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


 

Oasis Montana renewable energy newsletter for spring 2008

Page 1 Page 2 Page 3 Page 4 Page 5 Page 6

Page 4
Small Batteryless Grid Tie System with the Sunny Boy 700U Inverter

If you are wanting to add a small photovoltaic system to your home or business to help keep a lid on your utility bill -- or to just doing something to become ‘greener’, this may be the system for you!  It features a 700W grid-tie inverter, and it’s the smallest unit available for a utility-tied system
that will work without batteries. Here’s how the system breaks down.

Sunny Boy 700U Inverter                            $1459
Fan Kit                                                            $89
8 - Sharp 123W Solar Modules @ $675 ea. $5400
2 - 4X A-frame Roof/Ground mounts
w/Adjustable legs                                           $738
Square D AC and DC Disconnect                  $175
SOV Lightning Arrestor                                   $42
6 - 33” #10/2 Module Interconnects @ $18 each. $108
2 - Wire Kits @ $50 each                             $100
Total System                                             $8111

Not included are freight, installation, concrete (if ground mounted), wire nuts, roofing material/caulk, or site specific items necessary for the installation.

This system will provide ~3.5 kilowatts for five hours of full sun.

In this system, we specified eight of the Sharp 123W modules since that still keeps us under the 1000W max limit of the inverter’s 1KW rating, and the maximum power point window of the SB700U 200 inverter (100 to 200V) is a good match for eight Sharp 123’s (8 x 17.2V = 137.6V). In the worst case scenario, the maximum open circuit voltage output of the Sharp 123s (8 x 21.3V x 1.25 = 213V) won’t exceed the inverter’s maximum DC input voltage (which is 250V). When all is said and done, typically you get about ~75% of the nameplate wattage of a grid-tie system when the array is in full sun. There are several factors taken into account for typical system losses: dust, clouds, module power mismatch, temperature, wire loss, inverter inefficiency, etc. Under certain conditions (cold temperatures with bright sun), your solar array may make up to 25% more power than its nameplate rating--which helps counteract the system losses. The inverter may even limit (or ‘clip’) the power a little bit at such times.

The Sunny Boy 700U is the smallest, batteryless inverter available to us at this time. If you are looking for more output or a battery-based system for powering important loads in an emergency situation, call us and we will design a system to suit your project, or e-mail mark@oasismontana.com for more information.

Gary Reysa of Bozeman, MT, has a plan to cut household energy use in half. Why cut down personal energy consumption? There are lots of reasons, but some include putting a dent in greenhouse gases, creating less pollution, and saving money while doing the right thing. Mr. Reysa is a retired Boeing aeronautical engineer, and you can view suggestions about solar home heating, efficient lighting, phantom loads and other energy-saving projects at www.BuildItSolar.com.

Solar powered stock watering systems

lorentz submersible solar pumpsIf you have a water pumping need for your cattle, horses or other stock, give us a call with your project specifics and we’ll be happy to propose a system for your site. We offer different pumps for differing situations, but of late we have been selling a lot of the Lorentz line. All of the Lorentz submersible pumps and controllers are covered by a 2-year manufacturer’s warranty against defects in material and workmanship except the PS150 Boost pumps which have a 1 year warranty. Look over these Lorentz sample submersible pumping systems below and let us know if any of them will meet your needs. If not, we will design a system just for you.
 

Lorentz PS150 submersible centrifugal (shallow well, high volume)
1 Evergreen Spruce ES-190-RL 18V 190W solar module @ $990
1 single module top-of-pole mount structure @ $160 (2” ID SCH40 steel pipe required)
1 15’ array-to-controller wiring kit @ $38
1 Lorentz PS150 pump controller @ $275
1 Lorentz CSJ5-8 submersible centrifugal pump @ $895
1 Lorentz low water sensor @ $65
1 float switch @ $39

Equipment total = $2,462
On average this system will produce ~2,100 gpd when pushing against 50’ of head with 5 hours of full sun per day.

