Composite Technology Announces Transmission Lines in England

IRVINE, California, June 28, 2011 -

- ACCC® Conductor
Chosen by National Grid UK

Composite Technology Corporation (CTC) (OTC Bulletin Board:
CPTCQ) is pleased to announce that its subsidiary, CTC Cable
Corporation, has received an order for 45 kilometers of ACCC®
London conductor to be installed on the high voltage transmission
network in the UK.  Following an extensive and rigorous
program of testing undertaken by Electricity Alliance West, the
ACCC® London conductor has been awarded type registration by
National Grid, the owner and operator of the high voltage
transmission network in England and Wales, for this conductor to be
installed on two lines in National Grid’s network.  This is
the second line using ACCC conductor in the UK.

The first line, of approximately one kilometer, was successfully
installed with twin bundle conductors near Sheffield, England, in
mid-March. The first line is not energized since the installation
was undertaken to allow the National Grid linesmen to become
familiar with the conductor and how to install it. The second line,
for approximately seven kilometers of twin bundle conductor, is the
order that has now been received and is expected to be installed
and energized on National Grid’s 400kV network later this year.

Stewart Ramsay, President of CTC Cable Corporation commented,
“We are very pleased to have successfully completed the rigorous
testing program required by National Grid for new conductor types
and for ACCC® London conductor to have become the first composite
core conductor to be installed on the National Grid UK network. We
are grateful for the hard work and professionalism shown by the
personnel from Electricity Alliance West throughout the testing
program and will continue to work with both National Grid and
Electricity Alliance West to ensure the successful installation of
these lines and to meet the needs of the National Grid network for
higher capacity and greater efficiency in the future.”

About National Grid:

National Grid is an international electricity and gas company
and one of the largest investor-owned energy companies in the
world. We play a vital role in delivering gas and electricity to
millions of people across Great Britain and northeastern US in an
efficient, reliable and safe manner. We believe the power of action
can play a major role in safeguarding our global environment for
future generations and tackling the effects of climate change,
providing all our customers with the highest standards of service
through network investment and through our talented, diverse
workforce. National Grid owns the high-voltage electricity
transmission network in England and Wales and operates the system
across Great Britain. It also owns and operates the high pressure
gas transmission system in Britain and its distribution business
delivers gas to 11 million homes and businesses.

About Electricity Alliance West:

Brought together in October 2006, the Electricity West Alliance
is a partnership between National Grid, AMEC, Babcock Networks and
Mott MacDonald. The Alliance was formed to deliver a major
investment programme to update and develop the high-voltage
transmission network in order to maintain safe, secure and reliable
electricity supplies across England and Wales and the Electricity
Alliance West is undertaking a programme of construction works to
ensure the safe and reliable replacement of overhead lines and
cables; including the design and delivery of new and future
schemes.

About CTC:

Composite Technology Corporation’s patented ACCC® conductor
technology enables superior performance of high voltage
transmission and distribution electrical grids. ACCC® conductors
use CTC’s proven carbon fiber core which is produced by its
subsidiary, CTC Cable Corporation, at its Irvine, California
headquarters and delivered to qualified conductor manufacturers who
produce and distribute ACCC® conductors to operators of electrical
grids worldwide. CTC’s conductor technology significantly reduces
thermal line sag and can replace similar diameter and weight
traditional conductors with its higher capacity and more energy
efficient ACCC® conductor. It is an ideal conductor for both
upgrading existing power lines as well as building new lines since
the technology allows for the reduction of the number of support
structures and/or a reduction of their height. Since its commercial
introduction in 2005, ACCC® conductor has been selected for over
10,000 kilometers (6,214 miles) of projects in all environmental
and operating conditions, including severe heat and ice
environments, long span applications and high capacity corridors
for the modern grid. ACCC® is a registered trademark of CTC Cable
Corporation.

For further information, visit our website: href="www.compositetechcorp.com/">www.compositetechcorp.com
or contact Investor Relations:  James Carswell,
+1-949-428-8500.

This press release may contain forward-looking statements, as
defined in the Securities Reform Act of 1995 (the “Reform Act”).
The safe harbor for forward-looking statements provided to
companies by the Reform Act does not apply to Composite Technology
Corporation (the “Company”). However, actual events or results may
differ from the Company’s expectations on a negative or positive
basis and are subject to a number of known and unknown risks and
uncertainties including, but not limited to, resolution of pending
and threatened litigation matters involving CTC or its
subsidiaries, resolution of disputes with CTC’s or subsidiaries’
creditors competition with larger companies, development of and
demand for a new technology, general economic conditions, the
availability of funds for capital expenditure and financing in
general by us and our customers, availability of timely financing,
cash flow, securing sufficient quantities of essential raw
materials, timely delivery by suppliers, ability to maintain
quality control, collection-related and currency risks from
international transactions, the successful outcome of joint venture
negotiations, or the Company’s ability to manage growth. Other risk
factors attributable to the Company’s business may affect the
actual results achieved by the Company, including those that are
found in the Company’s Annual Report filed with the SEC on Form
10-K for fiscal year ended September 30, 2010 and subsequent
Quarterly Reports on Form 10-Q and subsequent Current Reports filed
on Form 8-K that will be included with or prior to the filing of
the Company’s next Quarterly or Annual Report.

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