Integrated Efficiency

Efficiency can be point efficiency vs integrated efficiency.

For example, higher fuel efficiency of an engine may be an example of point efficiency, but integrated efficiency is broader. For example, OSE's engine strategy may be less fuel efficient, but more cost effective by 1000x due to multipurpose functionality via modularity (10x), and 10x via lifetime design (lower cost to maintain, by a factor of 10), and another 10x by open source automation - meaning the cost of doing a task is reduced by 10x. So it's all in how efficiency is defined.

For example, a maintainable internal combustion engine may be 25% round trip efficient compared to a fuel cell (50% [1]