Oasis Montana Inc.
Renewable Energy Supply and Design
406-777-4321or 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


 

November 2007 Newsletter Navigation 
Page 1:  Solar Electric grid-tie systems

index page 1 page 2 page 3 page 4 page 5 page 6
Oasis Montana Site Map
 

GREETINGS FROM OUR SOLAR POWERED OFFICE: After a very smoky summer, we are glad to get the cooler weather—and cleaner air—of autumn. Solar water pumping has really taken off for us this year, and we are happy to have provided water for families, irrigation, fisheries and livestock. Renewable energy systems are our focus, for remote homes, utility-tied residences, water pumping, RV, back-up or marine use. We offer complete systems to fit your project’s needs. If you want to do something to make your home or business ‘greener’ give us a call. We also offer a line of efficient electric and gas appliances to help keep a lid on your electric bill.
For those of you who aren’t “on line”, or are beginning your project, we have an extremely informative Product Catalog on disc for $10 ($18 out of country)—essential for your renewable energy library! Products, system sizing, pricing, components, importance of energy efficient appliances, battery care, and wind turbines are just some of the topics covered. If you are on-line, you can see example systems (costs, components and power output) at www.oasismontana.com/systems.html To assist your information input, we’ve tried to develop as much on-line information as we can. For solar water pumping, see www.PVsolarpumps.com; for utility-tied photovoltaic systems, visit www.grid-tie.com; for efficient AC appliances, DC ’fridges, coolers and freezers see www.eco-fridge.com; for natural and LP gas appliances, see www.LPappliances.com. Our main index page is www.oasismontana.com. We have a great deal of information on our web sites—please feel free to visit and stay a while!


Fronius IG and SMA Sunny Boy batteryless grid-tie solar inverters
 

Unlike most things in life, a batteryless grid-tie solar power system will pay for itself (and then some) in energy cost savings over its 20+ year expected life span. Current federal and state incentives can shorten this payback period even further (see www.dsireusa.org for details). Setting up one of these systems is very simple since the solar modules can be mounted on the roof of your home or, preferably, on a mount structure in your front/back yard with the grid-tie inverter mounted indoors or outdoors near your utility service entrance. Your solar array needs unobscured sunlight. Once the solar array is properly wired and connected to the inverter and the inverter is connected to your main AC breaker box, the system can be turned on and the solar array will begin feeding power to your home (assuming that the sun is still out!). This power will either be used directly by any 120/240 VAC loads that you have on at the time or, if the solar array is producing more power than your AC loads are using, the excess power is then sent back to the utility grid which turns your kilowatt-hour (kWh) meter backwards, reducing your monthly electric bill even further. The one drawback of this type of system is that for safety reasons it shuts down during a utility outage so you will be without power just like everyone else, since these types of grid-tie inverter systems do not offer battery back-up.

There are many different manufacturers of solar grid-tie inverters, but we lean towards the Fronius IG and SMA Sunny Boy lines due to their high efficiencies, built-in DC/AC disconnects, informative LCD displays/monitors and 10 year warranties. The Fronius units range in power output from 2,000 to 5,100 watts while the new Sunny Boy US series power range is from 3,000 to 7,000 watts (and, newer units will be available soon). The Sunny Boy inverters are slightly more efficient than the Fronius units, but the Fronius units weigh much less and have a more informative LCD display. All of the Sunny Boy new U.S. units can be used with 240 VAC single phase units or 3-phase AC power (208 or 277V) while only a couple of the Fronius IG units can be used in 208V 3-phase applications. Both manufacturers offer remote monitoring systems for their inverters so you can see how the system is performing from the comfort of your living room. The Sunny Beam allows you to keep tabs on up to 4 Sunny Boy inverters while the Fronius Personal Display will monitor up to 15 of their IG inverters. This usually isn’t a concern unless you plan to install a very large residential or commercial system with many inverters operating in parallel. To make a long story short, both SMA and Fronius make efficient and dependable solar grid-tie inverters that we are confident to quote to our customers. Please look over the two system quotes below and let us know if either of them would work for your residential or commercial application. And of course, we can design to whatever power system requirements you desire.

2.2 kW residential 240 VAC Fronius IG system:

Fronius solar grid-tie inverter solar electric power system12 Evergreen Spruce ES-190-RL 18V 190W solar modules
1 twelve module top-of-pole mount structure  (8” ID SCH80 steel pipe required)
1 50’ double ended Multi Contact (MC) cable assembly
1 Fronius IG 2000 240 VAC solar grid-tie inverter
1 Fronius personal display
1 Fronius wireless card (required for personal display usage)
Equipment total = $ Call us for current price

On average this system will produce ~8 kWh per day with 5 hours of full sun.


13.7 kW commercial 208 VAC SMA Sunny Boy system:

SMA Sunny Boy solar grid-tie inverter in 3-phase solar electric power system
72 Evergreen Spruce ES-190-RL 18V 190W solar modules
1 UniRac SunFrame flush mounting roof system
6 50’ double ended Multi Contact (MC) cable assemblies
2 SMA SB6000US 208 VAC 3-phase solar grid-tie inverters
1 Sunny Beam Monitor
2 Sunny Beam Antennas
Equipment total = $ Call us for your current price

On average this system will produce ~48 kWh per day with 5 hours of full sun. 

The small print: while we try and hold the line on prices, they are subject to change without notice.  System costs do not include freight or installation.

