For some time now, I’ve wanted to learn more about solar electricity. I have read books on it and know how it works in principal, but I have basically no first hand experience as it comes to solar power. At the same time, my electrical load is growing on my truck when camping, especially once I install the CB radio installed in my truck.

Why I Am Thinking Of Going Solar

I hate having to turn on the truck to charge the battery every couple hours, especially when I am sticking around a campsite all day rather then traveling. With higher gas prices this year, due to being an election year, I am thinking of spending more time at a campsite – especially if I do more hunting and fishing this year.

Idling the truck works okay for creating electricity, especially in summer evenings when the darkness is short, and I’m usually not back to camp until 8 or 9 PM. But sometimes when I am hanging out in camp – especially in the morning – it’s a pain to have to start the engine up and listen to the racket it makes, in the quiet of the woods. A solar cell would start charging the battery as soon as the sun rises, and by the time I awoke, the deep-cycle would probably be almost fully charged.

I worry about idling my truck a lot too. Car and truck engines are not designed to idle at a set speed for long periods of time. While engines are a lot better then years past, I’ve always felt it puts a lot of strain on the engine doing this. That said, I had my previous truck until it was 13 years old, and the engine ran fine. I got rid of it because I wanted a new full-size truck and the old one had increased mechanical costs from things like brakes and suspension parts that kept breaking down in the boonies.

I’ve started looking at solar panels, especially in the light of the fact that solar power has come down so much in price. They say it’s about $1 a watt, although for the most part the solar panels I’ve looked at are closer to $1.40-$1.50 a watt. Even at the $1.50 watt price it’s not unreasonable, as I’ve seen several 100 watt panels below $150.

Not only that, but the modern solar panels are mono-crystalline, so they more produce more electricity in less space. The 100-watt mono-crystalline panels I’ve seen have dimensions of roughly 3.5 feet by 2.5 ft. Pretty darn small, especially compared to the amount of energy they generate. Have you ever tried generating 100 watts riding on stationary bike? It’s a lot of work – despite the fact we use incredible amounts of fossil energy in our homes. Even if I get only 50-60 watts out of the panel, that’s still a 1/2 a kilowatt hour per day.

Why I Don’t Use Solar Power Right Now

I’ve pondered solar power on and off. I’ve thought about mounting solar panels on my truck cap, but generally have frowned on the expense and the cost-benefit ratio. The reality is idling my truck to charge up the accessory battery works fairly well, and is low cost compared to driving it there and back.

Most of my energy use is at night when I am at camp for the night, sitting by the campfire, listening to music, lighting up the flag, the decorative lights, and LED lamps for general camp lighting. The sun doesn’t shine at night, so I would still have to use the alternator and idle as the battery runs low. Finding direct sunlight sometimes can sometimes be challenging at campsites far back in the woods. That’s why you have to make sure you have enough wire of sufficient gauge to put a solar panel a far distance away. But at 8.5 amp of current, the wire size shouldn’t have to be enormous.

I also had concerns about mounting the solar panels on the roof of my truck, going through car washes or if trees brushed along the roof top of my soon to be jacked up truck. I also figured it would reduce my fuel economy by wind resistance, canceling out all benefit to mounting it on the roof.

But the main reason I put off going solar, was  it just seemed like very little power for a lot of money. Spending like $200 bucks for 5-6 amps of power, didn’t seem like a good use of money, especially when the alternator puts out so much current. However, unlike an alternator the solar panel runs whenever the sun is up, while the alternator only spins when the engine is running – typically 10 minutes every 1.5-2.5 hours.