You'll be fine. Just give them enough light so that they don't think it's dark. Keep the light cycle as close to normal as you can while under the minimized light (ie. if you were running 18/6, stick with that).
I wish I could run a generator here. Looks like I need to invest in some more 12v stuff. I have some PC fans running off of 12v car batteries that I charge at a friend's house where theres power. Think I have some rgb flexible strips but I really dont know if they'd be worth the trouble. Had some fresh cuts going in the bubble cloner, but they were done before I made it home. Bummer
They don't need a whole lot of light, just enough so that they don't think it's their dark period is all. They won't grow much under the reduced light, but they won't go into flower either. I know at least two people who have used these touch lights to keep the plants thinking it's daytime under power loss situations.
Well even in the greatest country on earth, there are still severe storms that cause damage to the power grid for thousands of people. Glad you have had a consistent source of power for such a long duration.
The May 2010 flood?inverters are super quiet...I bought one of these 10 years ago for emergencies, after a flood..Have not had to use it...yet, but it is whisper quiet. And you can buy an off brand for $500
Honda EU2200i Super Quiet Inverter Generator | Honda Generators
The Honda EU2200i super quiet inverter generator offers 2200 watts of power. Extremely quiet and fuel efficient, this portable generator is ideal for camping & RV use.powerequipment.honda.com
Yes, I believe that was the one!! After that I bought the Honda inverter, a Harbor Freight generator, and 3 large pumps. None of the stuff has ever been used (knock on wood). I hope to keep it that way.