Small-scale turbines get praise in Alaska villages
by Alex DeMarban / The Tundra Drums
8 months ago | 4600 views | 17 17 comments | 18 18 recommendations | email to a friend | print
Stan Jimmy of Emmonak on the lower Yukon River helps attach a Skystream wind turbine to a 42-foot steel pole during a class in Anchorage, Alaska designed to show rural Alaskans that they can benefit from renewable energy on Friday, Dec. 11, 2009. Two western Alaska villages spinning power from small wind turbines say they re saving thousands of dollars a year. Alex DeMarban/The Tundra Drums
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ANCHORAGE, Alaska - Two Western Alaska villages spinning power from small wind turbines say they're saving thousands of dollars a year.

"I'm still amazed at what they're doing," said Gerald Kosbruk, president of the tribal government in Perryville on the southern Alaska Peninsula.

However, the head of the largest utility in rural Alaska, Alaska Village Electric Cooperative, cautioned that such wind turbines have their drawbacks.

The tribally owned utility in Perryville installed 10 Skystream turbines last year for about $100,000, said Kosbruk.

In April last year, after the turbines had been up for 5 months, the utility crunched some numbers. The turbines had saved an estimated $9,143, he said.

And the turbines didn't operate at full power during that period.

That's because workers often switched off individual turbines to "fine-tune" them to improve their performance, he said.

In the months since, the turbines, situated behind a fence near the Pacific Ocean, have operated at full production, so the savings have likely improved, he said.

Also, the village has had a lot of wind this year, so that's likely helped too, he said.

"It's blowing pretty good out there today," he said.

Best of all, the village is no longer running out of diesel fuel for the power plant.

The village of 130 doesn't have much fuel storage, so every six months the village ran out. The utility would fly in limited quantities until the next barge arrived with a large shipment.

The fly-in fuel could cost more than $10 a gallon, three times the barged-in fuel, Kosbruk said.

The tribal government, using federal funds for tribes, considered buying the turbines for individual houses since Perryville doesn't have many. But the utility would have lost money, he said.

By making the turbines part of the utility, everyone should benefit by receiving cheaper electric costs in the long run, he said.

The small turbines were the subject of a renewable energy classes organized by the Yukon River Inter-Tribal Watershed Council in Anchorage last week. A dealer who sells them taught a group of Western Alaska villagers how to build them.

The package - with a 2.5 kilowatt turbine, three-blade propeller, steel pole and cables today costs about $11,000 to install in the Anchorage-area, said Kirk Garoutte, owner of Susitna Energy Systems and the man who helped install Perryville's turbines.

The cost would rise with rural transportation costs, he said.

They're simple to install, and within a few hours the students had bolted the turbine to a 42-foot steel pole and raised the system with a truck winch.

Students from villages like Marshall on the lower Yukon talked excitedly about how they'd like to see 10 of the Skystreams in their village, like Perryville has.

Operation limitations

The head of the largest utility in rural Alaska, Meera Kohler, said the turbines can help some villages.

But Alaska Village Electric Cooperative can allow only a limited number of individuals to operate them in villages they serve, she said.

For example, the village of Marshall, which has about 420 residents, could only have two turbines tied to AVEC's grid.

More than that, and flickering would cause problems for others, including clocks that would need resetting.

Proponents of the small wind turbines call those problems insignificant, she said.

"But people experiencing those issues come unglued," she said. "They think it's our problem."

Also, remembering rural wind turbine projects that went belly up in the 1980s, Kohler also cautioned that while the turbines look attractive on paper, unexpected maintenance and equipment costs can quickly eat up any savings.

Shaktoolik in Northwest Alaska uses two Skystream turbines to help power the corporation building in the village of 223, said Fred Sagoonick, general manager of the Native corporation.

The corporation drew on its savings to buy two Skystreams to help power the corporation's building in the village of 223.

They're saving hundreds of dollars a month at the building, which includes a grocery store and offices on the second level.

Sagoonick, an AVEC board member, worked out an agreement with AVEC that allows it to sell power to the utility for credit, he said.

It doesn't sell much, since the building consumes nearly everything the turbines produce, he said.

The turbines started spinning two years ago, but one suffered problems with the microprocessor and needed to be repaired.

For the last year, "they been running awesome," Sagoonick said.

Even with the turbines, the corporation's October electric bill was $812.

But that's roughly half of what it used to be.

Two years ago in October, without the turbines, the building used more than twice the electricity, he said.