 “If we all knew what we were doing, it wouldn’t be called research.” --Albert Einstein

 

November 2007 Newsletter Navigation 
Page 1:  Solar Electric grid-tie systems
index page 1 page 2 page 3 page 4 page 5 page 6
Oasis Montana Site Map
 
 
Now in autumn, we are enjoying cool and wet (even snowy) conditions, but it was one hot and smoky summer and fall for many parts of the western U.S., and Montana was no exception. We were smug with our good snowpack, back in spring. Then our summer started with a week of 100+ degree weather, and continued to stay hot. We were blanketed in smoke from the horrific fires (1.3 million acres burned) until the middle of September, and unfortunately, many homes and a few lives have been lost. We have been able to help some people with water pumping to protect their properties, but our drought conditions and warm temps made for a very dry western tinderbox. If only those folks in Texas could’ve share perhaps 1/20th of their deluge from their state…

Even so, the garden and fruit trees kept us busy, and despite the smoke we still enjoyed camping, fishing, and canoeing in our local river (even though the water was quite low). We hope our legislators will work on commonsense future measures to mitigate the effects of warming temperatures and prolonged drought. One thought we have had (since we were less than a mile from our local small airport, a helibase that launched many helicopters and other aircraft for fighting fires) is that actual planning for these events would be a good idea (seeing as they are now part of our new normal)—how about reservoirs near these airports to make hauling the big buckets faster and more affordable? Here in Stevensville, we have several large irrigation ditches in close proximity to our airfield…. Well, it’s just my 2 cents worth!

PICOCELL controller inverter for array-direct water pumping for your 240VAC AC pump
In this issue we have some new products to share; one is an exciting new AC pump controller/inverter that can run your 240VAC (or 120V, or 3 phase, or 230VAC 50 hz) 1/3 to 2 horsepower pump directly off of a solar array – click here for more information on the PICOCELL controller/inverter (cost: $1220 plus shipping). This exciting new technology is designed for off-grid use, or emergency back-up. We have installation manuals, spec sheets, and pump kit information on our water pumping site.  Call or e-mail for more information.

New, small Energy Star rated AC refrigerator
We also have a new, small AC refrigerator, 7.1 cu.ft. for your home or cabin, the CP972SS. It’s a great size for space-limited kitchens, only 22”W x 22”D x 57”H and will sell at the great price of $459 plus shipping. With its lean size, the CP972SS is the ideal refrigerator for studio apartments, yachts, offices, and other settings in need of reliable cooling in a slim-fitting footprint. Visit here for more information on this and other (larger) refrigerators.

The best nuclear generating station is 93 million miles away, and is available for pretty much everyone!
Thomas Edison quote on Solar Energy

Iron Edison Batteries
We also have a new line of batteries to offer, manufactured by Iron Edison;
visit our information on this exciting new product line.

WHY IS THE PRICE OF SOLAR MODULES LIKELY TO INCREASE?

The International Trade Commission (ITC) is responding to a lawsuit brought about by SolarWorld and Suniva (U.S. module manufacturers) that low cost imported (i.e. Chinese) solar modules have hurt their competitiveness, so they are asking for a tariff on imported solar panels to ‘level the playing field’. Many pro-solar groups are opposing these tariffs, as they will increase the dollar-per-watt cost of installed solar power systems, and very negatively impact job growth in the solar sector – which had been bourgeoning in the past few years. In fact, it is estimated that 1 out of 50 new jobs is in the renewable energy sector. The ITC has approved tariffs, but it will be up the President Trump to set the rate; those of us in the industry are waiting to see what will happen, and many jobs are on hold pending the decision. It sounds like costs may go up 10% to as much as 40%. For more information visit:  https://pv-magazine-usa.com/2017/10/31/breaking-usitc-recommends-quotas-tariffs-on-crystalline-silicon-solar-imports/  

Renewable Energy (and related) news bites

             1912 Warning on coal cuasing climate change

 

QUOTABLE QUOTES:

  • When autumn darkness falls, what we will remember are the small acts of kindness: a cake, a hug, an invitation to talk, and every single rose. These are all expressions of a nation coming together and caring about its people.
    --Jens Stoltenberg
  • Designers want me to dress like Spring, in billowing things. I don't feel like Spring. I feel like a warm red Autumn.
    --Marilyn Monroe
  • The cost of solar energy has not been opened up because the oil industry does not own the sun.
    –Ralph Nader
  • The spring, summer, is quite a hectic time for people in their lives, but then it comes to autumn, and to winter, and you can't but help think back to the year that was, and then hopefully looking forward to the year that is approaching.
    –Enya
  • A kestrel can and does hover in the dead calm of summer days, when there is not the faintest breath of wind. He will, and does, hover in the still, soft atmosphere of early autumn, when the gossamer falls in showers, coming straight down as if it were raining silk.
    --Richard Jefferies
  • I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless!
    --Unknown
  • I prefer winter and fall, when you feel the bone structure of the landscape - the loneliness of it, the dead feeling of winter. Something waits beneath it, the whole story doesn't show.
    -- Andrew Wyeth
  • There has been a systematic repression of solar energy. It seems pretty funny to me that the government, if it is completely neutral--why wouldn't they pursue this far safer alternative of solar energy with the same intent that they pursue nuclear energy? Solar power is the last energy resource that isn't owned yet--nobody taxes the sun yet.
    --Bonnie Raitt
  • The problem with winter sports is that--follow me closely here--they generally take place in winter.
    --Dave Barry
  • If we had no winter, the spring would not be so pleasant: if we did not sometimes taste of adversity, prosperity would not be so welcome.
    --Anne Bradstreet