Lorentz PS1200 submersible helical rotor (deep well, low volume)
4 Evergreen Spruce ES-190-RL 18V 190W solar modules @ $990 each = $3,960
1 four module top-of-pole mount structure @ $663 (4” ID SCH40 steel pipe required)
1 15’ array-to-controller wiring kit @ $38Lorentz deep well solar pumps
1 Lorentz PV disconnect & junction box @ $148
1 Lorentz PS1200 pump controller @ $695
1 Lorentz HR-03H-2 submersible helical rotor pump @ $1,230
1 Lorentz low water sensor @ $65
1 float switch @ $39

Equipment total = $6,838
On average this system will produce ~600 gpd when pushing against 760’ of head with 5 hours of full sun per day.

The PS600 & PS1200 systems can also be powered by a 120/240 VAC generator or utility power during cloudy periods by using the Lorentz AC power pack @ $499. Note: these system costs do not include freight, installation, steel pipe, rebar, conduit, splice kits, wire nuts, or other site specific items necessary for installation.

Below is a chart with more Lorentz pumping systems; all systems are based on 5 hrs. of full sun, and come with wiring diagrams.

Lorentz system description Head (feet) Volume (gpd) Price
PS150 Boost-125 surface mounted rotary vane 132’ 590 $1,711
PS600 BADU Top12 surface mounted centrifugal 20’ 10,600 $6,328
PS200 submersible helical rotor 130’ 1,100 $3,616
PS600 submersible helical rotor 400’ 640 $5,355
 

Page 4

Oasis Montana renewable energy newsletter for spring 2008

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Greetings from our solar powered office!

In the event of a lengthy power outage, what are your critical loads?

With the presence of winter storms, hurricanes, tornados and aging grid infrastructure as part of daily life, many people are rethinking how reliable utility power really is, and we are getting more calls for back-up power for certain loads. Some of our customers just need to have power for charging their cell phones, Kindles, tablets or similar devices (and a couple of lights or a small TV for an hour or so); a small system for them might entail the following components:

System #1, small system: One ~300W solar module, 300W sine wave inverter, charge controller, 12V 55AH AGM battery, combiner enclosure with fuse, flush roof rack, panel output cable; $1449
For additional information on smallish, RV-type systems, visit http://www.oasismontana.com/RV_systems.html.

Other folks are concerned about losing their food if the grid goes down, so they’ll want to power their refrigerator and perhaps a freezer too. If your appliances are of more recent vintage, backing them up will cost much less than if they are older, less efficient models. An efficient refrigerator shouldn’t use much more than a kilowatthour a day, and a freezer might be in the ~1.5KWH range (but contact the manufacturer to be certain). A system to power those loads, plus a couple of lights, might entail these components:

System #2, medium system: (MS2812 Magnum inverter, 6 ~300W solar modules, 6X top of pole mount, Classic 200 MPPT charge controller, 4 L16 type batteries + cabling, battery monitor, interconnects, combiners and disconnects; $8700

If you don’t have city water, a common concern is powering your well pump. One can live without a lot of things but water is not one of them! And many deep well pumps are 240VAC; if you needed a backup power system to run your ½ HP 240VAC pump, say, one hour a day, plus extra power for a fridge and small loads, you might be looking at a system of this size:

System #3, large system: (Radian GS4048 – loaded, on a pre-wired power center that includes the charge controller, MATE3 system monitor, disconnects, etc., 12 – ~300W solar modules, 16 – L16 type batteries, pole mount, battery cabling = $14750

Costs do not include freight, installation, concrete footer for pole mounts, ground rod & clamp, and miscellaneous electrical widgets or wire runs.


       

Some people think solar modules are ugly – but I think they’re beautiful…and how wonderful it is to get electricity from sunlight!
And, you can enjoy saving money while saving the planet.


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Are you looking at a stock watering project this year? Or you want power for a pump if the utility fails? Or perhaps you have a pond to fill, or fruit trees that need irrigating? A remote cabin? Contact us for all your remote water pumping needs; visit www.PVsolarpumps.com for more information.


If your only concern if the power goes out is water and you have a, say, 1.5 HP 240VAC pump, we can now run many of those pumps array direct whenever the sun is shining. So if you need water for irrigation or stock, this new PicoCell system might be just what you need. The PicoCell, from SunTech Drives, is now part of our line of quality solar products, and we look forward to the next generation of their solar evolution as the newer and more robust water pump solutions come on board. Being powerless doesn’t mean being waterless any more! Depending on your water pump make and model, we may have a solution for those times when the power is gone but the need for water exists and the sun is shining. Three-phase water pumps and motors under 2HP manufactured by Berkley, Franklin, Flint, Goulds, Grundfos, Myers and Wailing are all great candidates for using the new PicoCell from SunTech Drive to run your water pump while the sun is shining and conventional power is out. Single phase pumps up to 1HP from these same manufacturers, including Sta-Rite are able to operate effectively also. Call for more information or to see if your pump will work with a PicoCell. 406-777-4321


Cows LOVE solar water pumping!


