In any case, there is no sparecapacity at the factory in Solihull.
Times, Sunday Times (2013)
It was time to test the view that there could be more sparecapacity in the economy than had been thought.
Times, Sunday Times (2006)
This winter will see us with almost no spare electricity generation capacity.
Times, Sunday Times (2014)
Definition of 'capacity'
capacity
(kəpæsɪti)Explore 'capacity' in the dictionary
uncountable noun
The capacity of something such as a factory, industry, or region is the quantity of things thatit can produce or deliver with the equipment or resources that are available.
Definition of 'spare'
spare
(speəʳ)Explore 'spare' in the dictionary
adjective [usually ADJECTIVE noun]
You use spare to describe something that is the same as things that you are already using, but that you do not need yet and are keeping ready in case another one is needed.