Success with Enhanced Geothermal Systems Changing the Future of Geothermal Power in the U.S.

  Success with Enhanced Geothermal Systems Changing the Future of Geothermal
                              Power in the U.S.

DOE, Ormat and GeothermEx Collaboration Produces Electricity Using In-field

PR Newswire

RENO, Nev., April 10, 2013

RENO, Nev., April 10, 2013 /PRNewswire/ --Ormat Technologies, Inc. (NYSE:
ORA), the U.S. Department of Energy and GeothermEx successfully produced 1.7
additional megawatts from an Enhanced Geothermal System (EGS) project inside
an existing wellfield in the U.S. This is the first EGS project to be
connected to the electricity grid. Using innovative subsurface technologies,
research and development teams stimulated an existing sub-commercial injection
well resulting in a 38 percent increase in power output from brine at Ormat's
Desert Peak 2 geothermal power plant in the Brady complex, Churchill County,


Support for the project included $5.4 million in direct DOE funding, $2.6 in
million investment from Ormat, and more than four years of collaborative work
with partners including Lawrence Berkeley National Laboratory, U.S. Geological
Survey, Sandia National Laboratory, University of Utah EGI, Temple University
and TerraTek.

By expanding existing hydrothermal fractures deep within the Earth's crust,
EGS technology enhances the permeability of underperforming wells, making it
possible to extract additional heat from a reservoir's rocks and inject
geothermal fluid at higher flow rates. Ormat's air-cooled power plants are the
technology of choice for EGS developments, as they don't consume water in the
conversion of energy into electricity; all the geothermal fluid is
re-injected, to be produced again after heating in the reservoir.

"This research and development project was conducted under a stringent induced
seismicity protocol developed by LBNL and the Department of Energy. We
achieved an increased injection rate up to 1,600 gallons per minute without
consuming or discharging water at the surface and using only existing
geothermal brine returned to the original aquifer," explained Lucien Bronicki,
founder and chief technology officer for Ormat. "Our objective in the Desert
Peak EGS project was to demonstrate that this technology can have a
significant impact on sub-commercial wells. This could enable us to use
unproductive wells to generate more power and new revenue."

"DOE's Geothermal Technologies Office is changing geothermal development in
the U.S.," Bronicki added.

About Ormat Technologies, Inc.
With over four decades of experience, Ormat Technologies, Inc. is a leading
geothermal company and the only vertically integrated company solely engaged
in geothermal and recovered energy generation (REG). The company owns,
operates, designs, manufactures and sells geothermal and REG power plants
primarily based on the Ormat Energy Converter – a power generation unit that
converts low-, medium- and high-temperature heat into electricity. With over
82 U.S. patents, Ormat's power solutions have been refined and perfected under
the most grueling environmental conditions. Ormat's flexible, modular
solutions for geothermal power and REG are ideal for the vast range of
resource characteristics. The company has engineered and built power plants,
which it currently owns or has supplied to utilities and developers worldwide,
totaling approximately 1600 MW of gross capacity. Ormat's current generating
portfolio of 575 MW (net) includes Brady, Brawley, Heber, Jersey Valley,
Mammoth, McGinness Hills, Ormesa, Puna, Steamboat, Tuscarora, OREG 1, OREG 2,
OREG 3 and OREG 4 in the U.S.; Zunil and Amatitlan in Guatemala; Olkaria III
in Kenya; and, Momotombo in Nicaragua.

Ormat's Safe Harbor Statement
Information provided in this press release may contain statements relating to
current expectations, estimates, forecasts and projections about future events
that are "forward-looking statements" as defined in the Private Securities
Litigation Reform Act of 1995. These forward-looking statements generally
relate toOrmat's plans, objectives and expectations for future operations and
are based upon its management's current estimates and projections of future
results or trends. Actual future results may differ materially from those
projected as a result of certain risks and uncertainties. For a discussion of
such risks and uncertainties, see "Risk Factors" as described inOrmat
Technologies, Inc.'s Annual Report on Form 10-K filed with theSecurities and
Exchange CommissiononMarch 11, 2013.

These forward-looking statements are made only as of the date hereof, and we
undertake no obligation to update or revise the forward-looking statements,
whether as a result of new information, future events or otherwise.

Ormat Technologies Contact:
Heidi Bethel
Public Relations Manager

SOURCE Ormat Technologies, Inc.

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