Oasis Montana Inc.
Renewable Energy Supply and Design
406-777-4321or 4309
(877-627-4768 toll-free order line)
Tech. Support: 1 (406) 777-4321 or 4309
e-mail: info@oasismontana.com
Home Page: www.oasismontana.com

Visit us on the web for product and project information!
For grid-tied power systems, www.grid-tie.com
Solar water pumping:  www.PVsolarpumps.com
Non-electric gas appliances, www.LPappliances.com
Efficient and DC appliances, www.eco-fridge.com
And our main page at www.oasismontana.com


Renewable Energy Newsletter
Fall 2004 page 3

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Solar Power for your RV or Marine Application

Solar power, and sometimes wind, are natural additions for your RV or boat. Since you are already set up to run 12V, it’s very easy to place one or more modules atop your camper for additional battery charging. These systems work as well on the roof of an RV as they do on the roof of your remote cabin. We can design any size system for your RV or boat—the only limit is the amount of space on your roof.

Since batteries are charged when traveling, RVs normally depend mostly on the vehicle’s alternator for the primary power source. Power to charge the battery is also provided through a converter when plugged into regular utility or ‘shore’ power. But for those folks who like to spend days or weeks (or longer!) not traveling or plugged in, photovoltaics can mean freedom with plenty of power. It can also mean peace and quiet—especially if you do not have to run your generator. Also, an RV’s battery bank and fuse box make installing a solar power system easy to do. If you cannot do it yourself, your RV shop is generally glad to do the installation for you, as can someone with general ‘handyperson’ skills.

Many of our RV systems use one or two modules—but like any other power system it’s important to analyze your power needs. You will need to consider the wattage of the appliances and lights you want to power as well as the average hours of use each day. Unlike a stationary power system, though, RVs travel through different sunshine zones and park at varying angles to the sun, sometimes in shade, sometimes not; people with the same model RV can have very dissimilar power usage. These factors must be considered—if you have questions, do not hesitate to give us a call. 

Your battery charging depends on the intensity of sunlight and exposure to time in the sun. A sunny day can really sock some power into your batteries—and you’ll get some charging on cloudy days, though at a lower output. Also, solar modules provide a daily maintenance charge to help protect your batteries, as sitting idle for several months can be permanently damaging to them.

For marine use, the addition of a small wind generator may be even more cost-effective than solar, as oft times there are very windy conditions on the water. The smaller Chinook wind generators (http://www.chinookdistributing.com/wind-turbines) for more information) mount on a 1.5” section of schedule 40 steel pipe, and take up little room (of course, the unit should be mounted out of reach of all personnel for safety’s sake). These self-regulating units are easy to add to an existing battery system. Even some RVers use a wind generator, by setting up a weighted tripod when parked (one fellow built a metal tongue he could drive onto so he could secure his wind genny pole). Call or e-mail us if you are thinking about adding solar or wind power to your RV or boat; 877-627-4768 or 4778.

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RE Fall 2004 Newsletter From Oasis Montana

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