 

We offer the Grundfos, SunRotor, Dankoff and Lorentz pump line, from submersible to surface pumps. And we can power your 240VAC pump too! 406-777-4321 for tech support on pump systems.


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TAX SEASON is nearly upon us! If you had a solar power system installed and running by 31st December, 2017, you are eligible for a 30% tax credit of the cost of your solar module installation, less any state incentives or rebates. The 30% tax credit is still available through the end of 2019, so now the time is ripe for investment in the solar power system of your dreams. It is also available for certain types of solar thermal (hot water and space heating) systems. https://www.energystar.gov/about/federal_tax_credits/solar_energy_systems for the links about the federal tax credit; http://www.dsireusa.org for a state-by-state database of all renewable incentives; and https://www.irs.gov/pub/irs-pdf/f5695.pdf for the personal tax credit form. We are NOT tax experts, so when in doubt, consult your accountant or visit the IRS website at https://www.irs.gov/instructions/i5695?utm_source=Iron+Edison+Newsletter&utm_campaign=35a4413d23-EMAIL_CAMPAIGN_2018_01_22&utm_medium=email&utm_term=0_eaf26bfcab-35a4413d23-135295541&mc_cid=35a4413d23&mc_eid=6d3c772416

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OUTBACK POWER has a new charge controller, the FlexMax 100! This will allow for longer strings of solar modules and is fully NEC 2014 compliant with the Outback ICS Plus. It offers:

> a rainproof outdoor IP54/Type PR enclosure
> 100A output for up to 5KW of charging
> suitable for 24, 36 or 48V battery banks
> updated MPPT software algorithm means more power than other controllers
> up to 99% efficiency; LED indicators status display
> Five year warranty
> system configures quickly (MATE3S required)
> minimum battery bank size: 100ah
> had built in GFCI, field-replaceable cooling fan
> built in 128 days of data logging

You can view more information on this exciting new charge controller at http://www.outbackpower.com/outback-products/make-the-power/flexmax-series-charge-controllers/item/flexmax-100?category_id=531
Now available at a special introductory price of $1045 plus shipping (offer good til 4/30/18)

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NEW PRODUCT FEATURE

MNChinook 200 Wind Turbine Now Officially Available http://files.constantcontact.com/aaa32e00401/5cc9c46b-fd24-4c58-8538-64e359dee783.jpg
The Chinook 200 is now new and improved, a direct-drive micro-turbine designed for use in 12, 24 or 48 volt DC battery charging applications. Its attractive low-profile design, exceptional performance in low winds and low rotor acoustics, make this turbine the ideal choice for almost any application. It’s also very quiet, and mounts on a 1.5” Schedule 40 steel pipe.

The Chinook 200 can also work hand-in-hand with PV panels to ensure that power is being generated in all weather conditions; they can be charging the same battery bank, and are also suitable for marine use. The MidNite Chinook Diversion Load (CDL) is an integrated solution designed to prevent 12, 24 or 48 volt batteries from overcharging and is included with the Chinook 200. Compact and easy to install, the CDL incorporates a 300 Watt resistive heating element and controller board in a powder coated steel enclosure. $995 plus shipping includes its dump load controller. The output voltage is not field selectable and must be ordered for either 12V, 24V or 48V battery charging. Designed in Montana and still made in the USA, if you have good average wind speeds (10-12 mph+) you will find this to be an excellent addition to your battery charging scheme.

https://files.constantcontact.com/aaa32e00401/ad3a72d6-c36d-423c-b2ac-0e7328fddb78.png

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SOLAR PANELS: Despite the 30% import tariff on certain incoming solar modules, there are still a lot of good deals to be had.

NEO Solar Power 360W Mono 72 cell, Tier 1 module Vmp 39.01V Imp 9.23A 77” x 35”, pallet quantity is 30; minimum order quantity is 10. Cost is $309 per module in pallet quantities.

