The theoretical efficiency of isothermal energy storage approaches 100% for perfect heat transfer to the environment.

The reaction is exothermic and its theoretical efficiency of 88% has been achieved in practice.

One of the biggest claimed advantages of nantennas is their high theoretical efficiency.

When compared to the theoretical efficiency of single junction solar cells (30%), nantennas appear to have a significant advantage.

A theoretical "infinity-layer" cell would have a theoretical efficiency of 64%.

This lowers the maximum theoretical thermal efficiency of the reactor.

For the same steam conditions, coal, nuclear and gas power plants all have the same theoretical efficiency.

Considering the spectrum losses alone, a solar cell has a peak theoretical efficiency of 48%.

"And what good is theoretical efficiency when your enhancement routines will leave the system unstable?"

Such cogeneration systems can yield theoretical efficiencies above 95%.