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Phoenix water treatment goes solar



                      Phoenix water treatment goes solar

SunPower solar system to save more than $4 million over 20 years

PR Newswire

SAN JOSE, Calif., Jan. 15, 2013

SAN JOSE, Calif., Jan. 15, 2013 /PRNewswire/ -- The city of Phoenix's Lake
Pleasant Water Treatment Plant has started working directly with the sun to
help produce the energy needed to operate the plant, which produces 15 billion
gallons of tap water each year.  A 7.5-megawatt high efficiency solar power
system, which was designed and built by SunPower Corp. (NASDAQ: SPWR) and is
the largest such installation on city property, is expected to generate 70
percent of the plant's electrical power needs.  A total of 22,936 solar panels
are being used to save approximately 15 million kilowatt-hours (kWh) each
year, resulting in savings of approximately $4.2 million over the next 20
years as compared to conventional electricity. 

(Photo: http://photos.prnewswire.com/prnh/20130115/SF43022)

According to estimates provided by the U.S. Environmental Protection Agency,
the system is expected to offset the production of more than 9,000 tons of
carbon dioxide per year, which is equivalent to removing almost 35,800 cars
from Arizona's roads over the next 20 years.

"With more than 300 days of sunshine each year, Phoenix is a natural for using
solar power," said Phoenix Mayor Greg Stanton.  "The Lake Pleasant Water
Treatment Plant project is the latest in a series of solar initiatives
utilized at various city locations to increase the city's commitment to
sustainable energy development."

"This is another great example of the progressive thinking that enables
Phoenix to keep customer costs as low as possible," said Councilman Bill
Gates, chairman of the city's Finance, Efficiency, Innovation and
Sustainability Subcommittee.  "City solar projects are currently generating 13
megawatts of electricity through solar energy, or enough to power about 2,600
homes annually."

"This SunPower solar system will reliably produce clean energy for years to
come," said Howard Wenger, SunPower president, regions. "SunPower's technology
will ensure that the system delivers energy over the long term, reducing
operational expenses significantly with no upfront expenditure."

According to the city of Phoenix, a SunPower solar system also generates
5.4-megawatts of power at Sky Harbor, and 100-kilowatt systems are in place at
the Phoenix Convention Center and the Burton Barr Central Library, both with
Leadership in Energy and Environmental Design (LEED) Silver certified
facilities.

At the Lake Pleasant Water Treatment Plant, a 6-megawatt ground-mounted solar
array features a SunPower T0 Tracker® system, which positions solar panels to
follow the sun's movement during the day, increasing sunlight capture by up to
25 percent over conventional fixed-tilt systems, while significantly reducing
land use requirements.  The SunPower T10 Solar Roof Tile was used for a
1.5-megawatt array atop a reservoir.  

Phoenix is financing the system through a solar services agreement with
SunPower.  Under terms of the agreement, Wells Fargo owns the system that
SunPower designed, built, and will operate and maintain.  The city will buy
the electricity at rates that are competitive with retail electricity,
minimizing the effect of rising electricity costs with no capital investment.
The renewable energy credits (RECs) associated with the system will be
transferred to Arizona Public Service (APS) in fulfillment of the state's
renewable energy standard.  The project was facilitated in part by APS's
Renewable Energy Incentive Program, which offers financial incentives to
customers that help to offset up to 40 percent of the costs of installing
solar energy.

About the Phoenix Water Services Department
The City of Phoenix's Water Services Department is more than 100 years old and
treats and distributes tap water to 1.5 million customers over approximately
540 square miles.  Water Services also manages Phoenix's sewer system, and
treats wastewater for 2.5 million residents in five Valley cities.  Water
Services infrastructure includes 7,000 miles of water lines, 5,000 miles of
sewer lines, seven treatment plants, 50,000 fire hydrants and 90,000
manholes.  Phoenix's water and sewer rates are among the lowest of
comparable-sized cities nationwide.  Phoenix's tap water supply is in very
good shape due to decades of planning and multiple water sources.  Phoenix
performs more than five million tests and measurements each year to meet or
surpass stringent water quality regulations. The city reuses nearly all of its
wastewater on crops, wetlands and energy production.  Visit phoenix.gov/water.

About SunPower
SunPower Corp. (NASDAQ: SPWR) designs, manufactures and delivers the highest
efficiency, highest reliability solar panels and systems available today.
Residential, business, government and utility customers rely on the company's
quarter century of experience and guaranteed performance to provide maximum
return on investment throughout the life of the solar system. Headquartered in
San Jose, Calif., SunPower has offices in North America, Europe, Australia,
Africa and Asia. Visit sunpowercorp.com.

SunPower is the registered trademark of SunPower Corp. All other trademarks
are the property of their respective owners.

SOURCE SunPower Corp.

Website: http://www.sunpowercorp.com
Website: http://phoenix.gov/water
Contact: Ken Kroski, City of Phoenix, +1-602-534-1209, ken.kroski@phoenix.gov;
or Ingrid Ekstrom, SunPower Corp., +1-510-260-8368,
Ingrid.ekstrom@sunpowercorp.com
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