The phrase "as efficiently as possible and" is correct and usable in written English.
It can be used when discussing the manner in which a task should be completed, emphasizing the importance of efficiency.
Example: "We need to complete this project as efficiently as possible and ensure that we meet the deadline."
Alternatives: "in the most efficient way" or "as effectively as we can".
That means operating as efficiently as possible and designing the most cost-effective social and environmental programmes," he said.
Our sawmills must pay full market price for standing timber, saw and dress the lumber as efficiently as possible, and sell it on the retail market.
"He worked tirelessly to ensure that S-21 ran as efficiently as possible and did so out of unquestioning loyalty to his superiors," the judge said.
She said: "As the events of the summer showed, it is essential that HMPO is run as efficiently as possible and is as accountable as possible".
Someone had framed a man for murder, so he used his strength and intelligence to solve the case as efficiently as possible, and that was it.
Instead, "Lean" is a mindset that can be applied in any situation — even those that are extremely capital intensive — to test as efficiently as possible, and iterate accordingly.
Now a Shanghai-based startup called Gfresh is building a mobile marketplace and logistics service to help industry players buy, sell and transport live seafood as efficiently as possible throughout and beyond China.
Our humanitarian agencies are extremely innovative in how they use scarce resources as efficiently as possible, from cash and vouchers to drone-delivery of aid in hard-to-reach areas.
When a striking posture is taken by snakes, they display their specific morphological characteristics as signals towards the presumptive signal receivers so that the receivers will categorize them as snakes as efficiently as possible, be threatened and withdraw.
The architecture of the program is designed to perform a full mutagenesis analysis as efficiently as possible by implementing a quick and space sensitive procedure.
Thus, the marketing process needs to be undertaken as efficiently as possible, at the lowest cost and with the minimum of losses occurring at each stage.