MightyMax Solar 150W 12V nominal modules, 24/pallet, Vmp 17.7V Imp 8.47A 39.’” X 39”, cost is $215 each in pallet quantities.

Hanwha QCells Black Q.Peak G4.1 295W Vmp 32.19V Imp 9.17A 65.7” x 39.4”, minimum quantity 4, cost $269 each

Canadian Solar MaxPower CS6U-325P (poly), 325W, Vmp 37V Imp 8.78A 77.2” x 39.1”, minimum quantity 4, cost $298 each

LG Mono 330E1C-A5 330W AC module (includes Enphase IQ6+Micro-inverter) 66.38” x 40”, minimum quantity 4, $555 each (max string 13 of these AC modules)

SolarWorld Plus SW300 Mono 300W Vmp 32.6V Imp 9.31A 65.95” x 39.4”, minimum quantity 4, $360 each

GLC 325W Multicrystalline Vmp 37.6V Imp 8.64A, 77” x 39.05”, 26 per pallet, cost is $269 each in pallet quantities.

We can also source a variety of other solar products including Trina, ET Solar, Yingle, Jinko, Csun, etc.
Many of our suppliers have a substantial fee for less than pallet quantities.

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Yes it’s finally SPRING and we are offering our gorgeous indigenous corn seed to you for the price of postage. An ounce is about 100 seeds and (since the P.O. considers this a ‘package’), cost to mail you about 1.5 ounces is $1.21

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No power is no problem with our gas refrigerators – now featuring the new economical HOMESTEADER line by Diamond

The manufacturers of the Diamond propane gas refrigerators are now offering a non-CSA certified offering available as a refrigerator/freezer unit in 19 cu.ft. and 21 cu.ft. capacities. While this means we cannot ship these to Canada, their cooling performance is not compromised in any fashion – in fact these have the same identical cooling unit as those installed in the Diamond gas fridges of the same size. These are some of the finest performing gas absorption units in the industry. Both sizes will be offered in the popular white, black and also stainless steel finishes, and they are less costly than most other models in the full size range. Here are the specifications:

19 cu.ft. Homesteader

 

 

 

 

Our customer Rick Freeman from southern California swaps out his old batteries for new to re-charge his PV system.
These 6V batteries weigh about 110 lbs. each.

 

QUOTABLE QUOTES:

  • “Spring won’t let me stay in this house any longer! I must get out and breathe the air deeply again.”
    --Gustav Mahler

  • "We have to prepare our cities for the increasing scarcity of resources by increasing their density and energy efficiency." -- Mathis Wackernagel

  • "Saying that you don't care about privacy because you got nothing to hide is no different than saying that you don't care about freedom of speech because you got nothing to say."
    --Edward Snowden

  • “April hath put a spirit of youth in everything.”
     --William Shakespeare

  • "In reality, studies show that investments to spur renewable energy and boost energy efficiency generate far more jobs than oil and coal."
    --Jeff Goodell

  • “Now every field is clothed with grass, and every tree with leaves; now the woods put forth their blossoms, and the year assumes its gay attire.”
    --Virgil

  • “At the end of the day, no amount of investing, no amount of clean electrons, no amount of energy efficiency will save the natural world if we are not paying attention to it - if we are not paying attention to all the things that nature give us for free: clean air, clean water, breathtaking vistas, mountains for skiing, rivers for fishing, oceans for sailing, sunsets for poets, and landscapes for painters. What good is it to have wind-powered lights to brighten the night if you can't see anything green during the day? Just because we can't sell shares in nature doesn't mean it has no value.”
    --Thomas Friedman

  • “Spring is the time of plans and projects.”
    --Leo Tolstoy

  • "As the saying goes, the Stone Age did not end because we ran out of stones; we transitioned to better solutions. The same opportunity lies before us with energy efficiency and clean energy."
    --Steven Chu

  • “Never cut a tree down in the wintertime. Never make a negative decision in the low time. Never make your most important decisions when you are in your worst moods. Wait. Be patient. The storm will pass. The spring will come.” --Robert H. Schuller

  • "Of all the questions which can come before this nation, short of the actual preservation of its existence in a great war, there is none which compares in importance with the great central task of leaving this land even a better land for our descendants than it is for us."
    -- President Theodore Roosevelt
     

Please feel free to share this newsletter – knowledge is power!

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