I have a radiator fan from a 90's VW on the bench.  Connected to a 12V
battery it draws 15A continuous, 25A on startup.
Add to that another slightly smaller fan inside the car and a compressor
which I would bet consumes a lot more power than a fan..
if that really is 30A at 12V, the Chevy Volt has a very efficient AC system.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
kimbrennan@mac.com
Sent: Friday, July 24, 2015 7:46 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Electric Power Steering

Chevy Volt AC draws 30 amps. Got that from the mechanic at the dealer.