Once you get 'hooked' on solar panels, it is difficult to listen to your generator without thinking '1 more panel, and I would not be starting this noisy generator'.
That was my feeling. My first system was a pair of 45 watt panels, that along with wire, mounts, PWM 15 amp controller, and instructions cost $750 back in 1994. Back then you could rent a 4 BR house for $750, now that would cost well over $1800 rent!
My next panel was in 95, a 75 W that sort of maxed out the controller, on sale for 'only' $375. By 1999, I was ready to step up to MPPT controller (that had just come out and was very expensive I think my SP50 amp controller was around $375. A pair of $429 120 watt panels where also greatly discounted at the time.
Now you can buy a 140 watt panel for $229 at
SunElec.com My whole system can be replaced for about $1,000.
I have saved well over $3,000 by saving $10 a night and dry camping over 300 times from 1994 - 2005, when I started full timing, and camped well over 600 times since that time!
Fred.