When I wrote this post, I didn't want to break anything. It was strange to me that a long inserter is the most energy efficient, but it transports objects over long distances and faster than a regular one. So I just suggest only increasing its power consumption. I still think 24 kW would be a good i...

With 18kW energy consumption it's the cheapest inserter for consume kJ per swing: base (yellow) inserter use 13kw * 72 (ticks per swing)/ 60 = 15.6 кJ long-handed: 18kw * 50 (ticks per swing)/ 60 = 15.0 кJ fast: 46kw * 26 (ticks per swing)/ 60 = 19.933 kJ But long-handed work faster and do more work...