The energy used to drive those systems should therefore be deducted from the total usable energy or energy removed from the area.
Is ceart, dá bhrí sin, an fuinneamh is gá chun na córais sin a thiomáint a dhealú ón bhfuinneamh iomlán inúsáidte nó ón bhfuinneamh iomlán a bhaintear as an gceantar.