Ivanpah Solar Electric Generating System Reaches ‘First Sync’ Milestone

  Ivanpah Solar Electric Generating System Reaches ‘First Sync’ Milestone

  — Testing confirms operational readiness of world’s largest solar thermal
                                  project —

Business Wire

NIPTON, Calif. -- September 24, 2013

NRG Energy, Inc. (NYSE:NRG), through its wholly owned subsidiary NRG Solar,
today announced that the Ivanpah Solar Electric Generating System produced its
first output of energy when the Unit 1 station was synced to the power grid
for the first time. Achieving this critical “first sync” is a major milestone
for the project.

Ivanpah First Sync (Photo: Business Wire)

Ivanpah First Sync (Photo: Business Wire)

This successful test demonstrates the effectiveness of the station’s power
tower technology, which includes large heliostats that track the sun
throughout the day, solar field integration software and a solar receiver
steam generator.

“Given the magnitude and complexity of Ivanpah, it was very important that we
successfully complete this milestone showing all systems were on track,” said
Tom Doyle, President of NRG Solar. “We couldn’t be more excited about
achieving ‘first sync,’ and we share this success with our project partners,
BrightSource and Google, as well as Bechtel, which is responsible for
engineering, procurement, construction and commissioning on the project.”

Power generated from Ivanpah’s initial sync testing will go to Pacific Gas and
Electric (PG&E), which has a power purchase agreement (PPA) for energy
produced out of the plant’s Unit 1 station. Power generated from Ivanpah’s
Unit 3 station is also sold under a PPA with PG&E, while Unit 2 is under a PPA
with Southern California Edison. Proof-of-concept testing will also be
conducted at Unit 2 and 3 in the coming months.

“This is yet another major milestone that we have successfully achieved as
Ivanpah approaches completion,” said David Ramm, Executive Chairman of
BrightSource Energy, Inc. “Ivanpah is the showcase project for BrightSource’s
power tower technology and technical expertise. Validation at this scale
demonstrates the viability of our technology as BrightSource increases focus
on international markets and applications for concentrating solar power.”

“The achievement of this major milestone was possible through the tireless
efforts of the entire project team – from the craft to the field engineers and
technical experts,” said Toby Seay, President of Bechtel’s power global
business unit. “With the cooperation of Ivanpah’s owners, we have been able to
bring to life a world-class solar project that will help California meet its
renewable energy goals safely and effectively.”

“At Google we invest in renewable energy projects that have the potential to
transform the energy landscape. Ivanpah is one of those projects,” said Rick
Needham, Director of Energy and Sustainability at Google. “We’re excited about
the project achieving this first sync – a landmark event along the path to
completion. Congratulations to the many people who have worked so hard to get
this far.”

Located in California’s Mojave Desert, Ivanpah is the largest solar thermal
plant in the world, spanning 3,500 acres of public land. Once fully
operational, the 392 megawatt (377 megawatt net) plant will generate enough
electricity to power 140,000 homes annually. Ivanpah’s three power tower units
will also nearly double the amount of commercial solar thermal energy capacity
now operating in the United States.

The Ivanpah Solar Electric Generating System is one of several NRG assets that
are subject to a Right of First Offer Agreement between NRG Energy Inc., and
the newly-created NRG Yield, Inc. (NYSE: NYLD).

About NRG and NRG Solar

NRG is leading a customer-driven change in the U.S. energy industry by
delivering cleaner and smarter energy choices, while building on the strength
of the nation’s largest and most diverse competitive power portfolio. A
Fortune 500 company, we create value through reliable and efficient
conventional generation while driving innovation in solar and renewable power,
electric vehicle ecosystems, carbon capture technology and customer-centric
energy solutions. Our retail electricity providers – Reliant, Green Mountain
Energy and NRG Residential Solutions – serve millions of residential and
commercial customers throughout the country. More information is available at
www.nrgenergy.com. Connect with NRG Energy on Facebook and follow us on
Twitter @nrgenergy.

NRG, through its subsidiaries including NRG Solar LLC, has more than 2,000 MW
of photovoltaic and solar thermal projects in operation, under construction or
in development across the southwestern United States. More information is
available at www.nrgsolar.com. Connect with NRG Solar on Facebook and follow
us on Twitter @nrgsolar.

About BrightSource Energy, Inc.

BrightSource Energy, Inc. provides the world’s premier solar field technology
for concentrating solar power systems to deliver reliable clean energy to
utilities and industrial companies. For more information on BrightSource
Energy please visit www.BrightSourceEnergy.com.

About Google Inc.

Google is a global technology leader focused on improving the ways people
connect with information. Google’s innovations in web search and advertising
have made its website a top internet property and its brand one of the most
recognized in the world.

About Bechtel

Bechtel is among the most respected engineering, project management, and
construction companies in the world. We stand apart for our ability to get the
job done right—no matter how big, how complex, or how remote. Bechtel operates
through five global business units that specialize in civil infrastructure;
power generation, communications, and transmission; mining and metals; oil,
gas, and chemicals; and government services. Since its founding in 1898,
Bechtel has worked on more than 22,000 projects in 140 countries on all seven
continents. Today, our 53,000 employees team with customers, partners, and
suppliers on diverse projects in nearly 50 countries. For more information
about Bechtel visit www.bechtel.com.

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 Ivanpah solar 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 solar 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.

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Contact:

NRG
Media:
Jeff Holland, 760-710-3828
or
Investors:
Chad Plotkin, 609-524-4526