“In hindsight, we laid the foundations for Porsche's future involvement in Formula E during the LMP1 project,” said Malte Huneke, its Technical Project Leader for Formula E.
“We used the insights gained during that time in the development of the Porsche Formula E powertrain. We focused on building a highly effective powertrain with the highest level of efficiency.
“In recent months, we have been able to sound out the reliability of the Porsche Formula E powertrain on the racetrack and on the test bench.
“We are very pleased and are optimistic going into the final preparations for the first race.”
Regarding the '99X' moniker, a Porsche release states that: “The highest number, nine, was used twice, to re-emphasise the importance of the Formula E project for Porsche, while the X stands for the forward-looking approach and prototype racing.”
Official pre-season testing takes place at Valencia in October before a double-header to open the 2019/20 season in Riyadh on November 22-23.