The NTT IndyCar Series has made the decision to delay the introduction of its energy recovery system.

“The much-anticipated debut of the new power unit is expected to launch after the 108th Indianapolis 500, during the second half of the 2024 IndyCar Series season,” the series confirmed.

The call comes one year and one day after IndyCar announced it would be halting the introduction of its new 2.4-liter twin-turbo V6 engines in favor of continuing with its 2.2-liter motors and having Chevrolet and Ilmor Engineering, and Honda and Honda Performance Development, reassign their sizable new 2.4L motor creation budgets to designing and making new supercapacitor-based ERS units for 2024.