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Air Force to quadruple solar energy production

Posted 10/15/2010 Email story   Print story

    

10/15/2010 - TYNDALL AIR FORCE BASE, Fla. (AFNS)  -- For nearly three years, a 14.2-megawatt solar array spanning 140 acres at Nellis Air Force Base, Nev., has held the title of the largest renewable-energy project in the Air Force.
Hundreds of media outlets have published stories featuring the vast display of solar panels, and President Obama visited the site last year. Now, Air Force engineers are set to outdo that achievement with plans to build three new solar arrays by 2013 that are as big as or bigger than the current Nellis project.

In addition to Nellis AFB, officials at Davis Monthan AFB and Luke AFB, both in Arizona, are planning expansive solar arrays.

Davis-Monthan officials awarded SunEdison a solar photovoltaic utility contract in September. They plan to purchase electricity from a 14.5-megawatt photovoltaic solar array to be constructed, designed, owned, operated and maintained by SunEdison on 130 acres of under-utilized base property. Engineers expect the array to deliver 35 percent of the energy needed to operate base facilities.

"Several years of industry and government teamwork were required to bring this renewable-energy project to this point," said Col. John Cherrey, the 355th Fighter Wing commander. "The use of emission-free solar power to reduce our dependence on fossil fuels, as well as long-term savings on electricity costs, is a great benefit to the base."

Luke officials have teamed up with Arizona Public Service Company to build a 15-megawatt solar array on 100 acres of under-utilized base property. The project could produce enough energy to satisfy 50 percent of the base's energy needs and save up to $10 million on utility bills over 25 years, according to Lt. Col. John Thomas, the 56th Civil Engineer Squadron commander.

While Davis-Monthan AFB and Luke AFB soon could have the largest renewable-energy plants in the Air Force, with 14.5 and 15 megawatts respectively, the distinction may be short-lived. Air Combat Command and Nellis AFB leaders have plans to construct a 17-megawatt phase-two project in 2012 to add to the 14.2-megawatt array built in 2007.

"The Air Force continues to aggressively pursue cleaner sources of energy," said Maj. Gen. Timothy Byers who, as the Air Force Civil Engineer, is responsible for overseeing all Air Force facilities. "Sustainable installations provide an operational advantage to our force and, needless to say, we are excited by the momentum in this arena."



tabComments
10/22/2010 5:08:12 PM ET
The large scale arrays that are described in this article are funded by third party investment not Air Force funds. The business case for the Air Force looks at the current cost of electricity in relation to the cost of electricity from renewable sources. We pursue projects where the overall costs to the Air Force are lower over the life span of the project than if we remained on the utility grid at the tariff rates. Ken Gray, Energy Rates and Renewables Branch Chief, Air Force Facility Energy Center.
Ken Gray, Air Force Civil Engineer Support Agency
 
10/19/2010 3:56:08 PM ET
For me and I think the USAF it is the independence from the electrical grid that this large array will supply. Yea sure it cannot supply all of the base needs and certainly none at night. But if the electrical grid goes down in the daytime on a clear day at least some part of the base that had no electricity before might still have it if things are routed and wired correctly. And for home use the federal government has a very good tax credit incentive of 30 percent up to a 25000 dollar equipment investment. Here in Louisiana it is even better with another 50 percent kicked in by the state as a tax credit. Thus 80 percent of your up front investment costs are paid for which makes the return on investment occur much more quickly.
Rick Westerfield, Barksdale AFB Louisiana
 
10/18/2010 3:49:13 PM ET
Many good points/questions presented. I think at this point in the game the installation cost doesn't warrant the expenditure. However like many other technologies I suspect costs will drop if this technology grows. I think PB makes a good baseline observation. If we don't look to renewable energy we are going to pay the consequences.
Paul Walmsley, Wichita Falls
 
10/18/2010 2:19:51 PM ET
As a former MSG Commander I can tell you that utility bills are a huge expense for our Air Force especially if one considers that our hangars and other facilities were built in a largely energy inefficient period around 1930 to 1960. We need to explore more of this. And yes there is an initial investment cost but the payback period is only 25 years if you believe 25,000 today is worth more than 25,000 down the road and if you believe the price of oil will not go up.
Jim H retired colonel, Omaha NE
 
10/18/2010 1:07:33 PM ET
The cost question is academic compared to the future availability of the resource. Using renewable energy sources for base operations means we're burning less coal natural gas etc. And once the non-renewable resources are gone there's no getting them back.
PB, US
 
10/18/2010 12:14:06 PM ET
Interesting that they don't mention the cost of installing this solar system so that everyone see what the real savings would be.I checked into solar power for my home and the cost of installing the system was 75,000. With my electric bills running 3,000 a year it would take 25 years to pay for the system before I'd see any savings. Not very cost efective IMHO.
R, Nellis AFB
 
10/18/2010 1:27:07 AM ET
As I understand it the Nellis array and probably the future ones as well did not and will not cost the Air Force or the tax payer anything. The Solar company set the array up free of charge with a guarantee of a specific amount of time that the Air Force would then purchase the produced energy from them at a set cost which is substantially lower than the local utility would have charged otherwise not to mention the strain on the power grid. Way to go Air Force
Aaron, Japan
 
10/15/2010 1:36:31 PM ET
I would be interested in knowing the overall costs of the arrays. While 10 million in savings over 25 years is impressive for the one site it is not clear what the true return on investment is for the arrays.
Teresa Turner, Washington D.C.
 
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