las Vegas Convention Center when it happened.
And this wasn't even the first major mishap of the week - on Tuesday, the opening day of the show, heavy rains spoiled the unveiling of Google's massive outdoor booth.
The Consumer Electronics Show was shut down briefly due to a blackout.
Even after the power was restored, companies had to go through the hassle of resetting devices on display - those connected wirelessly with each other, in particular.
Public service announcements played over an intercom thanking attendees for their patience while the work to resolve the issue continued.
The Celebs, The Events, The Tech: Inside CES 2018
The power failure followed heavy rain on Tuesday, which had forced Google to shut one of its booths located in the LVCC's vehicle park.
LG Electronics used the power cut to promote its OLED TV by saying, "Even without power, #CES2018 still can't match the ideal black of an #LGOLEDTV".
The irony of the incident was not lost on CES attendees and other social media users with the hashtag #CESBlackout quickly going viral.
"A preliminary assessment indicates that condensation from heavy rainfall caused a flashover on one of the facility's transformers", the Verge quotes the Consumer Technology Association by way of an explanation.
Attendees took to Twitter to share images and poke fun at the eerily darkened convention space. Both large and smaller ones rely on the annual trade show to ink deals that will translate to cash months in the future; the blackout disrupted some of the product demos, panels and meetings key to those deals. The power went out in the central hall of #CES2018! My colleague @jeffersongraham is inside South Hall here and says there is still power.