is your plant in flowering or veg??
Either way your plant will be fine, im just curious.
the reason theyll be fine, is because this whole time you have been growing, the leaves on your plant have been sucking up all the energy that they can from the light. If it ends up being in darkness for longer than its used to, its going to basically use all that stored energy to keep itself growing and thriving, while its waiting for the light to come back. Now, of course if you leave it in the dark for too long, itll die, but i think youll be just fine with your current situation. Like stated above, if you can move them to a windowsill or somethin so they can at least get some ambient light goin on, itll help them even more. But even if you leave them in the dark, they should be more than ok bro.