"With our new
flexibility in Houston, we expect to launch other new products and services in
the coming months.
The company provides a complete suite of energy products and services to
approximately 1. EnTCo prides
itself on providing cutting-edge, family-oriented , entertainment and education
simulators to customers in the Amusement/Theme Park, Museums, Zoo/Aquarium and
Family Entertainment Center markets.

tussock juniper

For more information or to sign up for Reliant's Renewable Energy Plan,
call 713-571-5700.

Environmental Tectonics Corporation's EnTCo Subsidiary's New Approach to Educational Immersion to Debut at San Diego Zoo

We look forward to
working with the San Diego Zoo leadership in the years to come.
ETC designs, develops, installs and maintains aircrew training systems,
public entertainment systems, process simulation systems (sterilization and
environmental), clinical hyperbaric systems, environmental testing and
simulation systems and related products for domestic and international
customers.com

Wild Earth is a registered trademark of Super X Studios.

pollutant untouched

"We
are glad to be able to offer an alternative product that supports renewable
energy in Texas.
Dave Mitchell, Director of Sales + Marketing for EnTCo, stated , "We are
honored that such a highly regarded organization like the San Diego Zoo sees
the value of Wild Earth(R) in conveying their conservation message and
engaging their visitors with new and fresh attractions.therideworks.com.

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HOUSTON, Reliant Energy now offers
Houston area residents who value clean energy 100 percent renewable energy
generated from wind power.9 million electricity customers, ranging from residences and
small businesses to large commercial, industrial, governmental and
institutional customers, primarily in Texas. The
uniqueness of EnTCo's experience development capability resides in its in-
house creative software development, and multi-disciplined engineering staff,
complemented by its complete turnkey capabilities - from concept to
construction.

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"We know that Houstonians care about the environment," Robb added.

careful shrubland

, Environmental Tectonics
Corporation (Amex: ETC) ("ETC" or the "Company") today announced that its
wholly owned subsidiary, Entertainment Technology Corporation (EnTCo), is
working with the San Diego Zoo to create a new high technology immersion
experience which will also educate guests about endangered species. For more information on Wild Earth or EnTCo's other ride
experiences, visit http://www.

declines illustrates

These strategically located
generating assets utilize natural gas, wind, fuel oil and coal. EnTCo has mastered both the technology
necessary to deliver a unique guest experience and the science required to
make it comfortable and enjoyable to a very broad audience demographic. 1203)
Fax: 215-357-4000

ETC - Internet Home Page: http://www.

careful savanna

For the average household in Houston using 1,500
kilowatt-hours a month, the extra cost would be equivalent to purchasing two
movie tickets or about $15 a month.

untouched grasslands

"
The Reliant Energy Renewable Plan provides customers with electricity
generated from 100 percent wind power.

aside tallgrass

Reliant has offered a renewable energy
option to customers outside of the Houston area since Texas opened its
electricity market to competition in 2002. SOUTHAMPTON, Pa.

untouched aside

This is the company's first residential product since the rules that
limited its ability to offer competitive products and services in its home
territory were lifted on January 1. It is environmentally friendly because
it creates no air pollution.

Contact: Duane D.

ecosystems wildflowers

"
Reliant Energy has a heritage of environmental stewardship that includes
numerous partnerships with community-based organizations.

untouched shrubland

Reliant Energy is one of the largest buyers
of renewable energy in Texas.
EnTCo has designed and engineered a number of cutting-edge simulation
attractions for major entertainment and education clients. We have based these forward-
looking statements on our current expectations and projections about future
events.

careful grasslands

The most recent award recognizes the company's work to restore
100 acres of tidal marsh at the San Jacinto Battleground State Historic Site.

aside untouched

The Renewable Plan costs slightly more than
Reliant's standard service.

grazing grassland

In keeping with these rules, Reliant Energy purchases renewable energy credits
for wind power to match the electricity consumption of those customers who
choose the Renewable Energy Plan. Reliant also serves commercial
and industrial clients in the PJM (Pennsylvania, New Jersey, Maryland)
Interconnection . Cost for the experience will be $6.

prairie declines

Customers who purchase this product contribute to the use of renewable
resources in Texas, under rules established by the Public Utility Commission. Marge Sheldon, Director of Merchandising
for the San Diego Zoo, stated, "We realize that older children and young
adults often need something more interactive to catch their attention.

tallgrass prairies

midewin ecosystems

The company is one of the largest independent power producers in the
nation with approximately 19,000 megawatts of power generation capacity in
operation or under contract across the U. The
interactive program asks guests to fulfill conservation-themed assignments
such as documenting the natural habitat of various wildlife and safely
returning to base camp while engaging them through realistic movement and
computer-generated imagery.00 per person. The Zoological Society, dedicated to the conservation
of endangered species and their habitats, engages in conservation and research
work around the globe.

arid grazing

"The right to choose is a key promise of deregulation, and we are pleased
to be able to offer customers in Houston a choice of products," said Jim Robb,
senior vice president, retail marketing, Reliant Energy. Based on the award-winning game title by Super X
Studios, the show is created through physically modeled animation.

prairies declines

In addition, Reliant has assisted with prairie restoration at the Armand Bayou
Nature Center where nearly 10 years of effort have resulted in the restoration
of more than 900 acres of native tall-grass prairie.
Reliant Energy, Inc."
Wild Earth (R) is expected to be available to guests to the San Diego Zoo
beginning in June of 2005.

This press release may include forward-looking statements within the
meaning of Section 27A of the Securities Act of 1933 as amended, and Section
21E of the Securities Exchange Act of 1934.

careful aside

"
This technological approach to educating guests about conservation is a
new approach for the San Diego Zoo. These forward-looking statements are subject to known and unknown
risks, uncertainties and assumptions about the Company that may cause our
actual results, levels of activity, performance or achievements to be
materially different from any other future results, levels of activity,
performance or achievements expressed or implied by such forward-looking
statements.

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Houstonians Can Choose Wind Energy From Reliant

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(NYSE: RRI), based in Houston, Texas, provides
electricity and energy services to retail and wholesale customers in the U.S.
Set to debut at the San Diego Zoo this summer, Wild Earth(R) is a
simulator experience that allows guests to feel as though they are riding
through African plains.

savanna declines

For the third time
in the last six years, the company was awarded the Coastal America Partnership
Award for efforts to restore critical fish and wildlife habitats along
coastlines . EnTCo
has worked with us to create a conservation-themed message which will educate
and thrill at the same time while helping to raise funds which support the
Zoo's mission.
The 100-acre San Diego Zoo is operated by the not-for-profit Zoological
Society of San Diego. The Zoological Society also manages the 1,800-acre San
Diego Zoo's Wild Animal Park (more than half of which has been set aside as
protected native species habitat) and the department of Conservation and
Research for Endangered Species (CRES), and is working to establish field
stations in five key ecological areas worldwide. In some cases, you can identify forward-looking statements by
terminology such as "may," "will," "should," "could," "would," "expect,"
"plan," "anticipate," "believe," "estimate ," "continue," or the negative of
such terms or similar expressions. Factors that might cause or contribute to
such a discrepancy include, but are not limited to, contract cancellations,
failure to obtain new contracts, political unrest in customer countries,
unfavorable results in litigation , general economic conditions, and those
issues identified from time to time in our Securities and Exchange Commission
filings and other public documents, including, without limitation, our Annual
Report on Form 10-K for the fiscal year ended February 27, 2004. Deaner, CFO Tel: 215-355-9100 (ext.etcusa.