So, let's see: Let's assume 550HP from the ICE.Cold Fussion wrote: The 2009 spec cars were close to 700 hp, so for much of the straight they are down on power compared to 2009.
Difference would be 150HP or 110kW. 5,5MJ would give you those 150HP for 50s. That should roughly cover the Full Throttle time. So Overall, the effective Energy available should be roughly similar.