But more importantly, the EREV tech is the key here. And this has been talked about since recent Zhuhai air show with all those UGVs. Using high voltage ePlatform, you get much higher energy efficiency + lower heat for the same power. You can design the same engine power with much more compact propulsion platforms, because you can run the eMotor at much higher rpm..
The energy you get is stored in battery, which balances out energy consumption peaks/valleys. The power generated can be spread efficiently across weapon platform, sensors and propulsion. One measure of NEVs is improve NVH (noise, vibration and harshness). So you get quieter and more steady navigation. Good for both crew and stealth purposes. Of course, reduced heat from running on battery and higher voltage also reduces thermal signature.