The phrase "an increase in the capacity of" is correct and usable in written English.
It can be used when discussing growth or enhancement in the ability or potential of something, such as a system, organization, or resource.
Example: "The new training program resulted in an increase in the capacity of our team to handle complex projects."
Alternatives: "a boost in the capability of" or "an enhancement of the capacity of".
Hypotension from an increase in the capacity of the blood vessels is a factor in fainting (see syncope).
These benefits include an increase in the frequency of trains, and/or better recovery from delays essentially an increase in the capacity of the system.
Thus, there could be an increase in the capacity of the liver, and perhaps the intestine, to produce and retain glutamate after feeding.
Continued development of system analysis codes has resulted in the recovery of conservatisms originally imposed on nuclear power reactors, allowing for an increase in the capacity of commercial nuclear reactors.
The results showed that reducing track stiffness by modifying the elastic elements over the ballast layer leads to an increase in the capacity of the track to dissipate energy and to reduce its settlement.
This might however be counterbalanced by an increase in the capacity of the peripheral phagocytic response, as represented by an increase in neutrophil numbers within both the spleen (as observed here) and the peripheral blood [46].
The increase in the density of active transmitters outweighs the degradation in capacity, so there is an increase in the capacity across unit cut.
So combine low prices from abroad, increased competitiveness and an increase in the spare capacity of the employment sector and we have our current low inflation level.
The increase in the length means the increase in the capacity of the walkway.
This matches with the observed increase in the capacity of oxidative substrate degradation upon DGAT1 overexpression.
The DH said the report did not take into account an increase in the number of staff or plans to increase capacity to deliver a seven-day NHS.
