According to CNBC, which talked with several SolarCity employees, hundreds were fired under the pretense of performance review results.

The problem, at least according to some of those employees,is that those reviews never took place.

States CNBC:

"Echoing reports from earlier this month, these SolarCity employees say they were surprised to be told they were fired for performance reasons, claiming Tesla had not conducted performance reviews since acquiring the solar energy business."

"Three recently fired SolarCity employees (who worked in disparate city offices, and were contacted separately by CNBC) said they asked HR at Tesla for a copy of their performance reviews. But those never materialized."