(OTC Bulletin Board: ENEI), today announced it has received a Notice of
Allowance from the United States Patent + Trademark Office for a new patent
for an integrated feedback control system that is designed to improve the
safety, reliability and lifetime of Proton Exchange Membrane (PEM) fuel cells.

commercializing hera

In response to market needs, PowerFlow was designed as a complete, fully
automated fuel cell system to be installed into industrial vehicles and
equipment for a variety of applications, such as material handling, ground
support equipment, powered access , turf care, construction, mining, forestry,
and utility vehicles.

EnerFuel Obtains Notice of Allowance From US Patent Office for Proprietary PEM Fuel Cell Control System Design

LAUDERDALE, Fla.enerdel .

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Nuvera Fuel Cells Europe is ISO
9001:2000 certified for "Research, Development, Design, Production and
Servicing of Fuel Cell Stacks and Fuel Cell Systems.
These risks and uncertainties could cause actual results or performance to
differ materially from any future results or performance expressed or implied
in the forward-looking statements included in this release.

fluidized commercializing

"
Nuvera is a global leader in the development and advancement of multi-fuel
processing and fuelcell technology., EnerFuel , Inc. The forward-looking
statements contained in this press release involve risks and uncertainties ,
including, but not necessarily limited to, the ability of Ener1 to
successfully develop and market proposed lithium battery, fuel cell and
nanotechnology-based products and services, the degree of competition in the
markets for lithium battery, fuel cell and nanotechnology-based products and
services , Ener1's history of operating losses, the lack of operating history
for the development stage Ener1 businesses, the need for additional capital,
the dependency upon key personnel and other risks detailed in Ener1's annual
report on Form 10-KSB for the year ended December 31, 2004, as well as in its
other filings from time to time with the Securities and Exchange Commission.

electrolysers hera

Safe Harbor Statement
This release contains forward-looking statements within the meaning of the
Federal Private Securities Litigation Reform Act of 1995 conveying
management's expectations as to the future based on plans, estimates and
projections at the time the statements are made.

quantify liters

, Nuvera Fuel Cells,
Inc ., an international developer of multi-fuel reforming and proton exchange
membrane fuel cell technology , today announced it will begin accepting orders
for its new 5 kW PowerFlow(TM) hydrogen fuel cell system at the 2005 Hannover
Fair taking place in Hannover, Germany from April 11-15. Ener1 Fuel Cell Subsidiary Expands IP Portfolio

FT.5%;
49% of Enerstruct, a Japanese lithium battery technology company in which
Ener1's strategic investor ITOCHU owns 51 %; wholly owned subsidiary EnerFuel,
a fuel cell testing and component company (http://www.

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With offices located in Italy and the USA,
Nuvera is committed to advancing the commercialization of hydrogen fuel cell
power modules for industrial vehicles and equipment and stationary
applications by 2007 , natural gas fuel cell power systems for cogeneration
applications by 2008, and on-board gasoline fuel processors and fuel cell
stacks for automotive applications by 2010.

todescato fluidized

Nuvera Announces Sale of New Fuel Cell System

Input from industrial end-users
in our target markets was critical in establishing the core features of the
product, such as high efficiency, modularity for packaging flexibility, and
completely serviceable stack technology.com); and wholly owned
subsidiary NanoEner, which develops nanotechnology-based materials and
manufacturing processes for batteries and other applications
http://www.

commercializing electrolysis

PowerFlow is being
offered to OEMs for use in stationary or mobile applications or to customers
who wish to test Nuvera's latest fuel cell technology. Both of these design features address critical factors for
the commercialization of hydrogen technologies in transportation applications . The company's interests include: 80.

reacting capillary

"PowerFlow is Nuvera's first commercial offering," said Gus Block,
Director of Marketing and Global Market Leader of Nuvera's PowerFlow product
platform . Without proper water regulation (a by-product of the
electrochemical reaction of a fuel cell), over drying of the fuel cell can
occur.

coval todescato

Other features of the fuel cell control system include the ability to
regulate the water concentration, which is critical to the long-term operation
of the fuel cell system.

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By understanding the market drivers
from all sides, we were able to design a system that meets the capital and
operational cost requirements of OEMs and end-users alike.r@nuvera . owns 19.

methanol sensitivities

"

Contact
Robert Derby
Director, Marketing Communications
Nuvera Fuel Cells, Inc.,
the fuel cell subsidiary of alternative energy technology company Ener1 , Inc.

mrt hydrogen

"Its design followed current industry product development practices
and is based on the results of field trials of our previous generation power
modules in North America, Europe, and Japan. The system is
also designed to prevent the drying out of the fuel cell membrane, which can
cause the fuel cell to quickly deteriorate and may lead to safety hazards,
including fire.
"EnerFuel has made great strides in developing its unique technologies and
know-how as demonstrated by this most recent patent allowance," said Kevin
Fitzgerald, Chairman and Chief Executive Officer of Ener1 .enerfuel.com.

capillary decentralized

quantify todescato

ener1.

fluidized sensitivities

It is a compact, flexible system that features proven
direct water injection technology, resulting in operational simplicity, fewer
balance-of-plant components than standard fuel cell systems, and high
reliability. When fuel cell membranes become dehydrated, holes or voids in the fuel
cell membrane can occur, resulting in the risk of fire or explosion from the
direct mixing of hydrogen and oxygen.

electrolysis electrolyzers

The EnerFuel control system is designed
to essentially eliminate this potential safety hazard.

methanol hera

com

"The company is
focused on delivering fuel cell manufacturers and the industry at large
innovations that will advance the safety and performance of their fuel cells,
and thus help make hydrogen energy a commercial reality sooner. The
feedback system controls the flow of fuel and oxidant gases required to
maintain and maximize the electrochemical reaction of the fuel cell stack
under varying current loads.

hydrog mrt

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Application pre-
approval is required.com ) is an alternative
energy technology company.5% of EnerDel
(http://www.

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In addition, PowerFlow incorporates metallic bipolar plates to
ensure low production costs and resistance to shock and vibration . Ener1 undertakes
no obligation to publicly update or revise any forward-looking statements,
whether as a result of new information, future events, or otherwise.

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hydrog sensitivities

Company's first commercial offering -- a 5 kW hydrogen fuel cell power module
-- now available to OEMs for use in real-world conditions; sale to begin at
2005 Hannover Fair

MILAN / CAMBRIDGE, Mass .
The integrated feedback control system is designed to allow PEM fuel cells
to operate more efficiently under variable loads, such as those encountered
during the braking and accelerating of a fuel cell vehicle."
EnerFuel's control system design incorporates a novel self-regulating
feedback mechanism that supplies hydrogen and air to the anode and cathode of
the fuel cell stack by using a system of pressure regulators and pumps.

About Ener1
Ener1, Inc (OTC Bulletin Board: ENEI) (http://www.com), a lithium battery company in which Delphi Corp.

todescato electrolysers

Tel: +1-617-245-7571
Cell: +1-508-254-9668
Email: derby.ener1.