"It will be awhile before we see payback, but it does free up a few hundreds of dollars a month to help us keep up with other bills," Sagoonick said.

comments (17)
« JayYeager wrote on Tuesday, Dec 29 at 10:21 AM »
A few things of note:

Perryville is not a member of AVEC but rather has their own utility as part of a self organized native corporation. They are not therefore subject to the restrictions of AVEC policy.

The penetration rate of the wind system in Perryville is less than 20% of the total utility generating capacity and well below the threshold of the governor regulation capability of the diesel generators. Adding a kilowatt of wind power to the high voltage distribution of the village is “like” decreasing the load on the diesel generator by one kilowatt and thereby lessening the demand for fuel.

The wind turbines installed in Perryville, Shaktoolik (and elsewhere throughout Alaska) are Southwest Windpower Skystream 3.7s. They are not “one off” machines. The Skystream has been designed intentionally for inexpensive mass manufacturing and very wide scale deployment. They are well proved in tough operating environments.

Even so, occasionally problems may occur. In a situation similar to the problem that occurred in Shaktoolik, a repair part can be sent to a remote Alaskan village by US Mail- an important logistical advantage, and replaced by local help, with basic hand tools for very little time and expense. If one turbine in a group of machines has a problem, the remaining machines go on working without a severe loss of generating capacity. If a comparable single large wind turbine is doing all the work, and it fails, there is just no built in redundancy. Bigger turbines need maintenance too and they do break down occasionally. (Getting large wind turbines serviced and operational in rural Alaska has reputedly been difficult in the past.) At least multiple small wind machines are do-able. The village of Perryville did most of the work themselves by employing their own people with equipment they already own. They performed the entire construction and commissioning project and only needed some guidance with the design and integration. To their credit, the village of Perryville has succeeded with implementing wind energy into their power system by will and determination and to their benefit they will realize savings because they own the system and were willing to do the work themselves.

The problems of voltage flickering and frequency excursion (clocks that speed up and slow down) is largely attributed to common inductive type generators. They require “excitation” of the rotor field to create flux and consequently push the voltage source (grid) when transitioning in and out of generation (as the wind speeds up and slows down). The Skystream is a permanent magnet alternator, self exciting wind turbine with an inverter based power conversion process within the turbine itself. It makes very clean power as evidenced by independent UL and IEEE certification. Compared to inductive wind turbines permanent magnet alternator wind turbines can help stabilize weak grid conditions. With the Skystream wind diesel hybrid system, the diesel generator has the responsibility to maintain constant frequency (by governing engine rpms) and the inverter within the turbine matches that frequency- good or bad.

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« Pearl=W wrote on Monday, Dec 28 at 11:16 PM »
Glacierwolf - good input, especially about using several alternative sources. My solar panels do themselves proud, and provide all the power I need most of the time, for 8 months of the year. And it's my wind chargers and battery banks that get me through the other 4 months, even here in the Interior. Everything goes through regulators into the deep-cycle battery banks, and appliances that aren't 12v, run off pure sinewave inverters. No flickering, no interference, no problems, almost zero maintainence, except for the batteries.
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« Glacierwolf wrote on Monday, Dec 28 at 08:36 AM »
I am an electronics engineer with experience installing solar panels and alternative power all over Alaska from Cape Decision to Katovik.

2500 watts is just a single 25 amp circuit breaker. A piece of equipment called a 'grid tie unit' or GTU is used to easily interface alternative energy to they local grid. They are not cheap - but - will handle more than just a handful of windmills.

Is it me, or, is the writter of this article just skeptical of this technology? The article is quick to bring up all the drawback of alternative energy.

In Alaska - you never use just one form of Alternative Energy. On the coastline, you would use both solar panels and wind generation. On a nice sunny day with no wind the solar panels kick in, on a cloudy windy day the windmill kicks in. The facility would have several dozen deep cycle batteries to carry over on days of no generation.

I cannot think of a single village that would not benefit from a wind farm.

I put the first solar panel on our home in 2002 and now we have 7. Today, in Dec it doesn't even generate a trickle charge - but June, July, August we get 300kw from them, and March, April, May, Sept, we get 45kw to 100kw. They will payback in 2015 and have a manufacturer's warranty of 25 years and an estimated operational life of 45 to 60 years. No moving parts.

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« ak_bear wrote on Saturday, Dec 26 at 12:35 PM »
Many of these home built designs will work fine but there are drawbacks to. Much of the expense of modern wind turbines are in making them pull power out of marginal breeze as well as be effective in storm force wind. Also the ability to shut itself down when hurricane force winds blow is very desirable. Without that a windmill will either self destruct or burn out the electrical components. When you pay for a system designed to automatically handle all of the elements thrown at it you are paying for increased reliability, getting power from almost any wind speed and the need for minimal maintenance.
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« longhornak wrote on Saturday, Dec 26 at 11:54 AM »
Just budget some of those savings for maintenance costs, and this should work great.
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« JeffDeWitt wrote on Saturday, Dec 26 at 09:18 AM »
Most places these windmills make very little economic sense and are far more about someone making a statement about how green they are than useful power sources.

