Nevada Geothermal Power Inc.
TSX VENTURE : NGP
OTC Bulletin Board : NGLPF

Nevada Geothermal Power Inc.

May 30, 2006 09:15 ET

Nevada Geothermal Power Inc.: GeothermEx Estimates Minimum 40 MW, Most Likely 60 MW Potential at Crump Geyser, Oregon

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - May 30, 2006) - Nevada Geothermal Power Inc. (NGP) (TSX VENTURE:NGP)(OTCBB:NGLPF) today announced the results of an independent review of the Crump Geyser Geothermal Project by GeothermEx, Inc. of Richmond, California which provides a preliminary estimate of the minimum and most likely megawatt (MW) capacity of the Crump Geyser geothermal resource.

The GeothermEx results are contained in a report entitled "Assessment of the Crump Geyser Geothermal Project, Lake County, Oregon" dated May 1, 2006.

Summarizing directly from the report:

- "Nevada Geothermal Power Company, a wholly owned a subsidiary of Nevada Geothermal Power Inc. (NGP) holds approximately 7,200 acres (11.2 square miles / 29 square kilometers) of geothermal leases in the area of the thermal anomaly. These are divided into a "southern geothermal zone", which includes the Crump Geyser anomaly, and a "northern geothermal zone", which encompasses a separate set of warm springs. The Crump Geyser geothermal system is expressed by hot springs with temperatures to 78 degrees C, which extend about 5 km along the western edge of Warner Valley, at the eastern front of the Warner Mountains, in Lake County, Oregon.

- "Using Monte Carlo simulation, we estimate the potential megawatt (MW) capacity of the Crump Geyser reservoir to have a minimum value of 40 MW (90% probability) for 20 years and a most likely value of 60 MW for 20 years. This capacity estimate is based on a volumetric estimate of heat in place which assumes an area of 5.4 to 16 km2 (most likely 10.7 km2), a reservoir thickness of 760 to 1,680 m (most-likely 1,070 m), and average reservoir temperature 140 degrees to 160 degrees C (most-likely 150 degrees C).

- "The area is at the northeastern end of the Basin and Range geologic province. Rocks exposed at the surface and likely to host the thermal reservoir at depth are volcanics that are at least a million years old. The thermal anomaly is accordingly expected to be the result of deep circulation (of groundwater) in a region of elevated heat flow.

- "A conceptual model of the resource suggests that the deep source fluid probably migrates up-dip, moving to the NE, within fractured volcanic strata of the gently SW-dipping Warner Mountains block (i.e. the hot water comes to the Crump area from the SW). The depth of these strata is unknown, but probably at least 1.5 to 2 km. This water migrates NE at depth until it reaches the steeply-dipping range-bounding fault, on the west side of Warner Valley, and steeply-dipping NW-trending cross-faults. Permeability in the range-bounding fault zone, probably enhanced by the cross-faults, provides conduits for a rapid ascent to the surface. Some of the deeply migrating water may also cross the bounding fault and cross-faults and reside at commercially drillable depths beneath the valley, particularly along the west side."

Following a corporate review of our exploration results to date and the positive analysis by GeothermEx, Inc., NGP intends to advance the Crump Geyser project through reservoir drilling, testing and confirmation, project feasibility studies and ultimately electrical power production.

Nevada Geothermal Power Inc. is a renewable energy company exploring and developing geothermal projects in the United States to provide electrical energy that is clean, efficient and sustainable. NGP is committed to the geothermal industry and currently owns a 100% leasehold interest in the Blue Mountain, Pumpernickel, Black Warrior projects in Nevada and the Crump Geyser Project in southern Oregon.

Nevada Geothermal Power Inc.

Brian D. Fairbank, P. Eng., President & CEO

This Press Release contains certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. We have tried, whenever possible, to identify these forward-looking statements using words such as "anticipates", "believes", "estimates", "expects", "plans", "intends", "potential" and similar expressions. These statements reflect our current belief and are based upon currently available information. Accordingly, such forward-looking statements involve known and unknown risks, uncertainties and other factors which could cause the Company's actual results, performance or achievements to differ materially from those expressed in or implied by such statements. We undertake no obligation to update or advise in the event of any change, addition, or alteration to the information catered in this Press Release including such forward-looking statements.


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