This is the 6574th most frequent German word.
energieeffizienz
The efficiency with which energy is used to perform a task or produce a result.
In this sentence, 'Energieeffizienz' is used as a noun to describe the concept of efficient energy use in the context of building design.
Die Energieeffizienz eines Gebäudes kann durch moderne Dämmungstechniken verbessert werden.
The energy efficiency of a building can be improved through modern insulation techniques.
Here, 'Energieeffizienz' functions as a subject noun referring to the organizational strategies aimed at optimizing energy usage.
Unternehmen suchen nach Wegen, ihre Energieeffizienz zu erhöhen, um Kosten zu reduzieren.
Companies are looking for ways to increase their energy efficiency in order to reduce costs.
In this case, 'Energieeffizienz' is used to denote an aspect of productivity and conservation within technological implementation.