However in remote places like these villages, especially if they generally have a steady wind, they are an excellent idea.

It looks like there are some control problems though, there is no good reason why a bunch of these things can't be connected together to feed a village or a grid, and if lights are flickering and clocks acting up there is something wrong with the system.

My CARS, including a 50 year old Studebaker, have solid enough electrical systems so lights don't flicker and the clocks run right, so there is no reason why a 21st century power system can do the same.

For some real cost savings what's wrong with an Airomotor connected to an alternator feeding batteries and inverters? Or the vertical turbines they have these days that seem to work very well?

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« ak_bear wrote on Saturday, Dec 26 at 08:27 AM »
As for flickering, inverter technology could fix that, either at the source or for just a few hundred dollars it could be installed at the electrical panel in the house. With a battery used with the inverter they can even run it as a UPS. Definitely small problems when compared with $10 a gallon diesel fuel.
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« murphinak wrote on Saturday, Dec 26 at 08:08 AM »
Larmex, WOW, maybe you should re-read the article.

"For example, the village of Marshall, which has about 420 residents, could only have two turbines tied to AVEC's grid.More than that, and flickering would cause problems for others, including clocks that would need resetting." That should explain why there are only a few jobs available for the operation per village.

Also "Since when was electric part of a "Traditional" life style? " was just an ignorant statement. Sagoonick comes right out and says it would free up money for other bills, which also are not traditional. Get a damned grip; its just people trying to make it, like everyone else. Why so angry?
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« Larmex wrote on Saturday, Dec 26 at 05:52 AM »
WOW, talk about a shotgun artical.

Having to reset your clock is a terrable price to pay for power.

Having to FLY fuel in because they ran out sounds like someone needs a few math lessons on how to figure fuel useage.

(Alaska Village Electric Cooperative can allow only a limited number of individuals to operate them in villages they serve)Please explane why this is?Is someone claiming they own the wind?

Saving money with wind and solor power is an Al Gore, you save so I can spend, feel good idea. They will never replace oil/coal for producing dependable, constant power. At least not untill we get over the "nuke meltdown" mentality. Building a few dams and some nuke plants will HELP keep the cost down, but making electric will always cost money and keep going up.

Why is it the wind/solar power people always forget about maintance? Repair costs? Shipping costs? Tie in equiptment and controls? How many complants are there about "those ugly towers" and look at all the birds they are killing?

How many law suits will be filed for those UGLY thing blocking my view???

Since when was electric part of a "Traditional" life style?

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« ftknox wrote on Friday, Dec 25 at 10:58 PM »
I remember back in the mid 80's on the Oregon coast just above Whisky Run there were about 25 or 30 of these wind mill thingy's. You could hear them for miles and miles even as you walked on the windy beach. There were a few residents along that part of the beach and low and behold the wind gens just started being taken apart and soon there were just pads where they perched... I am a firm believer in conservation for sure with heating oil at $3.00 a gal (unless you live in juno) and with wood at the same price per cord we really should put a lot of wind mills on every hill top.... ok on every cell tower will work... Hey!!!!!! Anyone wanna invest in hearing protection??? I rest my case and will just bite the bit and pay the $3.00 a gal.... my 2cents
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« justasking wrote on Friday, Dec 25 at 04:25 PM »
oh y lord...having to reset your clock..what a problem..of course I still have the old timey clock that you must wind everyday...now would that kinda of clock be affected by the flickering?

bring on the rolling blackouts...

how could Amerikans live like that?

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« KnotFunny wrote on Friday, Dec 25 at 03:08 PM »
Why is it so many people discount anything that does not run on oil. So what, lights flicker. They flicker too right before they run out of diesel. There are alternatives to oil. Might there be some "differences"? Yes. Many are for the better.
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« TwoYaks wrote on Friday, Dec 25 at 02:40 PM »
Flickering? I can't say that's much worse than it is now, where power outright dies on a regular basis.

The thrown-together electric grids in a lot of villages need work to make them reliable and cheaper, no matter whether people are using wind or diesel in the future.
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« mileder wrote on Friday, Dec 25 at 12:20 PM »
Sounds like a 3-5 year payback. Can't ask for much better than that.
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