Amazon now has hundreds of flight-ready satellites standing idle in Florida, waiting to join the company’s low-Earth orbit Internet constellation, an Amazon official said Tuesday.

“They’re built, and sitting in a payload processing facility waiting for trips to orbit,” said Steve Metayer, vice president of Amazon Leo Production Operations, during a teleconference with reporters. “And we’re currently manufacturing several satellites a day.”

Metayer spoke on the eve of the company’s next mission, during which an Ariane 64 rocket will launch three dozen Amazon Leo satellites into orbit from a spaceport in French Guiana. Liftoff is targeted for 7:53 am ET (11:53 UTC) on Wednesday.

Arianespace steps up

France-based Arianespace has emerged as a critical partner for Amazon, which, to date, has had the majority of its 331 satellites launched on Atlas V rockets. However, Amazon has just one more mission booked on this rocket, which is operated by United Launch Alliance, as the vehicle is slated for retirement.