In First, Electric Vehicle-to-Grid Technology Sells Power to PJM Power Grid

  In First, Electric Vehicle-to-Grid Technology Sells Power to PJM Power Grid

 – Milestone by University of Delaware, NRG Energy eV2g project celebrated by
                       Gov. Markell and other leaders –

Business Wire

NEWARK, Del. -- April 26, 2013

Joined by government and industry leaders, the University of Delaware and NRG
Energy (NYSE: NRG) are celebrating an important milestone for its eV2g project
today: becoming an official resource of PJM Interconnection and proving for
the first time that electric vehicle-to-grid technology can sell electricity
from electric vehicles (EVs) to the power grid.

Delaware Governor Jack Markell, senior officials from the, U.S. Department of
Energy and the state will be among those at a UD event held today to mark the
achievements.

"Moving innovative ideas out of the classroom and into the marketplace is
critical to growing our economy," said Governor Jack Markell. “The partnership
between NRG and University of Delaware perfectly illustrates the potential for
research institutions to spur economic development."

The University and NRG began work in September 2011 to move from research
results to prepare to commercialize the technology, which provides a two-way
interface between EVs and the power grid that enables vehicle owners to sell
electricity back to the grid while they are charging their EVs. On Feb. 27,
the project took a big step forward when it became an official participant in
the PJM’s frequency regulation market. Frequency regulations is used to
balance supply and demand on the grid second-by-second. Since then, the
project has been selling power services from a fleet of EVs to PJM, whose
territory has 60 million people in the 13 mid-Atlantic states.

“This demonstrates that EVs can provide both mobility and stationary power
while helping making the grid more resilient and ultimately generating revenue
for electric vehicle owners,” said NRG Executive Vice President Denise Wilson,
who leads the company’s emerging businesses. “The advancement also proves the
power of partnerships such as these to accelerate the development of clean
energy technologies that will deliver for the economy, consumers, security and
sustainability.”

University of Delaware President Patrick Harker echoed Wilson’s praise of
partnerships.

"Partnerships have been essential to the success of this initiative," said
Harker. "I thank all of the industry and policy leaders who have come together
around a project that incorporates clean transportation, stable energy and
profitable sustainability. And I thank Prof. Willett Kempton and his
fellowscientists for leading the way. It might be a few more years before a
grid-integrated vehicle sits in every American driveway, but I'm excited to
continue the journey."

A key aspect of the technology is that it can aggregate power from multiple
electric vehicles to create one larger power resource, rather than individual,
smaller ones. Additional company partnerships that make up the entire system
shown today include BMW AG providing the EVs, Milbank Manufacturing providing
charging stations based on UD technology, AutoPort Inc. installing UD control
technology into the EVs and others.

For grid operators, the technology serves as an innovative new approach to
energy storage. It has the potential to balance the power provided by
intermittent renewable resources such as wind and solar. Energy storage, such
as large-scale batteries or those in a fleet of vehicles, can take the wind’s
power generated at night and store it to use when demand is higher.

“PJM changed rules for participation in the regulation service market to
decrease the minimum amount of power needed to participate and we implemented
new rules that recognize and compensate faster, more accurately responding
resources, such as batteries,” said Michael J. Kormos, senior vice president
of PJM Operations. “We knew that by doing so would attract innovation and
would find potential for energy storage or other technologies. We’re glad to
be a part of this project and hope that this inspires continued innovation
among our partners and others in the industry.”

The technology is expected to initially help managers of commercial EV fleets
by providing revenue while the vehicles are parked, with individual EV owners
to eventually follow. The system is currently in development with restricted
test fleets and is not now a commercial offering.

Besides being one of the country’s largest and most diverse power generators,
NRG is innovating to make clean energy more accessible. This includes work to
deploy large-scale renewable projects, smart meters and other demand-side
management technologies, and EVs through its eVgo network of charging
stations. The University of Delaware has strong clean energy research and
development programs and industry partnerships in solar energy, wind energy,
fuel cells biofuels and electric vehicles.

About NRG

NRG is at the forefront of changing how people think about and use energy. We
deliver cleaner and smarter energy choices for our customers, backed by the
nation’s largest independent power generation portfolio of fossil fuel,
nuclear, solar and wind facilities. A Fortune 300 company, NRG is challenging
the U.S. energy industry by becoming the largest developer of solar power,
building the first privately-funded electric vehicle charging infrastructure,
and providing customers with the most advanced smart energy solutions to
better manage their energy use. In addition to 47,000 megawatts of generation
capacity, enough to supply nearly 40 million homes, our retail electricity
providers – Reliant,Green Mountain Energyand Energy Plus – serve more than
two million customers. More information is available atwww.nrgenergy.com.
Connect withNRG EnergyonFacebookand follow us on Twitter @nrgenergy.

NRG Safe Harbor Disclosure

This news release contains forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934. Such forward-looking statements are subject to certain
risks, uncertainties and assumptions and include NRG’s expectations regarding
the Company’s eV2g project and forward-looking statements typically can be
identified by the use of words such as “will,” “expect,” “believe,” and
similar terms. Although NRG believes that its expectations are reasonable, it
can give no assurance that these expectations will prove to have been correct,
and actual results may vary materially. Factors that could cause actual
results to differ materially from those contemplated above include, among
others, general economic conditions, hazards customary in the power industry,
competition in wholesale power markets, the volatility of energy and fuel
prices, failure of customers to perform under contracts, changes in the
wholesale power markets, changes in government regulation of markets and of
environmental emissions, and our ability to achieve the expected benefits and
timing of our vehicle-to-grid projects. NRG undertakes no obligation to update
or revise any forward-looking statements, whether as a result of new
information, future events or otherwise. The foregoing review of factors that
could cause NRG’s actual results to differ materially from those contemplated
in the forward-looking statements included in this news release should be
considered in connection with information regarding risks and uncertainties
that may affect NRG’s future results included in NRG’s filings with the
Securities and Exchange Commission at www.sec.gov.

About University of Delaware

Tracing its heritage back to 1743, the University of Delaware is a
state-assisted, privately controlled institution with an enrollment of more
than 16,000 undergraduates, 3,500 graduate students and 1,000 professional and
continuing education students. The University offers degrees in a broad range
of disciplines across seven colleges and is a land-grant, sea-grant and
space-grant institution. The University is classified by the Carnegie
Foundation for the Advancement of Teaching as a research university with very
high research activity – a designation accorded to fewer than 3 percent of
U.S. colleges and universities. For more information, visit www.udel.edu.

About PJM

PJM Interconnection, founded in 1927, ensures the reliability of the
high-voltage electric power system serving 60 million people in all or parts
of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey,
North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the
District of Columbia. PJM coordinates and directs the operation of the
region’s transmission grid, which includes 59,750 miles of transmission lines;
administers a competitive wholesale electricity market; and plans regional
transmission expansion improvements to maintain grid reliability and relieve
congestion. Visit PJM at www.pjm.com.

Contact:

NRG:
Karen Cleeve, 609-524-4608
Karen.cleeve@nrgenergy.com
or
University of Delaware:
Meredith Chapman, 302-690-1316
mchapman@udel.edu
or
PJM Interconnection:
Paula DuPont-Kidd, 866-756-6397
duponp@pjm.com