He couldn't summon the energy to leave his room for a drink.
Times, Sunday Times (2016)
When a society cannot summon the energy to give birth to new generations, it is losing the will to live.
Times, Sunday Times (2010)
The hardest part of life on Mauritius is summoning the energy to drag yourself away from the pool.
The Sun (2016)
Seepent-up energy
Definition of 'summon'
summon
(sʌmən)Explore 'summon' in the dictionary
verb
If you summon a quality, you make a great effort to have it. For example, if you summon the courage or strength to do something, you make a great effort to be brave or strong, so that you will be able to do it.