Perpetual Power Installs a 416kW Solar Electric System on Budweiser Cold-Storage Facility

Markstein Sales Company goes solar with 2,240 Mitsubishi Electric PV modules
CYPRESS, Calif.--(Business Wire)--
Perpetual Power has announced the completion of a 416kW DC solar installation on
a Budweiser cold beer storage building in Contra Costa County, Calif. The
Markstein Sales Company, a family owned business operating since 1919, and a
distributor of Budweiser and other beverages, decided to install solar power on
its facility to reduce its energy costs while contributing to the protection of
the environment.

The solar system was designed and installed by San Francisco-based Perpetual
Power, LLC, and is the first system to use their new proprietary "Oasis" roof
mounting system. The system was designed with minimal connections and a low
weight per square foot to reduce stress on the building`s rooftop. The new
mounting system also passed a rigorous wind tunnel test to meet the requirements
in this area and ensure stability and safety.

Paul Townsend, founder of Perpetual Power, LLC, commented on the new
installation: "We continue to focus our solar installations on large commercial
buildings in California, including this new building for Markstein Sales
Company. We also focus on large agribusiness installations where solar power
makes a real difference in lowering energy bills for these companies."

The solar installation includes 2,240 185Wp Mitsubishi Electric polycrystalline
photovoltaic modules, made with 100% lead-free solder. Mitsubishi Electric
modules were chosen due to their reputation for outstanding quality and high
power output.

Antioch is in the eastern part of the Bay Area and typically experiences hot
summer temperatures which drives up the energy requirements of a cold storage
facility.

"A cold storage facility is an excellent example of a building that can gain
immediate benefits from solar power," said Gina Heng, general manager of
Mitsubishi Electric`s photovoltaic division. "Due to the high temperatures and
amount of refrigeration required for this facility, solar panels can help the
company shave off its most expensive tier it pays to the utility, resulting in
immediate savings."

The system will cover approximately 60 percent of the 110k square foot
building`s energy needs and is estimated by climatecare.org to produce
600,000kWh resulting in a annual savings of approximately $100,000. Based on
this estimation, the amount of carbon saved by installing the system is
equivalent to driving over 22 million miles over the 25 year life of the system,
or keeping 8,000 tons of CO2 from entering the environment.

About Perpetual Power

Bay Area-based Perpetual Power (P2) is organized to build, install and support
solar electric generators that deliver best-in-class production. The company`s
objectives include enhancing the triple-bottom line of their customers. P2 uses
the LEED process to design, manage and deliver projects working with customers
who share their interest in their approach to solar generator deployment. For
more information visit www.p2solarsolutions.com.

AboutMitsubishi Electric & Electronics USA`s Photovoltaic Division

Mitsubishi Electric is one of the world`s largest manufacturers and providers of
solar power technology. The company`s eco-friendly photovoltaic systems are used
throughout the world to bring clean, reliable energy to residences, businesses,
power generation plants, schools, factories and more. For more information visit
www.mitsubishielectricsolar.com or call 714.220.2500.

About Markstein Sales Company

Markstein Sales Company is a family owned business located in Antioch,
California. The company has been in business since 1919 and is a distributor of
Budweiser and other beverages. For more information please contact 925-755-1919.

Photos/Multimedia Gallery Available:
http://www.businesswire.com/cgi-bin/mmg.cgi?eid=5971170&lang=en

Mitsubishi Electric & Electronics USA
Jenean Smith, 510-666-0052
pv@meus.mea.com

Copyright Business Wire 2009