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are you sure it isnt waking up while the lid is shut? you should here no fans and the light should pulsate.

when the macbook sleeps your work is saved to the ram and everything is put on standby and the SMC waits for an input i.e. keyboard, mouse to wake it up. the SMC only uses a few % of power overnight.
 
are you sure it isnt waking up while the lid is shut? you should here no fans and the light should pulsate.

when the macbook sleeps your work is saved to the ram and everything is put on standby and the SMC waits for an input i.e. keyboard, mouse to wake it up. the SMC only uses a few % of power overnight.

Thanks a bunch!
 
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