Tri-State and First Solar Sign Major Development Agreement

30-megawatt New Mexico solar facility among world's largest photovoltaic
projects

WESTMINSTER, Colo., March 24 /PRNewswire/ -- Tri-State Generation and
Transmission Association has entered into an agreement with Tempe, Ariz.-based
First Solar, Inc. to develop a 30-megawatt (AC), 500,000-panel solar
photovoltaic power plant in northeastern New Mexico. The "Cimarron I Solar
Project" is the largest photovoltaic project by an electric cooperative and
among the largest facility of its kind in the world.

"Tri-State is committed to renewable energy in our resource planning that
brings value to our member cooperatives across the four states we serve," said
Tri-State general manager and executive vice president Ken Anderson. "It's
noteworthy that Tri-State's first utility-scale renewable energy project will
be among the largest solar photovoltaic projects in the world."

A workforce of 120 to 140 construction personnel will be required during
construction of the facility, which is scheduled to commence by April 2010,
with the first portion of the system producing energy by August. The facility
is scheduled to be fully operational by the end of 2010.

"New Mexico has some of the best renewable resources and workforce in the
West," said New Mexico Governor Bill Richardson. "Tri-State's and First
Solar's investment in the state will create jobs and advance our agenda for
renewable energy."

The project will be located on a 250-acre parcel of land in Colfax County,
located between the towns of Cimarron and Springer, N.M. - within the service
territory of Springer Electric Cooperative, one of Tri-State's 12 New Mexico
member co-ops.

"Tri-State's development of the facility in our service territory benefits all
of its 44 members in meeting our consumers' renewable energy and environmental
goals," said David Spradlin, general manager of Springer Electric Cooperative.
"It's good to see that solar energy is finding a viable home within
Tri-State's generation resource mix."

The facility will provide enough energy to serve the equivalent needs of
approximately 9,000 homes and help Tri-State to displace emissions of carbon
dioxide. "This is a significant venture for Tri-State that meets several
objectives identified by our board of directors," said Anderson. "It further
diversifies our generation mix, it assists us in addressing carbon emissions
and it helps meet our members' renewable energy requirements."

The solar field will consist of approximately 500,000 2' x 4' photovoltaic
modules constructed with First Solar's patented thin film semiconductor
technology. First Solar will act as the engineering, procurement and
construction (EPC) contractor and will monitor and maintain the facility.

"We are excited to be part of Tri-State's first utility-scale PV power plant
and the largest PV power plant serving a cooperative in the United States,"
said John Carrington, First Solar executive vice president of marketing and
business development. "This 30-megawatt PV power plant is another important
demonstration of our ability to provide affordable, utility-scale solar
solutions."

Tri-State has contracted to purchase the electricity output from the facility
for a 25-year period. Financial and operational terms of the agreement are
confidential.

SOURCE Tri-State Generation and Transmission Association

Jim Van Someren of Tri-State Generation and Transmission Association,
+1-303-254-3132, jvansomeren@tristategt.org