Can a 240watt panel power a 1300watt a/c?


New Member
Hypothetically, if I have a 240watt solar panel on my RV and at 12v, doesn't that equate to 2880watts? I have a ~1300watt dometic rooftop a/c. Can someone break down the math for me why that solar panel (under ideal sun) wouldn't be able to power that a/c *and* charge whatever is in excess to the battery? I remember when I started doing the research, someone had spec'd out that I needed 3 x 240watt panels for whatever reason and I'm trying to comprehend.


Staff member
So, if you need the ac to operate for 10 hours 50%on, 50% off, ya need 507Ah bank.
To solar power that you need 1300W solar panels.


Photon Sorcerer
No for any way to keep you cool through the day unless you only needed to turn it on for a few minutes, but then you'd probably not need A/C at all.

By the end of the year I will have 2000 watts of panels for my RV and I don't think that will be enough to power one of my Dometic 15k BTU units on my roof without losing power.